Toshiba RAS-3M18SAV-E User Manual
Displayed below is the user manual for RAS-3M18SAV-E by Toshiba which is a product in the Split-System Air Conditioners category. This manual has pages.
Related Manuals
R410A
FILE NO. SVM-15040
SERVICE MANUAL
SPLIT TYPE
Indoor Unit Outdoor Unit
<Console, Heat Pump Type> <Heat Pump Type>
RAS-B10UFV-E
1
RAS-10
N3
AV2-E
1
RAS-B13UFV-E
1
RAS-13
N3
AV2-E
1
RAS-B18UFV-E
1
RAS-18
N3
AV
2
-E
March
, 201
5
– 2 –
CONTENTS
1. SAFETY PRECAUTIONS .......................................................................... 3
2. SPECIFICATIONS ..................................................................................... 6
3. REFRIGERANT R410A ............................................................................. 9
4. CONSTRUCTION VIEWS ........................................................................ 17
5.WIRING DIAGRAM .................................................................................. 19
6.SPECIFICATIONS OF ELECTRICAL PARTS ......................................... 21
7.REFRIGERANT CYCLE DIAGRAM ........................................................ 22
8.CONTROL BLOCK DIAGRAM ................................................................ 25
9. OPERATION DESCRIPTION................................................................... 28
10.INSTALLATION PROCEDURE ................................................................ 65
11.HOW TO DIAGNOSE THE TROUBLE...................................................... 75
12.HOW TO REPLACE THE MAIN PARTS................................................. 102
13.EXPLODED VIEWS AND PARTS LIST ................................................. 126
Toshiba
SAFETY PRECAUTIONS
The important contents concerned to the safety are described on the product itself and on this Service Manual.
Please read this Service Manual after understanding the described items thoroughly in the following contents
(Indications/Illustrated marks), and keep them.
[Explanation of indications]
* Property damage : Enlarged damage concerned to property, furniture, and domestic animal/pet
[Explanation of illustrated marks]
• Read this “SAFETY PRECAUTIONS” carefully before servicing.
• The precautions described below include the important items regarding safety. Observe them without fail.
• After the servicing work, perform a trial operation to check for any problem.
• Turn off the main power supply switch (or breaker) before the unit maintenance.
Indication Explanation
DANGER Indicates contents assumed that an imminent danger causing a death or serious injury of the
repair engineers and the third parties when an incorrect work has been executed.
WARNING Indicates possibilities assumed that a danger causing a death or serious injury of the repair
engineers, the third parties, and the users due to troubles of the product after work when an
incorrect work has been executed.
CAUTION Indicates contents assumed that an injury or property damage (*) may be caused on the repair
engineers, the third parties, and the users due to troubles of the product after work when an
incorrect work has been executed.
Mark Explanation
Indicates prohibited items (Forbidden items to do)
The sentences near an illustrated mark describe the concrete prohibited contents.
Indicates mandatory items (Compulsory items to do)
The sentences near an illustrated mark describe the concrete mandatory contents.
Indicates cautions (including danger/warning)
The sentences or illustration near or in an illustrated mark describe the concrete cautious contents.
For general public use
Power supply cord of outdoor unit shall be 1.5 mm ² (H07RN-F or 60245IEC66) polychloroprene sheathed flexible
cord.
CAUTION
New Refrigerant Air Conditioner Installation
• THIS AIR CONDITIONER ADOPTS THE NEW HFC REFRIGERANT (R410A) WHICH DOES NOT DESTROY OZONE
LAYER.
R410A refrigerant is apt to be affected by impurities such as water, oxidizing membrane, and oils because the working pressure
of R410A refrigerant is approx. 1.6 times of refrigerant R22. Accompanied with the adoption of the new refrigerant, the
refrigeration machine oil has also been changed. Therefore, during installation work, be sure that water, dust, former
refrigerant, or refrigeration machine oil does not enter into the new type refrigerant R410A air conditioner circuit.
To prevent mixing of refrigerant or refrigerating machine oil, the sizes of connecting sections of charging port on main unit and
installation tools are different from those used for the conventional refrigerant units.
Accordingly, special tools are required for the new refrigerant (R410A) units. For connecting pipes, use new and clean piping
materials with high pressure fittings made for R410A only, so that water and/or dust does not enter. Moreover, do not use the
existing piping because there are some problems with pressure fittings and possible impurities in existing piping.
+00A08-010_01EN_SVM_HighWallHeatPump.book Page 5 Wednesday, March 4, 2009 11:22 AM
1. SAFETY PRECAUTIONS
–3 –
Toshiba
CAUTION
TO DISCONNECT THE APPLIANCE FROM THE MAIN POWER SUPPLY
A switch or circuit breaker that can disconnect all poles must be included in the fixed wiring.
Be sure to use an approved circuit breaker or switch.
DANGER
• ASK AN AUTHORIZED DEALER OR QUALIFIED INSTALLATION PROFESSIONAL TO INSTALL/ MAINTAIN THE AIR
CONDITIONER.
INAPPROPRIATE SERVICING MAY RESULT IN WATER LEAKAGE, ELECTRIC SHOCK OR FIRE.
• TURN OFF MAIN POWER SUPPLY BEFORE ATTEMPTING ANY ELECTRICAL WORK. MAKE SURE ALL POWER
SWITCHES ARE OFF. FAILURE TO DO SO MAY CAUSE ELECTRIC SHOCK.
HIGH VOLTAGE
The high voltage circuit is incorporated.
Be careful to do the check service, as the electric shock may be caused in case of touching parts
on the P.C. board by hand.
• CORRECTLY CONNECT THE CONNECTING CABLE. IF THE CONNECTING CABLE IS INCORRECTLY CONNECTED,
ELECTRIC PARTS MAY BE DAMAGED.
• CHECK THAT THE EARTH WIRE IS NOT BROKEN OR DISCONNECTED BEFORE SERVICE AND INSTALLATION.
FAILURE TO DO SO MAY CAUSE ELECTRIC SHOCK.
• DO NOT INSTALL NEAR CONCENTRATIONS OF COMBUSTIBLE GAS OR GAS VAPORS. FAILURE TO FOLLOW THIS
INSTRUCTION CAN RESULT IN FIRE OR EXPLOSION.
• TO PREVENT THE INDOOR UNIT FROM OVERHEATING AND CAUSING A FIRE HAZARD, PLACE THE UNIT WELL
AWAY (MORE THAN 2 M) FROM HEAT SOURCES SUCH AS RADIATORS, HEAT REGISTORS, FURNACE, STOVES,
ETC.
• WHEN MOVING THE AIR-CONDITIONER FOR INSTALLATION IN ANOTHER PLACE, BE VERY CAREFUL NOT TO
ALLOW THE SPECIFIED REFRIGERANT (R410A) TO BECOME MIXED WITH ANY OTHER GASEOUS BODY INTO THE
REFRIGERATION CIRCUIT. IF AIR OR ANY OTHER GAS IS MIXED IN THE REFRIGERANT, THE GAS PRESSURE IN
THE REFRIGERATION CIRCUIT WILL BECOME ABNORMALLY HIGH AND IT MAY RESULT IN THE PIPE BURSTING
AND POSSIBLE PERSONNEL INJURIES.
• IN THE EVENT THAT THE REFRIGERANT GAS LEAKS OUT OF THE PIPE DURING THE SERVICE WORK AND THE
INSTALLATION WORK, IMMEDIATELY LET FRESH AIR INTO THE ROOM. IF THE REFRIGERANT GAS IS HEATED,
SUCH AS BY FIRE, GENERATION OF POISONOUS GAS MAY RESULT.
WARNING
•Never modify this unit by removing any of the safety guards or bypass any of the safety interlock switches.
•Do not install in a place which cannot bear the weight of the unit. Personal injury and property damage can result
if the unit falls.
•After the installation work, confirm that refrigerant gas does not leak.
If refrigerant gas leaks into the room and flows near a fire source, such as a cooking range, noxious gas may generate.
•The electrical work must be performed by a qualified electrician in accordance with the Installation Manual. Make
sure the air conditioner uses an exclusive circuit.
An insufficient circuit capacity or inappropriate installation may cause fire.
•When wiring, use the specified cables and connect the terminals securely to prevent external forces applied to the
cable from affecting the terminals.
•Be sure to provide grounding.
Do not connect ground wires to gas pipes, water pipes, lightning rods or ground wires for telephone cables.
•Conform to the regulations of the local electric company when wiring the power supply.
Inappropriate grounding may cause electric shock.
+00A08-010_01EN_SVM_HighWallHeatPump.book Page 6 Wednesday, March 4, 2009 11:22 AM
–4 –
Toshiba
CAUTION
• Exposure of unit to water or other moisture before installation may result in an electrical short.
Do not store in a wet basement or expose to rain or water.
• Do not install in a place that can increase the vibration of the unit. Do not install in a place that can amplify the noise level
of the unit or where noise or discharged air might disturb neighbors.
• To avoid personal injury, be careful when handling parts with sharp edges.
• Perform the specified installation work to guard against an earthquake.
If the air conditioner is not installed appropriately, accidents may occur due to the falling unit.
For Reference:
If a heating operation would be continuously performed for a long time under the condition that the outdoor
temperature is 0°C or lower, drainage of defrosted water may be difficult due to freezing of the bottom plate,
resulting in a trouble of the cabinet or fan.
It is recommended to procure an antifreeze heater locally for a safe installation of the air conditioner.
For details, contact the dealer.
+00A08-010_01EN_SVM_HighWallHeatPump.book Page 7 Wednesday, March 4, 2009 11:22 AM
–5 –
2-1. S
p
ecifications
2. SPECIFICATIONS
–6 –
Unit model Indoor
Outdoor
Cooling capacity (kW)
Cooling capacity range (kW)
Heating capacity (kW)
Heating capacity range (kW)
Power supply
Electric Indoor Operation mode
characteristic Running current (A)
Power consumption (W)
Power factor (%)
Outdoor Operation mode
Running current (A)
Power consumption (W)
Power factor (%)
Starting current (A)
COP (Cooling / Heating) 4.20
Operating Indoor High (Cooling / Heating) (dB-A)
noise Medium (Cooling / Heating) (dB-A)
Low (Cooling / Heating) (dB-A)
Outdoor (Cooling / Heating) (dB-A)
Indoor unit Unit model
Dimention Height (mm)
Width (mm)
Depth (mm)
Net weight (kg)
Fan motor output (W)
Air flow rate (Cooling / Heating) (m3 / min)
Outdoor unit Unit model
Dimention Height (mm)
Width (mm)
Depth (mm)
Net weight (kg)
Compressor Motor output (W)
Type
Model
Fan motor output (W)
Air flow rate (Cooling / Heating) (m3 / min)
Piping Type
connection Indoor unit Liquid side (mm)
Gas side (mm)
Outdoor unit Liquid side (mm)
Gas side (mm)
Maximum length (m)
Maximun charge-less length (m)
Maximum height difference (m)
Refrigerant Name of refrigerant
Weight (kg)
Wiring Power supply
connection Interconnection 4 Wires:Includes earth 4 Wires:Includes earth 4 Wires:Includes earth
Usable temperature range Indoor (Cooling / Heating) (oC)
Outdoor (Cooling / Heating) (oC)
Accessory Indoor unit Installation plate
Wireless remote controller
Batteries
Toshiba New IAQ Filter
Install screw
Remote controller holder
Pan head wood screw
for Remote control holder
Insulate pipe
Installation manual
Owner's manual
Outdoor unit Drain nipple
Water-proof rubber cap
* The specification may be subject to change without notice for purpose of improvement.
8
1
2
2
1
1
1
1
1
1
2
2
2
Cooling Heating
0.20-0.19 0.24-0.22
25 30
56 57
Cooling
1
1
1
1
2
1
1
2
2
1050 1250
8
1
37.5/37.5
∅6.35
∅9.52
∅6.35
Flare connection
3 Wires:Includes earth
R410A
0.8
8
1
2
1
1
2
2
1
1
1
1
750
2
Cooling Heating
0.27-0.24 0.30-0.28
35 40
60 60
R410A
1.4
21-32/0-28
-10-46/-15-24
3 Wires:Includes earth
∅12.7
20
15
10
31.9/31.9
∅6.35
∅12.7
∅6.35
Flare connection
39
1100
DA131S1B-31FZ
43
Twin rotary type with
DC-inverter variable
speed control
RAS-18N3AV2-E
550
780
290
220
16
41
10.0/10.7
49/50
RAS-B18UFV-E1
600
700
3.01/3.21
46/46
40/40
34/34
8.49-7.78
7.54-6.91 8.19-7.50
1660 1805
98 98
Heating
5.8
1.1-6.3
1Ph/50Hz/220-240V
1Ph/60Hz/220-230V
Cooling
RAS-B18UFV-E1
RAS-18N3AV2-E
5.0
1.0-5.7
21-32/0-28
-10-46/-15-24
∅9.52
20
15
10
34
690
43
Single rotary type with
DC-inverter variable
speed control
RAS-13N3AV2-E1
550
780
290
220
16
41
8.5/9.2
48/50
RAS-B13UFV-E1
600
700
3.33-3.36
40/40
33/33
27/27
5.06-4.65
4.2
1.0-5.4
1Ph/50Hz/220-240V
1Ph/60Hz/220-230V
9798
Heating
4.86-4-47 5.78-5.52
RAS-B13UFV-E1
RAS-13N3AV2-E1
3.5
1.1-4.1
R410A
0.8
21-32/0-28
-10-46/-15-24
3 Wires:Includes earth
∅9.52
20
15
10
30/30
∅6.35
∅9.52
∅6.35
Flare connection
33
690
ASM89D16UFZ
43
Single rotary type with
DC-inverter variable
speed control
RAS-10N3AV2-E1
550
780
290
220
16
41
7.8/8.5
46/47
RAS-B10UFV-E1
600
700
4.20/4.27
39/39
32/32
26/26
54
Cooling
3.04-2.78
2.87-2.63
595
93 96
56
Heating
3.58-3.98
0.20-0.19
25
3.2
1.0-4.8
1Ph/50Hz/220-240V
1Ph/60Hz/220-230V
Cooling Heating
0.17-0.15
20
RAS-B10UFV-E1
RAS-10N3AV2-E1
2.5
1.1-3.1
ASM89D16UFZ
2-2. Combined multi-split outdoor unit
The multi-split outdoor units, which can be combined with B**UFV-E series indoor unit are as described below:
Outdoor
unit type B18UFV-E B13UFV-E B10UFV-E
2-room Multi X
outdoor unit X
3-room Multi X
outdoor unit
4-room Multi
outdoor unit
5-room Multi
outdoor unit
: Combination available
X : Combination unavailable
This service manual describes about B**UFV-E series indoor units only.
For the multi-split outdoor unit to be combined, refer to the service manual.
Outdoor unit
A06-013
A06-014
A08-016
A09-011
RAS-5M34UAV-E
A05-009-1
RAS-M18GAV-E
RAS-M14GAV-E
RAS-3M26GAV-E1,RAS-4M27GAV-E1
RAS-4M23SAV-E
RAS-3M18SAV-E
File name
Heat Pump Model
Combined outdoor unit
model name
RAS-3M18SAV-E
RAS-3M26GAV-E1
RAS-4M23SAV-E
RAS-4M27GAV-E1
Indoor unit model name
RAS-5M34UAV-E
RAS-M14GAV-E
RAS-M18GAV-E
–7 –
–8 –
2-2. Operation Characteristic Curve
<Cooling> <Heating>
2-3. Capacity Variation ratio According to Temperature.
<Cooling> <Heating>
0
1
2
3
4
5
6
7
8
9
10
015 30 45 60 75 90 105 120
Current (A)
Compressor Speed (RPS)
0
1
2
3
4
5
6
7
8
9
10
015 30 45 60 75 90 105 120
Current (A)
Compressor Speed (RPS)
RAS-B13UFV-E1
Conditions
Indoor : DB 27oC/WB 19oC
Outdoor : DB 35oC/WB 24oC
Indoor Air Flow : High
Pipe Length : 5m
Voltage : 230V
Conditions
Indoor : DB 20oC/WB 15oC
Outdoor : DB 7oC/WB 6oC
Indoor Air Flow : High
Pipe Length : 5m
Voltage : 230V
RAS-B10UFV-E1
0.0
20.0
40.0
60.0
80.0
100.0
120.0
-25 -20 -15 -10 -5 0 5 10
Heating Capacity ratio (%)
Outside Temperature ( ºC)
RAS-B10UFV-E1
RAS-B13UFV-E1
RAS-B18UFV-E1
RAS-B13UFV-E1
50.0
55.0
60.0
65.0
70.0
75.0
80.0
85.0
90.0
95.0
100.0
105.0
32 33 34 35 36 37 38 39 40 41 42 43 44 45 46
Cooling Capacity ratio (%)
Outside Temperature ( oC)
Conditions
Indoor : DB 27oC/WB 19oC
Outdoor : DB 35oC/WB 24oC
Indoor Air Flow : High
Pipe Length : 5m (10k,13k)
: 7.5m (18k)
Capacity ratio : 100 %=
2.5kW(RAS-B10UFV-E1)
3.5kW(RAS-B13UFV-E1)
5.0kW(RAS-B18UFV-E1)
RAS-B13UFV-E1
RAS-B18UFV-E1
Conditions
Indoor : DB 20oC/WB 15oC
Outdoor : DB 7oC/WB 6oC
Indoor Air Flow : High
Pipe Length : 5m (10k, 13k)
: 7.5 m (18k)
RAS-B10UFV-E1
RAS-B10UFV-E1
RAS-B18UFV-E1
RAS-B18UFV-E1
Capacity ratio : 100% =
3.2kW(RAS-B10UFV-E1)
4.2kW(RAS-B13UFV-E1)
5.8kW(RAS-B18UFV-E1)
– 9 –
3. REFRIGERANT R410A
This air conditioner adopts the new refrigerant HFC
(R410A) which does not damage the ozone layer.
The working pressure of the new refrigerant R410A
is 1.6 times higher than conventional refrigerant
(R22). The refrigerating oil is also changed in
accordance with change of refrigerant, so be careful
that water, dust, and existing refrigerant or refrigerat-
ing oil are not entered in the refrigerant cycle of the
air conditioner using the new refrigerant during
installation work or servicing time.
The next section describes the precautions for air
conditioner using the new refrigerant. Conforming to
contents of the next section together with the
general cautions included in this manual, perform
the correct and safe work.
3-1. Safety During Installation/Servicing
As R410A’s pressure is about 1.6 times higher than
that of R22, improper installation/servicing may
cause a serious trouble. By using tools and materi-
als exclusive for R410A, it is necessary to carry out
installation/servicing safely while taking the following
precautions into consideration.
1. Never use refrigerant other than R410A in an air
conditioner which is designed to operate with
R410A.
If other refrigerant than R410A is mixed, pressure
in the refrigeration cycle becomes abnormally
high, and it may cause personal injury, etc. by a
rupture.
2. Confirm the used refrigerant name, and use tools
and materials exclusive for the refrigerant R410A.
The refrigerant name R410A is indicated on the
visible place of the outdoor unit of the air condi-
tioner using R410A as refrigerant. To prevent
mischarging, the diameter of the service port
differs from that of R22.
3. If a refrigeration gas leakage occurs during
installation/servicing, be sure to ventilate fully.
If the refrigerant gas comes into contact with fire,
a poisonous gas may occur.
4. When installing or removing an air conditioner, do
not allow air or moisture to remain in the refrig-
eration cycle. Otherwise, pressure in the refrig-
eration cycle may become abnormally high so
that a rupture or personal injury may be caused.
5. After completion of installation work, check to
make sure that there is no refrigeration gas
leakage.
If the refrigerant gas leaks into the room, coming
into contact with fire in the fan-driven heater,
space heater, etc., a poisonous gas may occur.
6. When an air conditioning system charged with a
large volume of refrigerant is installed in a small
room, it is necessary to exercise care so that,
even when refrigerant leaks, its concentration
does not exceed the marginal level.
If the refrigerant gas leakage occurs and its
concentration exceeds the marginal level, an
oxygen starvation accident may result.
7. Be sure to carry out installation or removal
according to the installation manual.
Improper installation may cause refrigeration
trouble, water leakage, electric shock, fire, etc.
8. Unauthorized modifications to the air conditioner
may be dangerous. If a breakdown occurs
please call a qualified air conditioner technician
or electrician.
Improper repair’s may result in water leakage,
electric shock and fire, etc.
3-2. Refrigerant Piping Installation
3-2-1. Piping Materials and Joints Used
For the refrigerant piping installation, copper pipes
and joints are mainly used. Copper pipes and joints
suitable for the refrigerant must be chosen and
installed. Furthermore, it is necessary to use clean
copper pipes and joints whose interior surfaces are
less affected by contaminants.
1. Copper Pipes
It is necessary to use seamless copper pipes
which are made of either copper or copper alloy
and it is desirable that the amount of residual oil
is less than 40 mg/10 m. Do not use copper
pipes having a collapsed, deformed or discolored
portion (especially on the interior surface).
Otherwise, the expansion valve or capillary tube
may become blocked with contaminants.
As an air conditioner using R410A incurs pres-
sure higher than when using R22, it is necessary
to choose adequate materials.
Thicknesses of copper pipes used with R410A
are as shown in Table 3-2-1. Never use copper
pipes thinner than 0.8 mm even when it is
available on the market.
– 10 –
Ta ble 3-2-1 Thicknesses of annealed copper pipes
Nominal diameter
1/4
3/8
1/2
5/8
Outer diameter (mm)
6.35
9.52
12.70
15.88
Thickness (mm)
R410A R22
0.80 0.80
0.80 0.80
0.80 0.80
1.00 1.00
2. Joints
For copper pipes, flare joints or socket joints are used. Prior to use, be sure to remove all contaminants.
a) Flare Joints
Flare joints used to connect the copper pipes cannot be used for pipings whose outer diameter exceeds
20 mm. In such a case, socket joints can be used.
Sizes of flare pipe ends, flare joint ends and flare nuts are as shown in Tables 3-2-3 to 3-2-6 below.
b) Socket Joints
Socket joints are such that they are brazed for connections, and used mainly for thick pipings whose
diameter is larger than 20 mm.
Thicknesses of socket joints are as shown in Table 3-2-2.
Ta ble 3-2-2 Minimum thic knesses of socket joints
Nominal diameter
1/4
3/8
1/2
5/8
Reference outer diameter of
copper pipe jointed (mm)
6.35
9.52
12.70
15.88
Minim um joint thickness
(mm)
0.50
0.60
0.70
0.80
3-2-2. Processing of Piping Materials
When performing the refrigerant piping installation, care should be taken to ensure that water or dust does not
enter the pipe interior, that no other oil than lubricating oils used in the installed air-water heat pump is used,
and that refrigerant does not leak. When using lubricating oils in the piping processing, use such lubricating oils
whose water content has been removed. When stored, be sure to seal the container with an airtight cap or any
other cover.
1. Flare processing procedures and precautions
a) Cutting the Pipe
By means of a pipe cutter, slowly cut the pipe so that it is not deformed.
b) Removing Burrs and Chips
If the flared section has chips or burrs, refrigerant leakage may occur.
Carefully remove all burrs and clean the cut surface before installation.
c) Insertion of Flare Nut
– 11 –
A
ØD
d) Flare Processing
Make certain that a clamp bar and copper
pipe have been cleaned.
By means of the clamp bar, perform the flare
processing correctly.
Use either a flare tool for R410A or conven-
tional flare tool.
Flare processing dimensions differ according
to the type of flare tool. When using a con-
ventional flare tool, be sure to secure “dimen-
sion A” by using a gauge for size adjustment. Fig. 3-2-1 Flare processing dimensions
Table 3-2-3 Dimensions related to flare processing for R410A
Nominal
diameter
1/4
3/8
1/2
5/8
Outer
diameter
(mm)
6.35
9.52
12.70
15.88
Thickness
(mm)
0.8
0.8
0.8
1.0
A (mm)
Flare tool for R410A
c lutc h type
0 to 0.5
0 to 0.5
0 to 0.5
0 to 0.5
Conventional flare tool
Clutch type Wing nut type
1.0 to 1.5 1.5 to 2.0
1.0 to 1.5 1.5 to 2.0
1.0 to 1.5 2.0 to 2.5
1.0 to 1.5 2.0 to 2.5
Table 3-2-4 Dimensions related to flare processing for R22
Nominal
diameter
1/4
3/8
1/2
5/8
Outer
diameter
(mm)
6.35
9.52
12.70
15.88
Thickness
(mm)
0.8
0.8
0.8
1.0
A (mm)
Flare tool f or R22
c lutc h type
0 to 0.5
0 to 0.5
0 to 0.5
0 to 0.5
Conventional flare tool
Clutch type Wing nut type
0.5 to 1.0 1.0 to 1.5
0.5 to 1.0 1.0 to 1.5
0.5 to 1.0 1.5 to 2.0
0.5 to 1.0 1.5 to 2.0
Table 3-2-5 Flare and flare nut dimensions for R410A
Nominal
diameter
1/4
3/8
1/2
5/8
Outer diameter
(mm)
6.35
9.52
12.70
15.88
Thickness
(mm)
0.8
0.8
0.8
1.0
Dimension (mm)
ABCD
9.1 9.2 6.5 13
13.2 13.5 9.7 20
16.6 16.0 12.9 23
19.7 19.0 16.0 25
Flare nut width
(mm)
17
22
26
29
– 12 –
43 to 45
45 to 46
B A CD
Table 3-2-6 Flare and flare nut dimensions for R22
Nominal
diameter
1/4
3/8
1/2
5/8
3/4
Outer diameter
(mm)
6.35
9.52
12.70
15.88
19.05
Thickness
(mm)
0.8
0.8
0.8
1.0
1.0
Dimension (mm)
ABCD
9.0 9.2 6.5 13
13.0 13.5 9.7 20
16.2 16.0 12.9 20
19.7 19.0 16.0 23
23.3 24.0 19.2 34
Flare nut width
(mm)
17
22
24
27
36
Fig. 3-2-2 Relations between flare nut and flare seal surface
2. Flare Connecting Procedures and Precautions
a) Make sure that the flare and union portions do not have any scar or dust, etc.
b) Correctly align the processed flare surface with the union axis.
c) Tighten the flare with designated torque by means of a torque wrench. The tightening torque for R410A is
the same as that for conventional R22. Incidentally, when the torque is weak, the gas leakage may occur.
When it is strong, the flare nut may crack and may be made non-removable. When choosing the tighten-
ing torque, comply with values designated by manufacturers. Table 3-2-7 shows reference values.
NOTE :
When applying oil to the flare surface, be sure to use oil designated by the manufacturer.
If any other oil is used, the lubricating oils may deteriorate and cause the compressor to burn out.
Table 3-2-7 Tightening torque of flare for R410A [Reference values]
Nominal
diameter
1/4
3/8
1/2
5/8
Outer diameter
(mm)
6.35
9.52
12.70
15.88
Tightening tor que
N•m (kgf•cm)
14 to 18 (140 to 180)
33 to 42 (330 to 420)
50 to 62 (500 to 620)
63 to 77 (630 to 770)
Tightening torque of torque
wrenches a vailable on the market
N•m (kgf•cm)
16 (160), 18 (180)
42 (420)
55 (550)
65 (650)
– 13 –
3-3. Tools
3-3-1. Required T ools
The service port diameter of packed valve of the outdoor unit in the air-water heat pump using R410A is
changed to prevent mixing of other refrigerant. To reinforce the pressure-resisting strength, flare processing
dimensions and opposite side dimension of flare nut (For Ø12.7 copper pipe) of the refrigerant piping are
lengthened.
The used refrigerating oil is changed, and mixing of oil may cause a trouble such as generation of sludge,
clogging of capillary, etc. Accordingly, the tools to be used are classified into the following three types.
1. Tools exclusive for R410A (Those which cannot be used for conventional refrigerant (R22))
2. Tools exclusive for R410A, but can be also used for conventional refrigerant (R22)
3. Tools commonly used for R410A and for conventional refrigerant (R22)
The table below shows the tools exclusive for R410A and their interchangeability.
Tools exclusive for R410A (The following tools for R410A are required.)
Tools whose specifications are changed for R410A and their interchangeability
No.
1
2
3
4
5
6
7
8
9
10
Used tool
Flare tool
Copper pipe gauge for
adjusting projection
margin
Torque wrench
(For Ø12.7)
Gauge manifold
Charge hose
Vacuum pump adapter
Electronic balance for
refrigerant charging
Refrigerant cylinder
Leakage detector
Charging cylinder
Usage
Pipe flaring
Flaring by
conventional flare tool
Connection of flare nut
Evacuating, refrigerant
charge, run check, etc.
Vacuum evacuating
Refrigerant charge
Refrigerant charge
Gas leakage check
Refrigerant charge
R410A
air-water heat pump installation
Existence of
new equipment
for R410A
Ye s
Ye s
Ye s
Ye s
Ye s
Ye s
Ye s
Ye s
*(Note 2)
Whether conven-
tional equipment
can be used
*(Note 1)
*(Note 1)
Conventional air-water
heat pump installation
Whether new equipment
can be used with
conventional refrigerant
*(Note 1)
(Note 1) When flaring is carried out for R410A using the conventional flare tools, adjustment of projection
margin is necessary. For this adjustment, a copper pipe gauge, etc. are necessary.
(Note 2) Charging cylinder for R410A is being currently developed.
General tools (Conventional tools can be used.)
In addition to the above exclusive tools, the following equipments which serve also for R22 are necessary
as the general tools.
1. Vacuum pump
Use vacuum pump by attaching
vacuum pump adapter.
2. Torque wrench (For Ø6.35, Ø9.52)
3. Pipe cutter
4. Reamer
5. Pipe bender
6. Level vial
7. Screwdriver (+, –)
8. Spanner or Monkey wrench
9. Hole core drill (Ø65)
10. Hexagon wrench
(Opposite side 4mm)
11. Tape measure
12. Metal saw
Also prepare the following equipments for other installation method and run check.
1. Clamp meter
2. Thermometer
3. Insulation resistance tester
4. Electroscope
Ye s
No
No
Ye s
Ye s
No
No
Ye s
No
No
No
Ye s
No
No
No
–14 –
Connect the charge hose to packed valve service
port at the outdoor unit’s gas side.
Recover the refrigerant, and check no refrigerant
remains in the equipment.
(For refrigerant charging, see the figure below.)
Connect the charge hose to the vacuum pump
adapter.
Open fully both packed valves at liquid and gas
sides.
Place the handle of the gauge manifold Low in the
fully opened position, and turn on the vacuum pump’s
power switch. Then, evacuating the refrigerant in the
cycle.
When the compound gauge’s pointer has indicated
–0.1 Mpa (–76 cmHg), place the handle Low in the
fully closed position, and turn off the vacuum pump’s
power switch.
Keep the status as it is for 1 to 2 minutes, and ensure
that the compound gauge’s pointer does not return.
Set the refrigerant cylinder to the electronic balance,
connect the connecting hose to the cylinder and the
connecting port of the electronic balance, and charge
liquid refrigerant.
3-4. Recharging of Refrigerant
When it is necessary to recharge refrigerant, charge the specified amount of new refrigerant according to the
following steps.
(Indoor unit) (Outdoor unit)
Opened
Opened
Refrigerant cylinder
(with siphon)
Check valve
Opened
Open/close
valve for charging
Electronic balance for refrigerant charging
Closed
Service port
1. Never charge refrigerant exceeding the specified amount.
2. If the specified amount of refrigerant cannot be charged, charge refrigerant bit by bit in COOL mode.
3. Do not carry out additional charging.
When additional charging is carried out if refrigerant leaks, the refrigerant composition changes in the
refrigeration cycle, that is characteristics of the air conditioner changes, refrigerant exceeding the
specified amount is charged, and working pressure in the refrigeration cycle becomes abnormally high
pressure, and may cause a rupture or personal injury.
Fig. 3-4-1 Configuration of refrigerant charging
– 15 –
NOTE :
REQUIREMENT :
NOTE :
Gauge manifold
[ Cylinder with siphon ] [ Cylinder without siphon ]
OUTDOOR unit
Gauge manifold
OUTDOOR unit
Refrigerant
cylinder
Electronic
balance
Refrigerant
cylinder
Electronic
balance
Siphon
1. Be sure to make setting so that liquid can be charged.
2. When using a cylinder equipped with a siphon, liquid can be charged without turning it upside down.
It is necessary for charging refrigerant under condition of liquid because R410A is mixed type of refrigerant.
Accordingly, when charging refrigerant from the refrigerant cylinder to the equipment, charge it turning the
cylinder upside down if cylinder is not equipped with siphon.
R410A refrigerant is HFC mixed refrigerant.
Therefore, if it is charged with gas, the composi-
tion of the charged refrigerant changes and the
characteristics of the equipment varies.
3-5. Brazing of Pipes
3-5-1. Materials for Brazing
1. Silver brazing filler
Silver brazing filler is an alloy mainly composed
of silver and copper. It is used to join iron, copper
or copper alloy, and is relatively expensive though
it excels in solderability.
2. Phosphor bronze brazing filler
Phosphor bronze brazing filler is generally used
to join copper or copper alloy.
3. Low temperature brazing filler
Low temperature brazing filler is generally called
solder, and is an alloy of tin and lead. Since it is
weak in adhesive strength, do not use it for
refrigerant pipes.
1. Phosphor bronze brazing filler tends to react
with sulfur and produce a fragile compound
water solution, which may cause a gas
leakage. Therefore, use any other type of
brazing filler at a hot spring resort, etc., and
coat the surface with a paint.
2. When performing brazing again at time of
servicing, use the same type of brazing filler.
3-5-2. Flux
1. Reason why flux is necessary
•By removing the oxide film and any foreign
matter on the metal surface, it assists the flow
of brazing filler.
•In the brazing process, it prevents the metal
surface from being oxidized.
•By reducing the brazing filler’s surface tension,
the brazing filler adheres better to the treated
metal.
Fig. 3-4-2
–16 –
Nitrogen gas
cylinder
Pipe
Flow meter
M
Stop valve
From Nitrogen cylinder
Nitrogen
gas
Rubber plug
2. Characteristics required for flux
•Activated temperature of flux coincides with the
brazing temperature.
•Due to a wide effective temperature range, flux
is hard to carbonize.
•It is easy to remove slag after brazing.
•The corrosive action to the treated metal and
brazing filler is minimum.
•It excels in coating performance and is harm-
less to the human body.
As the flux works in a complicated manner as
described above, it is necessary to select an
adequate type of flux according to the type and
shape of treated metal, type of brazing filler and
brazing method, etc.
3. Types of flux
•Noncorrosive flux
Generally, it is a compound of borax and boric
acid.
It is effective in case where the brazing tem-
perature is higher than 800°C.
•Activated flux
Most of fluxes generally used for silver brazing
are this type.
It features an increased oxide film removing
capability due to the addition of compounds
such as potassium fluoride, potassium chloride
and sodium fluoride to the borax-boric acid
compound.
4. Piping materials for brazing and used
brazing filler/flux
1. Do not enter flux into the refrigeration cycle.
2. When chlorine contained in the flux remains
within the pipe, the lubricating oil deteriorates.
Therefore, use a flux which does not contain
chlorine.
3. When adding water to the flux, use water
which does not contain chlorine (e.g. distilled
water or ion-exchange water).
4. Remove the flux after brazing.
3-5-3. Brazing
As brazing work requires sophisticated techniques,
experiences based upon a theoretical knowledge, it
must be performed by a person qualified.
In order to prevent the oxide film from occurring in
the pipe interior during brazing, it is effective to
proceed with brazing while letting dry Nitrogen gas
(N2) flow.
Never use gas other than Nitrogen gas.
1. Brazing method to prevent oxidation
1) Attach a reducing valve and a flow-meter to
the Nitrogen gas cylinder.
2) Use a copper pipe to direct the piping mate-
rial, and attach a flow-meter to the cylinder.
3) Apply a seal onto the clearance between the
piping material and inserted copper pipe for
Nitrogen in order to prevent backflow of the
Nitrogen gas.
4) When the Nitrogen gas is flowing, be sure to
keep the piping end open.
5) Adjust the flow rate of Nitrogen gas so that it
is lower than 0.05 m3/Hr or 0.02 MPa
(0.2kgf/cm2) by means of the reducing valve.
6) After performing the steps above, keep the
Nitrogen gas flowing until the pipe cools down
to a certain extent (temperature at which
pipes are touchable with hands).
7) Remove the flux completely after brazing.
Fig. 3-5-1 Prevention of oxidation during brazing
Piping material
Copper - Copper
Copper - Iron
Iron - Iron
Used brazing filler
Phosphor copper
Silver
Silver
Used flux
Do not use
Paste flux
Vapor flux
NOTE :
CAUTION
–17 –
Indoor Unit
RAS-B10UFV-E1
RAS-B13UFV-E1
RAS-B18UFV-E1
4-1.
–18 –
320
306
80
Z View
600
A detail Drawing (Back leg)
320
306
Ø
25 Drain outlet 11 x 14 Hole
(For 8 - 10 anchor bolt)
B Detail Drawing (Front leg)
FAN-GUARD
COVER-PV
Liquid side
(Flare 6.35)
Ø
: Flare
∅
9.52)
Gas side
(10k,13k
Service port
2 -
∅
11 x 14 Long holes (For
∅
8-
∅
10 anchor bolt)
Installation dimension
Air outlel
100 or more
100 or more
600 or more
600 or more
Air intlel
Ø
ØØ
Ø6 hole
86
Ø6 hole
Ø11x14 hole
R
15
28
A
320
R5.5
36
108 125
50
137
92
54
600
320
9060090
275
290
550
Ø436
Z
R15
50
36
-
2
320
342
69
2 - R5-5 x 17L Ushape
(For ∅8 - ∅10 anchor bolt)
4-2. Outdoor Unit
RAS-10SAV2-E
RAS-13SAV2-E
: Flare
∅
12.70)
(18k
–19 –
5. WIRING DIAGRAM
5-1. RAS-B10UFV-E1 / RAS-10N3AV2-E1, RAS-B13UFV-E1 / RAS-13N3AV2-E1
CN62
CN63
6
DB01
ORN
3
21 NL
F01
FUSE
25A
P03
C07
ABSORBER
SURGE
5
4
3
2
1
CM
COMPRESSOR
33BLK
WHI
RED
1
2
1
2
P09
P10
P11
6
2
2
TD
TEMP. SENSOR)
(DISCHARGE PIPE
TEMP. SENSOR)
(OUTDOOR
TO
1
3
1
1
3
2
1
TEMP. SENSOR)
(SUCTION PIPE
TS
3
1
2
1
3
PMV
5
4
3
2
1
IPM module
VARISTOR
COIL
FOR
4WAY
VALVE
F02
FUSE
3.15A
(From Main Line)
C08
ORG
YEL : YELLOW
BLU : BLUE
WHI : WHITE
ORG : ORANGE
GRN & YEL :
GREEN & YELLOW
BLK : BLACK
RED : RED
Color indication
POWER SUPPLY
(From outdoor unit)
1∅ 220-240~ ,50Hz
1∅ 220-230~ ,60Hz
44
55
1
2
3
2
1
3
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
6
7
8
9
10
11
12
13
14
15
16
17
18
20
4
5
2
1
3
4
5
2
1
3
4
5
2
1
3
4
5
2
1
3
4
5
2
1
3
4
5
2
1
3
4
5
2
1
3
4
5
2
1
3
13
13 8
12 11 10 9 8
12 11 10 9
5
67
567
4
4
123
12
3
4
4
5
5
6
6
7
7
1
1
2 3 10 9 8
4
4
5
5
67
1
1
2
2
3
3
CN212
1432
HA
(WHI)
1
21
1
2
1
2
1
2
1
2
1
2
1
2
1
22
5
5
6
6
34 1
34 1
32 1
Wireless Unit
Assembly
WP-021
CN381
(WHI)
CN301
(WHI)
CN201
(WHI)
CN261
(WHI) CN401
(RED)
CN51
(WHI)
CN604
(WHI)
CN601
(WHI)
CN603
(YEL)
CN602
(BLU)
CN21
Main P.C Board
MCC-5068A
Power Supply Circuit
DC5V
DC12V
+
Fuse F01
T3.15A
250VAC
CN501 CN03 CN01
456112
~
-+
~
CN801
R01
Varistor
Line
Filter
Thermo Sensor
(TA)
Heat Exchanger Sensor
(TCJ)
Heat Exchanger Sensor
(TC)
Indoor Terminal Block
RED
WHI
BLK
Heat
Exchanger
Fan Motor Base
GRN&YEL
GRN&YEL SHEET
METAL
BLK
WHI
YEL
YEL
YEL
YEL
WHI
YEL
YEL
YEL
YEL
RED
BLU
BLU
BLU
BLU
BLU
ORG
ORG
BLU
BLU
WHI
45 233
DC MOTOR
Fan Motor
BLU
YEL
WHI
BLK
RED
Stepper motor
(Vertical air flow louver)
Stepper motor
(Damper)
RED
BLK
BLK
BLK
BLK
BLK
BLK
DC29V
5-2. RAS-B18UFV-E1 / RAS-18N3AV2-E
–20 –
13
13 8
12 11 10 9 8
12 11 10 9
5
6
7
567
4
4
123
123
4
4
5
5
6
6
7
7
1
1
2310 9 8
4
4
5
5
67
1
1
2
2
3
3
CN212
1342
HA
(WHI)
1
12
1
2
1
2
1
2
1
2
1
2
1
2
1
22
5
5
6
6
43 1
43 1
Wireless Unit
Assembly
WP-021
CN381
(WHI)
CN301
(WHI)
CN201
(WHI)
CN261
(WHI) CN401
(RED)
CN51
(WHI)
CN604
(WHI)
CN601
(WHI)
CN603
(YEL)
CN602
(BLU)
CN21
Main P.C Board
MCC-5068A
Power Supply Circuit
DC5V
DC12V
+
Fuse F01
T3.15A
250VAC
CN501 CN03 CN01
465
123
~
-+
~
CN801
R01
Varistor
Line
Filter
Thermo Sensor
(TA)
Heat Exchanger Sensor
(TCJ)
Heat Exchanger Sensor
(TC)
Indoor Terminal Block
Fan Motor Base
GRN&YEL SHEET
METAL
BLK
WHI
YEL
YEL
YEL
YEL
WHI
YEL
YEL
YEL
YEL
RED
BLU
BLU
BLU
BLU
BLU
ORG
ORG
BLU
BLU
WHI
45 321
DC MOTOR
Fan Motor
32 1 Heat
Exchanger
GRN&YEL
RED
WHI
BLK
BLU
YEL
WHI
BLK
RED
Stepper motor
(Vertical air flow louver)
Stepper motor
(Damper)
RED
BLK
BLK
BLK
BLK
BLK
BLK
DC29V
ORG
YEL : YELLOW
BLU : BLUE
WHI : WHITE
ORG : ORANGE
GRN & YEL :
GREEN & YELLOW
BLK : BLACK
RED : RED
Color indication
POWER SUPPLY
(From outdoor unit)
1∅ 220-240~ ,50Hz
1∅ 220-230~ ,60Hz
44
55
1
2
3
2
1
3
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
6
7
8
9
10
11
12
13
14
15
16
17
18
20
4
5
2
1
3
4
5
2
1
3
4
5
2
1
3
4
5
2
1
3
4
5
2
1
3
4
5
2
1
3
4
5
2
1
3
4
5
2
1
3
No.Parts name Mode l name Rating
RAS-10N3AV2-E1, RAS-13N3AV2-E1 CH-69-Z-T L = 19mH, 10A
1Reactor
RAS-18N3AV2-ECH-57-Z-T L = 10mH, 16A
2 Outdoor fan motor ICF-140-43-4R DC140V, 43W
3 Suction temp. sensor (TS sensor) (Inverter attached) 10k (25°C)
4 Discharge temp. sensor (TD sensor) (Inverter attached) 62k (20°C)
5 Outside air temp. sensor (TO sensor) (Inverter attached) 10k (25°C)
6 Heat exchanger temp. sensor (TE sensor) (Inverter attached) 10k (25°C)
7 Terminal block (5P) AC250V, 20A
RAS-10N3AV2-E1, RAS-13N3AV2-E1 ASM89D16UFZ 3-phases 4-poles 750W
8
Compressor RAS-18N3AV2-EDA131S1B-31FZ 3-phases 4-poles 1100W
9 Coil for PMV CAM-MD12TCTH-5 DC12V
10 RAS-10N3AV2-E1, RAS-13N3AV2-E1 SQ-A2522G-000352 AC220-240V
RAS-18N3AV2-ESTF-01AJ646A1 AC220-240V
Coil for
4-way valve
–21 −
6. SPECIFICATIONS OF ELECTRICAL PARTS
6-1. Indoor Unit
6-2. Outdoor Unit
No.
Fan motor (for indoor)
2 Room temp. sensor (TA-sensor) 10kΩ at 25°C
3 Heat exchanger temp. sensor (TC-sensor) 10kΩ at 25°C
5
Louver
motor
Output (Rated), 16 poles, DC12V
( - )
(
-
)
MP24Z3N
ICF-340-41-1 DC340, 41W
Parts name
1
Specif icat ionsType
6 Dumper motor Output (Rated), 16 poles, DC12V
MP24Z3N
4 10kΩ at 25°C
(
-
)
Heat exchanger temp. sensor (TCJ-sensor)
JX0-5B
7. REFRIGERANT CYCLE DIAGRAM
–22 –
7-1. Refrigerant Cycle Diagram
RAS-B10UFV-E1 / RAS-10N3AV2-E1
RAS-B13UFV-E1 / RAS-13N3AV2-E1
NOTE :
•
Deoxidized copper pipe
Outer dia. : 9.52mm
Thickness : 0.8mm
NOTE : Gas leak check position
Refrigerant flow (Cooling)
Refrigerant flow (Heating)
T1
TO
Temp. measurement
TC
TA
INDOOR UNIT
Indoor heat
exchanger
Cross flow fan
Deoxidized copper pipe
Outer dia. : 6.35mm
Thickness : 0.8mm
Sectional shape
of heat insulator
Allowable height
difference : 10m
Allowable pipe length
P
Pressure measurement
Gauge attaching port
Vacuum pump connecting port
Strainer
Pulse Modulating
valve at liquid side
TD
4-way valve
Compressor
ASM89D16UFZ
TS
T2
Outdoor heat
exchanger
Temp. measurement
Refrigerant amount : 0.80kg
Propeller fan
OUTDOOR UNIT
Muffler
Muffler
TE
Max. : 20m
Min. : 2m
Chargeless : 15m
Strainer
Charge : 20g/m
(16 to 20m)
The maximum pipe length of this air conditioner is 20 m. When the pipe length exceeds 15m, the additional
charging of refrigerant, 20g per 1m for the part of pipe exceeded 15m is required. (Max. 100g)
NOTE :
• The maximum pipe length of this air conditioner is 20m. When the pipe length exceeds 15m, the additional
charging of refrigerant, 20g per 1m for the part of pipe exceeded 15m is required. (Max. 100g)
Max. : 20m
Min. : 2m
Chargeless : 15m
Charge : 20g/m
(16 to 20m)
Deoxidized copper pipe
Outer dia. : 12.7mm
Thickness : 0.8mm
NOTE:
Gas leak check position
Refrigerant flow (Cooling)
Refrigerant flow (Heating)
INDOOR UNIT
T1 Temp. measurement
Indoor heat
exchanger
Turbo fan
Sectional shape
of heat insulator
Allowable height
difference: 10m
Allowable pipe length
P
Pressure measurement
Gauge attaching port
Vacuum pump connecting port
Strainer
Pulse Modulating valve
at liquid side
(CAM-B22YGTF-3)
4-way valve
(STF-0108Z)
TD
Compressor
DA131S1B-31FZ
Propeller fan Refrigerant amount: 1.40kg
OUTDOOR UNIT
TC
TA
Outdoor heat
exchanger
Split capillary
2-dia. 1.2 × 80
TE
Muffler
Muffler
Accumulater tank
Deoxidized copper pipe
Outer dia. : 6.35mm
Thickness : 0.8mm
TS
TO
Distributor
T2
Temp. measurement
–23 –
7-2. Refrigerant Cycle Diagram
RAS-B18UFV-E1 / RAS-18N3AV2-E
–24 –
7-2. Operation Data
<Cooling>
<Heating>
Tempeature Model name Standard Heat exchanger Indoor Outdoor Compressor
condition(°C) RAS- pressure pipe temp. fan mode fan mode revolution
Indoor Outdoor P (MPa) T1 (°C) T2 (°C) (rps)
27/19 35/- B10UFV-E1 0.9 to 1.1 12 to 14 41 to 43 High High 49
B13UFV-E1 0.8 to 1.0 10 to 12 39 to 41 High High 74
B18UFV-E1 0.8 to 1.0 8 to 10 37 to 39 High High 77
Tempeature Model name Standard Heat exchanger Indoor Outdoor Compressor
condition(°C) RAS- pressure pipe temp. fan mode fan mode revolution
Indoor Outdoor P (MPa) T1 (°C) T2 (°C) (rps)
20/- 7/6 B10UFV-E1 2.1 to 2.3 37 to 39 2 to 4 High High 62
B13UFV-E1 2.4 to 2.6 41 to 43 1 to 3 High High 84
B18UFV-E1 2.9 to 3.0 49 to 51 1 to 3 High High 75
NOTES :
1. Measure surface temperature of heat exchanger pipe around center of heat exchanger path U bent.
(Thermistor themometer)
2. Connecting piping condition : 5 m (10k, 13k) and 7.5 m (18k)
–25 –
8. CONTROL BLOCK DIAGRAM
8-1. Indoor Unit
M.C.U. Indoor Unit Control Unit
Serial Signal Communication
(Operation Command and Information)
Serial Signal Transmitter/Receiver
Converter
(D.C circuit)
Noise Filter
Indoor
Fan Motor
Louver
Motor
Louver Motor
Drive Control
Indoor Fan
Motor Control
Initializing Circuit
Clock Frequency
Oscillator Circuit
Power Supply
Circuit
Infrared Rays, 36.7kHz
Fan Speed Selection
ON TIMER Setting
OFF TIMER Setting
Louver AUTO Swing
Louver Direction Setting
REMOTE CONTROL
FLOOR (ON/OFF)
ECO
Heat Exchanger Sensor (TC)
Room Temperature Sensor (TA)
Infrared Rays Signal Receiver
and Indication
Functions
•Cold draft preventing Function
•3-minute Delay at Restart for Compressor
•Fan Motor Starting Control
•Processing
(Temperature Processing)
•
Timer / Weekly Timer
•Serial Signal Communication
•Clean Function
Heat Exchanger Sensor (TCJ)
Power Supply
From Outdoor Unit
Damper
Drive Control
Damper
Motor
•
Power Selection
8°C
Hi-POWER
COMPORT SLEEP
Remote Control
Operation (START/STOP)
Operation Mode Selection
∗
∗
∗
POWER-SEL
Weekly ON / OFF
Note (∗) : Optional for remote control model WH-TA02EE only
AUTO, COOL, DRY, HEAT, FAN ONLY
Thermo. Setting
–26 –
8-2. Outdoor Unit (Inverter Assembly)
220–240V ~50Hz
MICRO-COMPUTER BLOCK DIAGRAM
Driver circuit
of P.M.V.
Heat exchanger
temp.sensor
Suction temp.
sensor
Outdoor air
temp. sensor
Discharge
temp. sensor
Indoor unit
send/receive
circuit
Relay
circuit
Noise
Filter
Converter
(AC → DC)
Clock
frequency
10MHz
High Power
factor Correction
circuit
Input current
sensor
• PWM synthesis function
• Input current release control
•
IPM over-current detect control
• Outdoor fan control
• High power factor correction control
• Inverter output frequency control
• A/D converter function
• P.M.V. control
• Discharge temp. control
• 4-way valve control
• Signal communication to indoor unit
P.M.V. : Pulse Motor Valve
M.C.U. : Micro Control Unit
M.C.U
For INDOOR UNIT
4-way
valve
P.M.V.
Inverter
(DC → AC)
Gate drive
circuit
Gate drive
circuit
Inverter
(DC → AC)
Outdoor
Fan motor
Compressor
WP-030 (P.C.B) OUTDOOR UNIT
Current
detect
Current
detect
220
−
230V ~60Hz
RAS-10N3AV2-E1
RAS-13N3AV2-E1
–27 –
220–240V~ 50Hz
MICRO-COMPUTER BLOCK DIAGRAM
Driver circuit
of P.M.V.
Heat exchanger
temp.sensor
Suction temp.
sensor
Outdoor air
temp. sensor
Discharge
temp. sensor
Indoor unit
send/receive
circuit
Relay
circuit
Noise
Filter
Converter
(AC → DC)
Clock
frequency
4MHz
High Power
factor Correction
circuit
Input current
sensor
• PWM synthesis function
• Input current release control
• IGBT over-current detect control
• Outdoor fan control
• High power factor correction control
• Inverter output frequency control
• A/D converter function
• P.M.V. control
• Discharge temp. control
• 4-way valve control
• Signal communication to indoor unit
P.M.V. : Pulse Motor Valve
M.C.U. : Micro Control Unit
M.C.U
For INDOOR UNIT
4-way
valve
P.M.V.
Inverter
(DC → AC)
Gate drive
circuit
Gate drive
circuit
Inverter
(DC → AC)
Outdoor
Fan motor
Compressor
MCC5009 (P.C.B) OUTDOOR UNIT
Current
detect
Current
detect
RAS-18N3AV2-E
–28 –
.
.
.
9. OPERATION DESCRIPTION
9-1. Outline of Air Conditioner Control
This air conditioner is a capacity-variable type air
conditioner, which uses DC motor for the indoor fan
motor and the outdoor fan motor. And the capacity-
proportional control compressor which can change the
motor speed is mounted. The DC motor drive circuit
is mounted to the indoor unit. The compressor and
the inverter to control fan motor are mounted to the
outdoor unit.
The entire air conditioner is mainly controlled by the
indoor unit controller.
The indoor unit controller drives the indoor fan motor
based upon command sent from the remote controller
or indoor unit display buttons and transfers the
operation command to the outdoor unit controller.
The outdoor unit controller receives operation com-
mand from the indoor unit side, and controls the
outdoor fan and the pulse Modulating valve. (P.M.V)
Besides, detecting revolution position of the compres-
sor motor, the outdoor unit controller controls speed of
the compressor motor by controlling output voltage of
the inverter and switching timing of the supply power
(current transfer timing) so that motors drive according
to the operation command.
And then, the outdoor unit controller transfers reversely
the operating status information of the outdoor unit to
control the indoor unit controller.
2. Role of outdoor unit controller
Receiving the operation command signal (Serial
signal) from the indoor unit controller, the outdoor
unit performs its role.
•Compressor operation control
•Operation control of outdoor fan motor
•P.M.V. control
•4-way valve control
Operations followed to judgment
of serial signal from indoor side.
•Detection of inverter input current and current
release operation
•Over-current detection and prevention operation
to IGBT module (Compressor stop function)
•Compressor and outdoor fan stop function when
serial signal is off (when the serial signal does not
reach the board assembly of outdoor control by
trouble of the signal system)
•Transferring of operation information (Serial
signal) from outdoor unit controller to indoor unit
controller
•Detection of outdoor temperature and operation
revolution control
•Defrost control in heating operation (Temp.
measurement by outdoor heat exchanger and
control for 4-way valve and outdoor fan)
3. Contents of operation command signal
(Serial signal) from indoor unit controller to
outdoor unit controller
The following three types of signals are sent from
the indoor unit controller.
•Operation mode set on the remote controller
•Compressor revolution command signal defined
by indoor temperature and set temperature
(Correction along with variation of room tempera-
ture and correction of indoor heat exchanger
temperature are added.)
•Temperature of indoor heat exchanger
•For these signals ([Operation mode] and [Com-
pressor revolution] indoor heat exchanger tem-
perature), the outdoor unit controller monitors the
input current to the inverter, and performs the
followed operation within the range that current
does not exceed the allowable value.
4. Contents of operation command signal
(Serial signal) from outdoor unit controller
to indoor unit controller
The following signals are sent from the outdoor unit
controller.
•The current operation mode
•The current compressor revolution
•Outdoor temperature
•Existence of protective circuit operation
For transferring of these signals, the indoor unit
controller monitors the contents of signals, and
judges existence of trouble occurrence.
Contents of judgment are described below.
•Whether distinction of the current operation
status meets to the operation command signal
•Whether protective circuit operates
When no signal is received from the outdoor
unit controller, it is assumed as a trouble.
As the compressor adopts four-pole brushless
DC motor, the frequency of the supply power
from inverter to compressor is two-times cycles
of the actual number of revolution.
1. Role of indoor unit controller
The indoor unit controller judges the operation
commands from the remote control or indoor unit
display buttons, and assumesthe following functions.
•Judgment of suction air temperature of the indoor
heat exchanger by using the indoor temp. sensor.
(TA sensor)
•Judgment of the indoor heat exchanger tempera-
ture by using heat exchanger sensor (TC sensor)
(Prevent-freezing control, etc.)
•Louver motor control
•Indoor fan motor operation control
•LED (Light Emitting Diode) display control
•Transferring of operation command signal (Serial
signal) to the outdoor unit
•Reception of information of operation status
(Serial signal including outside temp. data) to the
outdoor unit and judgment/display of error
NOTE :
–29 −
9-2. Operation Description
1. Basic operation ........................................................................................................... 30
1. Operation control ................................................................................................... 30
2. Cooling/Heating operation ..................................................................................... 31
3.AUTO operation ......................................................................................................31
4. DRY operation........................................................................................................ 32
2. Indoor fan motor control ............................................................................................. 33
3. Outdoor fan motor control........................................................................................... 36
4. Capacity control .......................................................................................................... 38
5. Current release control ............................................................................................... 38
6. Release protective control by temperature of indoor heat exchanger........................ 39
7. Defrost control (Only in heating operation) ................................................................ 40
8. Air outlet selection ...................................................................................................... 41
9. Lower air outlet louve control ...................................................................................... 42
10. Upper air outlet louver control .................................................................................... 43
11. ECO operation ........................................................................................................... 44
13. Discharge temperature control ................................................................................... 45
14. Pulse Modulating valve (P.M.V.) control ...................................................................... 46
15. Self-Cleaning function ................................................................................................. 47
16. Selt-Cleaning function release .................................................................................... 48
17. Remote-A or B selection ............................................................................................ 49
9-3. Auto Restart Function ................................................................................................55
9-3-1. How to Set the A uto Restart Function .............................. ........................................ 55
9-3-2. How to Cancel the Au to Restar t Function ................................................................. 56
9-3-3. Power Failure During Timer Operation .................................................................... 56
23.FILTER Indicator ...............................................................................................51
9-4. Remote Control ....................................................................................................... 57
9-4-1. Remote control and its functions ................................................................................. 57
9-4-2. Operation of remote control ...................................................................................... 57
18. QUIET mode ............................................................................................................. 50
19. COMFORT SLEEP ................................................................................................... 50
20. Short Timer ................................................................................................................ 50
21. One-Touch Comfort .................................................................................................. 51
22. Hi-POWER Mode ...................................................................................................... 51
9-4-3. Name and Functions of Indications on Remote Contr oller ........................................ 63
25. Outdoor Quiet control ................................................................................................. 53
24. Set temp. correction .................................................................................................. 52
9-5. Indoor Unit Display & Unit Operation Panel .........................................................64
12. Test operation ............................................................................................................ 45
–30 –
Item
1. Basic
operation
Operation flow and applicable data, etc.
1. Operation control
Description
Receiving the user’s operation condition setup, the operation statuses of indoor/outdoor units are
controlled.
1) The operation conditions are selected by the remote controller or indoor unit display buttons as
shown in the bolow.
2) A signal is sent by ON button of the remote controller.
3) The signal is received by a sensor of the indoor unit and processed by the indoor controllers as
shown in the below.
4) The indoor controller controls the indoor fan motor and louver motor.
5) The indoor controller sends the operation command to the outdoor controller, and sends/receives
the control status with a serial signal.
6) The outdoor controller controls the operation as shown in the left, and also controls the compres-
sor, outdoor fan motor, 4-way valve and pulse Modulating valve.
Indoor unit
Indoor unit control
• Command signal generating function of
indoor unit operation
• Calculation function (temperature calculation)
• Activation compensation function of indoor fan
• Cold draft preventive function
• Timer function
• Indoor heat exchanger release control
• Indoor fan motor
• Louver motor
Outdoor unit
Outdoor unit control
• Frequency control of inverter output
• Waveform composite function
• Calculation function
(Temperature calculation)
• AD conversion function
• Quick heating function
• Delay function of compressor reactivation
• Current release function
• GTr over-current preventive function
• Defrost operation function
• Compressor
• Outdoor fan motor
• 4-way valve
• Pulse Modulating valve
(P.M.V.)
Signal receiving
Indoor unit control
Operation command
Serial signal send/receive
Serial signal send/receive
Outdoor unit control
Inverter
~
Remote controller
Control contents of remote controller
• ON/OFF
• Operation select (COOL/HEAT/AUTO/DRY)
• Temperature setup
• Air direction
• Swing
• Air volume select
• ECO
• ON timer setup
• OFF timer setup
• Hi-POWER
Selection of
operation conditions
ON/OFF
(AUTO/LOW/LOW+/MED/MED+/HIGH)
• COMFORT SLEEP
• QUIET
• PRESET
• ONE-TOUCH
• FLOOR
Selecton
of
operation
conditions
Control contents of
unit display buttons
• ON/OFF
• Operation select
(AUTO/COOL/HEAT)
• Temperature setup
• Air outlet select
(AUTO/Upper/Lower
Indoor unit display buttons
− 31−
Operation ON Setup of remote controller
Indoor fan motor control / Louver control / Operation Hz
Control (Requierment)
Indoor unit control
Sending of operation command signal
Outdoor unit control
[ ]
Compressor revolution control / Outdoor fan motor control /
4-way valve control In cooling operation: ON
In heating operation: OFF
Pulse Modulating valve control
Item
1. Basic
operation
Operation flow and applicable data, etc.
2. Cooling/Heating operation
Description
The operations are performed in the following parts by controls according to cooling/heating conditions.
1) Receiving the operation ON signal of the remote controller, the cooling or heating operation signal
starts being transferred form the indoor controller to the outdoor unit.
2) At the indoor unit side, the indoor fan is operated according to the contents of “2. Indoor fan
motor control” and the louver according to the contents of “9. Louver control”, respectively.
3) The outdoor unit controls the outdoor fan motor, compressor, pulse Modulating valve and
4-way valve according to the operation signal sent from the indoor unit.
3. AUTO operation
Selection of operation mode
As shown in the following figure, the operation starts by
selecting automatically the status of room temperature
(TA) when starting AUTO operation.
*1. When reselecting the operation mode, the fan
speed is controlled by the previous operation mode.
1) Detects the room temperature (TA) when
the operation started.
2) Selects an operation mode from TA in
the left figure.
3) Fan operation continues until an
operation mode is selected.
4) When AUTO operation has started
within 2 hours after heating operation
stopped and if the room temperature is
20°C or more, the fan operation is
performed with ”Super Ultra LOW” mode
for 3 minutes.
Then, select an operation mode.
5) If the status of compressor-OFF
continues for 15 minutes the room
temperature after selecting an operation
mode (COOL/HEAT), reselect an
operation mode.
Ts + 1
Ts – 1
Ta
Cooling operation
Monitoring (Fan)
Heating operation
Operation Hz control (Include limit control)
1. Basic
operation
Operation flow and applicable data, etc. Description
Item
4. DRY operation
DRY operation is performed according to the
difference between room temperature and the setup
temperature as shown below.
In DRY operation, fan speed is controlled in order to
prevent lowering of the room temperature.
1) Detects the room temperature (TA) when
the DRY operation started.
2) Starts operation under conditions in the
left figure according to the temperature
difference between the room tempera-
ture and the setup temperature (Tsc).
Setup temperature (Tsc)
= Set temperature on remote controller
(Ts) + (-1.0 to 0.0)
3) When the room temperature is lower
2°C or less than the setup temperature,
turn off the compressor.
4) The time correction is performed every
8 minutes.
Fan Time
TA speed correction
(°C)
12 35 37 49 W8
11 32 34 42 W6
10 30 31 36
9272830
8252624
7222318
6202011
5W5
4W4
3
2
1 −1 zone
OFF OFF OFF (min 1)
+1 zone
±0
0
Compressor speed (rps)
B10UFV-E1 B13UFV-E1 B18UFV-E1
Zone
+4.5
+4.0
+3.5
+3.0
+2.5
+2.0
+1.5
+1.0
+0.5
0.0
−1.0
−1.5
−2.0
−0.5
− 32 −
– 33 –
Item
2. Indoor fan
motor control
Operation flow and applicable data, etc.
<In cooling operation>
(This operation controls the fan speed at indoor unit side.)
The indoor fan (cross flow fan) is operated by the phase-
control induction motor. The fan rotates in 5 stages in
MANUAL mode, and in 5 stages in AUTO mode, respec-
tively. (Table 1)
Description
* Symbols
UH : Ultra High
H : High
M+ : Medium+
M : Medium
L+ : Low+
L: Low
L- : Low–
UL : Ultra Low
SUL : Super Ultra Low
* The fan speed broadly varies due
to position of the louver, etc.
The described value indicates one
under condition of inclining
downward blowing.
1) When setting the fan speed to L,
L+, M, M+ or H on the remote
controller, the operation is
performed with the constant
speed shown in Fig. 1.
2) When setting the fan speed to
AUTO on the remote controller,
revolution of the fan motor is
controlled to the fan speed level
shown in Fig. 2 and Table 1
according to the setup tempera-
ture, room temperature, and heat
exchanger temperature.
(Fig. 1)
(Fig. 2)
L
L+
M
M+
H
W7
(L + M) / 2
WA
(M + H) / 2
WD
Indication
Fan speed
Fan speed setup
COOL ON
AUTO
+2.5
TA-Tsc
[°C]
+2.0
+1.5
+1.0
+0.5
Tsc
a
b
c
d
e
M+(WC)
*3
*4
*5
L(W7)
MANUAL
*3 : Fan speed = (M + −L) x 3/4 + L
*4 : Fan speed = (M + −L) x 2/4 + L
*5 : Fan speed = (M + −L) x 1/4 + L
(Linear appro ximation
from M+ and L)
Hi Power
Fan speed
H+(WD)
*6
*7
*8
L+(W8)
*6 : Fan speed = (H −L+) x 3/4 + L+
*7 : Fan speed = (H −L+) x 2/4 + L+
*8 : Fan speed = (H −L+) x 1/4 + L+
(Linear appro ximation
from H and L+)
Hi-POWER
W8
(L + M) / 2
WC
(M + H) / 2
WE
Fan speed
level Fan speed Air flow rate Fan speed Air flow rate Fan speed Air flow rate
(rpm) (m3/h) (rpm) (m3/h) (rpm) (m3/h)
WF 530 498 560 528 650 624
WE UH 530 498 560 528 650 624
WD H 500 468 540 510 630 600
WC M+ 450 414 490 459 560 528
WB 450 414490 459 560 528
WA M 400 366 440 408 500 468
W9 360 324 390 354 450 414
W8 L+ 350 315 390 354 450 414
W7 L 300 258 340 300 400 366
W6 L−260 216 270 228 360 324
W5 UL 260 216 270 228 340 300
W4 240 198 250 210 320 282
W3 SUL 240 198 240 198 300 258
W2 240 198 240 198 300 258
W1 240 198 240 198 300 258
RAS-B13UFV-E1RAS-B18UFV-E1
Cool RAS-B10UFV-E1
(table 1) Indoor fan air flow rate <Cooling>
– 34 –
Item
2. Indoor fan
motor control
Operation flow and applicable data, etc.
<In heating operation>
Description
1) When setting the fan speed to L,
L+, M, M+ or H on the remote
controller, the operation is per-
formed with the constant speed
shown in Fig. 3 and Table 1.
2) When setting the fan speed to
AUTO on the remote controller,
revolution of the fan motor is
controlled to the fan speed level
shown in Fig. 5 according to the set
temperature and room temperature.
3) Min air flow rate is controlled by
temperature of the indoor heat
exchanger (TC) as shown in Fig. 4.
4) Cold draft prevention, the fan
speed is controlled by temperature
of the indoor heat exchanger (TC)
as shown in Fig. 6.
(Fig. 3)
(Fig. 4) Cold draft preventive control
(Fig. 6)
* No limitation while fan speed MANUAL mode is in stability.
* A: When Tsc ≥ 24, A is 24, and when Tsc < 24, A is Tsc
Tsc: Set value
H (WE)
Line-approximate
M+and SUL with TC.
SUL (W2)
Stop
46 46
TC
34
45 45 33
33 33 21
32 32 20
*A+4 *A+4 *A+4
*A-4 *A-4 *A-4
Fan speed MANUAL in starting
Fan speed AUTO in stability
Fan speed AUTO in starting
Fan speed setup
HEAT ON
AUTO
YES
NO
MANUAL
TC ≥ 42 C Min air flow rate control
Tc
52
51
42
41
Limited to Min WD tap
* Fan speed =
(TC –– W8) + W8
No limit
*
Fan speed
Basic fan control
TSC b
- 0.5 c
- 1.0 d
- 1.5 e
- 2.0 f
- 2.5 g
- 5.0
L+ (W9)
*1
*2
*3
M+(WD)
*1: Fan speed = (M + −L+) x 1/5 + L+
*2: Fan speed = (M + −L+) x 2/5 + L+
*3: Fan speed = (M + −L+) x 3/5 + L+
*4: Fan speed = (M + −L+) x 4/5 + L+
(Calculated with linear approximation from M+ and L+)
TA-Tsc [°C] Hi Power
*4
H(WE)
M(W8)
*5
*6
*7
*8
- 5.5
*5: Fan speed = (H −M) x 1/5 + M
*6: Fan speed = (H −M) x 2/5 + M
*7: Fan speed = (H −M) x 3/5 + M
*8: Fan speed = (H −M) x 4/5 + M
(Calculated with linear approximation from H and M)
L
L+
M
M+
H
W8
(L + M) / 2
WB
(M + H) / 2
WE
Indication
Fan speed Hi-POWER
W9
(L + M) / 2
WD
(M + H) / 2
WF
(Fig. 5)
(Table 2) Indoor fan air flow rate <Heating>
Fan speed
level Fan speed Air flow rate Fan speed Air flow rate Fan speed Air flow rate
(rpm) (m3/h) (rpm) (m3/h) (rpm) (m3/h)
WF UH 560 528 600 570 690 666
WE H 540 510 580 552 670 642
WD M+ 480 443 520 486 600 570
WC 440 408 470 435 570 540
WB M 430 399 460 426 520 486
WA 380 342 410 376 460 426
W9 L+ 370 334 400 366 460 426
W8 L 320 282 340 300 400 366
W7 L- 260 216 270 228 360 324
W6 260 216 270 228 340 300
W5 UL 260 216 270 228 340 300
W4 260 216 270 228 340 300
W3 260 216 270 228 340 300
W2 SUL 240 198 250 210 320 282
W1 240 198 240 198 240 198
RAS-B13UFV-E1RAS-B18UFV-E1
HEAT RAS-B10UFV-E1
–35 –
Item Operation flow and applicable data, etc. Description
[In starting and in stability]
FAN AUTO
FAN Manual
In starting
•Until 12 minutes passed after operation start
•When 12 to 25 minutes passed after operation
start and room temp. is 3°C or lower than set temp.
•Room temp. < Set temp. –4°C
In stability
•When 12 to 25 minutes passed after operation start
and room temp. is higher than (set temp. –3°C)
•When 25 minutes or more passed after operation start
•Room temp. = Set temp. –3.5°C
–36 –
Item
3. Outdoor fan
motor control
Operation flow and applicable data, etc.
The blowing air volume at the outdoor unit side is controlled.
Receiving the operation command from the controller of
indoor unit, the controller of outdoor unit controls fan speed.
* For the fan motor, a DC motor with non-stage variable
speed system is used. However, it is limited to 16 stages for
reasons of controlling.
Description
1) The operation command sent
from the remote controller is
processed by the indoor unit
controller and transferred to the
controller of the outdoor unit.
2) When strong wind blows at
outdoor side, the operation of air
conditioner continues with the
fan motor stopped.
3) Whether the fan is locked or not
is detected, and the operation of
air conditioner stops and an
alarm is displayed if the fan is
locked.
4) According to each operation
mode, by the conditions of
outdoor temperature (TO) and
compressor revolution, the speed
of the outdoor fan shown in the
table is selected.
2) Fan speed ≥ 400
when the motor stopped.
Air conditioner ON
(Remote controller)
YES
YES
NO
NO
Indoor unit controller
Fan motor ON
3) Fan lock
OFF status of
fan motor continues.
4) Motor operates as shown in the table below.
1) Outdoor unit
operation command
(Outdoor fan control)
Air conditioner
OFF
Alarm
display
Compressor speed (rps)
TO > 38°C
TO > 28°C
TO TO >
15°C
TO > 5.5°C
TO > 0°C
During TO > 38°C
ECO mode TO < 38°C
~ 13.8 ~ 31.7
32.3 ~ MAX
MIN MAX MIN MAX MIN MAX
f 2 f 3 f A f C f D f F
f 2 f 3 f 7 f A f 9 f C
f 1 f 3 f 2 f 5 f 4 f 7
f 1 f 1 f 1 f 2 f 2 f 4
f 2 f 3 f B f C f C f D
In cooling operation Compressor speed (rps)
TO > 15°C
TO TO < 15°C
TO < 5.5°C
TO < − 5.0°C
TO >
15°C
During TO < 15°C
ECO mode TO < 5.5°C
TO < − 5.5°C
When TO is abnormal
~16.8 ~47.9
48.5 ~ MAX
f 3 f 8 f 9
f 3 f 9 f A
f 8 f A f D
f B f C f D
f 3 f 3 f 6
f 3 f 3 f 8
f 5 f 9 f 9
f 7 f A f B
f A f B f D
In heating operation
f 2 f 3 f C f D f E f F
TO < 0°C f 0 f 0 f 0 f 1 f 1 f 2
f D f F f D f F f F
f 2 f 3 f 2 f 3 f B f C
f D
When TO is abnormal
10N3A2-E1, 13N3AV2-E1
–37 –
Item Operation flow and applicable data, etc. Description
Outdoor fan speed (rpm)
Tap
f 1
f 2
f 3
f 4
f 5
f 6
f 7
f 8
18N3AV2-E
200 200 230
300 300 300
370 370 350
440 440 410
440 440 480
500 500 500
550 550 530
600 600 560
Tap
f 9
f A
f B
f C
f D
f E
f F
600 650 640
600 700
650 700
700 800 800
700 800 800
700 800 800
700 800 800
f 0 0 0 0
10N3AV2-E1 13N3AV2-E1
700
700
18N3AV2-E
10N3AV2-E1 13N3AV2-E1
18N3AV2-E
Tap
f 1
f 2
f 3
f 4
f 5
f 6
f 7
f 8
18SAV-E
200 200 230
300 300 300
370 370 350
440 440 410
440 440 480
500 500 500
550 550 530
600 600 560
Tap
f 9
f A
f B
f C
f D
f E
f F
600 650 640
600 700
650 700
700 800 800
700 800 800
700 800 800
700 800 800
f 0 0 0 0
10SAV2-E 13SAV2-E
700
700
18SAV-E
10SAV2-E 13SAV2-E
18SAV2-E
230
300
350
410
480
500
530
560
0640
800
800
800
800
700
700
18SAV2-E
< 30.5 < 55.1 55.1≤
MIN MAX MIN MAX MIN MAX TO ≥ 10°C f 6 f 8 f 9
TO ≥ 38°C f 6 f 9 f 8 f B f A f E TO TO < 10°C f 9 f A f C
TO ≥ 28°C f 5 f 9 f 7 f B f 9 f E TO < 5.0° f A f B f D
TO TO ≥ 15°C f 3f 7f 5f 9f 7f B TO < − 5.0°C
f A f B f D
TO ≥ 5.0°C f 1f 3f 1f 7f 3f 9 TO ≥ 10°C f 5 f 7 f 9
TO ≥ 0°C f 1 f 3 f 1 f 5 f 3 f 7 During TO < 10°C f 7 f 9 f B
TO < 0°C f 0 f 1 f 0 f 3 f 1 f 4 ECO mode TO < 5.0°C
f 9 f A f B
TO ≥ 38°C f 6 f 9 f 8 f B f A f B TO < −5.0°C f 9 f A f B
During ECO, TO ≥ 28°C f 5 f 9 f 7 f B f 9 f B f D f D f D
QUIET and TO ≥ 15°C f 3f 7f 5f 9f 7f B
comfort sleep TO ≥ 5.0°C f 1f 3f 1f 7f 3f 9
TO ≥ 0°C f 1f 3f 1f 5f 3f 7
TO < 0°C f 0 f 1 f 0 f 3 f 1 f 4
f 1 f F f 1 f F f 1 f F
In heating operation
Compressor speed (rps)
When TO is abnormal
When TO is abnormal
50.3 ≤
< 50.3< 22.1
In cooling operation
Compressor speed (rps)
–38 –
Item
4. Capacity
control
Operation flow and applicable data, etc.
The cooling or heating capacity depending on the load is
adjusted.
According to difference between the setup value of tempera-
ture and the room temperature, the capacity is adjusted by
the compressor revolution.
Description
1) The difference between set
temperature on remote controller
(Ts) and room temperature (TA)
is calculated.
2) According to the temperature
difference, the correction value of
Hz signal which determines the
compressor speed is set up.
3) The rotating position and speed
of the motor are detected by the
electromotive force occurred on
the motor winding with operation
of the compressor.
4) According to the difference
resulted from comparison of the
correction value of Hz signal with
the present operation Hz, the
inverter output and the commuta-
tion timing are varied.
5) Change the compressor motor
speed by outputting power to the
compressor.
* The contents of control
operation are same in cooling
operation and heating
operation
This function prevents troubles on the electronic parts of the
compressor driving inverter.
This function also controls drive circuit of the compressor
speed so that electric power of the compressor drive circuit
does not exceed the specified value.
5. Current release
control
Set temp. (Ts) Room temp. (TA)
Correction of Hz signal
Outdoor temp. TO
Setup of current release point
Capacity control continues.
Detection of electromotive force
of compressor motor winding
Detection of motor speed and rotor position
Inverter output change
Commutation timing change
Change of compressor speed
Remote controller Indoor unit
Ts –TA
Correction value of Hz signal ≤ Operating Hz
Outdoor unit inverter main
circuit control current
No
Yes
Reduce compressor speed
Operating current ≤
Setup value
1) The input current of the outdoor
unit is detected in the inverter
section of the outdoor unit.
2) According to the detected
outdoor temperature, the
specified value of the current is
selected.
3) Whether the current value
exceeds the specified value or
not is judged.
4) If the current value exceeds the
specified value, this function
reduces the compressor speed
and controls speed up to the
closest one commanded from the
indoor unit within the range
which does not exceed the
specified value.
Outdoor temp. Cooling current release value Heating current release value
10N3AV2-E1 13N3AV2-E1
45ºC
40ºC
16ºC
11ºC
5.1A
5.7A
4.5A
5.1A
5.7A
7.3A
7.2A8.77A
7.2A
6.7A
6.07A
7.12A
8.47A
9.2A
9.2A
8.6A
10N3AV2-E1 13N3AV2-E1
44ºC
39ºC
15.5ºC
10.5ºC
18N3AV2-E 18N3AV2-E
–39 –
Item
6. Release protective
control by tempera-
ture of indoor heat
exchanger
Operation flow and applicable data, etc.
<In cooling/dry operation>
(Prevent-freezing control for indoor heat exchanger)
In cooling/dry operation, the sensor of indoor heat
exchanger detects evaporation temperature and
controls the compressor speed so that temperature of
the heat exchanger does not exceed the specified
value.
Description
1) When temperature of the indoor
heat exchanger drops below 5°C,
the compressor speed is
reduced. (P zone)
2) When temperature of the indoor
heat exchanger rises in the
range from 6°C to under 7°C, the
compressor speed is kept.
(Q zone)
3) When temperature of the indoor
heat exchanger rises to 7°C or
higher, the capacity control
operation returns to the usual
control in cooling operation.
(R zone)
1) When temperature of the indoor
heat exchanger rises in the
range from 50°C to 55°C, the
compressor speed is kept.
(Q zone)
When temperature of the indoor
heat exchanger drops in the
range from 46°C to under 55°C,
the compressor speed is kept.
(Q zone)
2) When temperature of the indoor
heat exchanger rises to 55°C or
higher, the compressor speed is
reduced. (P zone)
3) When temperature of the indoor
heat exchanger does not rise to
50°C, or when it drops below to
46°C, the capacity control
operation returns to the usual
control in heating operation.
(R zone)
<In heating operation>
(Prevent-overpressure control for refrigerating cycle)
In heating operation, the sensor of indoor heat ex-
changer detects condensation temperature and controls
the compressor speed so that temperature of the heat
exchanger does not exceed the specified value.
7 C
6 C
5 C
R
Q
P
55 C
52 C
48 C
P
Q
R
Usual cooling capacity control
Reduction of compressor speed
Indoor heat exchanger temperature
When the value is
in Q zone, the
compressor speed
is kept.
Reduction of compressor speed
Usual heating capacity control
Indoor heat exchanger temperature
When the value is
in Q zone, the
compressor speed
is kept.
–40 –
Item Operation flow and applicable data, etc. Description
7. Defrost control
(Only in heating
operation)
(This function removes frost adhered to the outdoor
heat exchanger.)
The temperature sensor of the outdoor heat ex-
changer (TE sensor) judges the frosting status of the
outdoor heat exchanger and the defrost operation is
performed with 4-way valve reverse defrost system.
The necessity of defrost operation is
detected by the outdoor heat exchanger
temperature. The conditions to detect the
necessity of defrost operation differ in A,
B, or C zone each. (Table 1)
<Defrost operation>
•Defrost operation in A to C zones
1) Stop operation of the compressor for
20 seconds.
2) Invert (ON) 4-way valve 10 seconds
after stop of the compressor.
3) The outdoor fan stops at the same time
when the compressor stops.
4) When temperature of the indoor heat
exchanger becomes 38°C or lower,
stop the indoor fan.
<Finish of defrost operation>
•Returning conditions from defrost
operation to heating operation
1) Temperature of outdoor heat exchanger
rises to +8°C or higher.
2) Temperature of outdoor heat exchanger
is kept at +5°C or higher for 80 seconds.
3) Defrost operation continues for
15 minutes.
<Returning fr om defrost operation>
1) Stop operation of the compressor for
approx. 50 seconds.
2) Invert (OFF) 4-way valve approx. 40
seconds after stop of the compressor.
3) The outdoor fan starts rotating at the
same time when the compressor starts.
Table 1
* The minimum value of Te sensor 10 to 15 minutes
after start of operation is stored in memory as Te0.
0' 10' 15' 27' 40" 34'
Operation time
(Minute)
Start of heating operation
*
Outdoor heat exchanger temperature
C zone
A zone
B zone
Te0 detection time
29' 35'
......18N3AV2-E
......13N3AV2-E1
−5°C
18N3AV2-E 10N3AV2-E1
13N3AV2-E1
−7°C
−20°C
−3°C
−7°C
−26°C
A zone
B zone
C zone
When Te0 - TE = 2.5 continued for 2 minutes in A zone,
defrost operation starts.
When the operation continued for 2 minutes in B zone,
defrost operation starts.
When Te0 - TE = 3 continued for 2 minutes in C zone,
defrost operation starts.
......10N3AV2-E1
Item
8. Air outlet
Operation flow and applicable data,etc Description
selection < How to change air outlet selection >
1. Operate the air conditioner and select cooling or heating
mode.
(Air outlet selection can't be changed at standby mode.)
• In Cooling operation, only lower-flow
can't be selected.
2. Push AIR OUTLET SELECT button on the unit operation
panel to change air outlet selection.
1. Purpose
2. Description
• In Dry mode operation,bi-flow and
lower-flow can't be selected.
• In heating operation and bi-flow
setting, the air outlet is set only upper
flow for preventing cold draft when
the indoor heat exchanger sensor
temperature (TC) is lower than 33
degrees.
• In cooling operation and bi-flow
setting, the air outlet is set only upper
flow for pravinting the room from
overcooling when the room
temperature (TA) is nearing the setup
temperature.
This function can be cancelled to
AIR OUTLET SELECT button
AIR OUTLET indication
Air outlet is contorolled as below.
< How to cancell to change upper-flow at Bi-flow setting in cooling >
1. Stop operation.
2. Push and hold AIR OUTLET SELECT button on the unit
operation panel over 10seconds (less than 20seconds).
AIR OUTLET SELECT button
3. After holding 10seconds, 4 beep sounds in heard and
TEMPERATURE indicator displays "1" for 5seconds.
Release AIR OUTLET SELECT button.
− 41 −
change setting.
Item
8. Air outlet
Operation flow and applicable data,etc Description
selection < How to set to change upper-flow at Bi-flow setting in
cooling
1. Stop operation.
2. Push and hold AIR OUTLET SELECT button on the unit
operation panel over 10seconds (less than 20seconds).
AIR OUTLET SELECT button
3. After holding 10seconds, 4 beep sounds in heard and
TEMPERATURE indicator displays "1" for 5seconds.
Release AIR OUTLET SELECT button.
9. Lower air
outlet louver
< How to open or close the lower louver at standby mode >
control
1. Push AIR OUTLET SELECT button on the unit operation
panel.
AIR OUTLET SELECT button
1. Purpose
When someting is dropped to inside
of the unit from upper air outlet, this
function helps to remove something
from lower air outlet
2. When lower louver is closed, lower louver moves to open
position and TEMPERATURE indicator displays
"OP" (OPEN) during louver moving.
When lower louver is open, lower louver moves to open
plsition and TEMPERATURE indicator displays "CL"
(CLESE) during louver moving.
TMPERATURE indicator
<Close->Open> <Open->Close>
< Louver position in operation >
Lower louver is controlled in operation as below.
− 42 −
Item
10. Upper air
Operation flow and applicable data,etc Description
outlet louver Upper louver position can be arbitrarily set pu by pushing
[FIX] button of the remote control.
1. Description
The position is controlled as below.
control · Upper louver position is stored in
memory by the microcomputer, and
the louver returns to the stored
position when the next operation is
performed. (Cooling/heating memory
position)
− 43 −
–44 –
Item
11. ECO
operation
Operation flow and applicable data, etc.
When pressing [ECO] button on the remote controller, a
Economic operation is performed.
<Cooling operation>
This function operates the air conditioner with the difference
between the set and the room temperature as shown in the
following figure.
Description
<Heating operation> <Heating operation>
1) Setting the compressor speed to
Max. aHz, the temperature zone
in which the operation can be
performed with Max. cHz is
gradually widened after 30
minutes passed when starting
ECO operation.
* 12 (DRY max - COOL min) /6 x 5 + COOL min
* 11 (DRY max - COOL min) /6 x 4 + COOL min
* 10 (DRY max - COOL min) /6 x 3 + COOL min
* 9 (DRY max - COOL min) /6 x 2 + COOL min
* 8 (DRY max - COOL min) /6 x 1 + COOL min
30 minutes
A
B
C
A
B
C
→ Time Compressor
speed
0Hz
A zone
aHz
B zone
a to cHz
C zone
cHz
0
–0.5
–1.0
–1.5
–2.0
–2.5
–3.0
–4.0
–5.0
–6.0
–7.0
–8.0
–9.0
–10.0
–11.0
(Room temp. – Set temp.)
+3.5
+3.0
+2.5
+1.5
+1.0
TSC
-1.0
-2.0
+5.5
1H 2H
11
10
7
6
5
4
3
2
1
OFF
Dry Max
*12
*11
*9
*8
*10
+6.0
TA-Tsc
3H 4H
+5.0
+4.5
+4.0
+2.0
+0.5
-0.5
12
9
8
Time
Zone Frequency FAN
MinHz
Fan speed depend on presetting and can change every speed.
0
-1.5
Time
correction
+1
ZONE
±0
-1
ZONE
min 1
Hz B10UFV-E1 B13UFV-E1 B18UFV-E1
a20
c
1) The control target temperature
increase 0.5ºC per hour up to 2ºC
starting from the set temperature
when ECONO has been received.
2) The indoor fan speed is depend
on presetting and can change
every speed after setting ECO
operation.
<Cooling operation>
2) The indoor fan speed is depend
on presetting and can change
every speed after setting ECO
operation.
3) The compressor speed is
controlled as shown in the left
figure.
4) The time correction is performed
every 8minutes.
50
20
50
15
68
Hz B10UFV-E1 B13UFV-E1 B18UFV-E1
Cool min 20
35
20
37
11
49
DRY max
– 45 –
Item
12. Test
operation
Operation flow and applicable data, etc.
When keeping [OPERATION] button pressed for
10 seconds or more, the temporary [COOL] operation
is performed.
Description
1) When pressing [OPERATION] button, the
previous setting operation starts.
2) When keeping [OPERATION] button pressed
for 3 seconds or more, Pi, Pi, Pi sound is
heard and [AUTO RESTART] control is
changed.
3) When keeping [OPERATION] button pressed
for 10 seconds or more, “Pi” sound is
heard and the test [COOL]
operation starts.
4) If the filter lamp goes on, press [OPERTION]
button to go off the filter lamp, and then
press [OPERTION] button again.
5) To stop the test operation, press
the button again.
Filter lamp ON Press [OPERATION] button.
Did you press [OPERATION] button
for 3 seconds or more?
Did you press [OPERATION] button
for 10 seconds or more?
Switch to [AUTO RESTART] control.
YES
YES
NO
NO
NO
YES
Previous setting operation
Test [COOL] Operation
1. Purpose
This function detects error on the
refrigerating cycle or error on the com-
pressor, and performs protective control.
2. Operation
•Control of the compressor speed
The speed control is performed as
described in the left table based upon
the discharge temperature.
Td value
117°C
112°C
108°C
105°C
98°C
Contr ol operation
Judges as an error and stops the compressor.
Reduce the compressor speed.
Reduce slowly compressor speed.
Keeps the compressor speed.
If the operation is performed with lower speed than one
commanded by the serial signal, speed is slowly raised
up to the commanded speed.
Operates with speed commanded by the serial signal.
13. Discharge temperature control
– 46 –
Item
14. Pulse
Modulating
value (P.M.V.)
Operation flow and applicable data, etc.
This function controls throttle amount of the
refrigerant in the refrigerating cycle.
According to operating status of the air conditioner,
this function also controls the open degree of valve
with an expansion valve with pulse Modulation.
Description
1) When starting the operation, move the
valve once until it fits to the stopper.
(Initialize)
In this time, “Click” sound may be
heard.
2) Adjust the open degree of valve by super
heat amount. (SH control)
3) If the discharge temperature was exces-
sively up, adjust the open degree of valve
so that it is in the range of set tempera-
ture.
(Discharge temp. control)
4) When defrost operation is performed, the
open degree of valve is adjusted accord-
ing to each setup conditions during
preparation for defrost and during defrost
operation (4-way valve is inversed.).
5) To turn off the compressor while the air
conditioner stops by control of the
thermostat or by remote controller, adjust
the open degree of valve to the setup
value before stop of the compressor.
* SH (Super Heat amount) =
TS (Temperature of suction pipe of the compressor) –
TC or TE (Heat exchanger temperature at evaporation side)
* PMV: Pulse Modulating Valve
Starting up
Defrost
Initialize
Move to
initial position
*PMV open degree control
*SH control Td
release control
Stop by
remote controller
Power OFF
Room temp. sensor
(Ta sensor) control
Compressor ON
control
– 47 –
Item
15. Self-Cleaning
Operation flow and applicable data, etc.
1. Purpose
The Self-Cleaning operation is to minimize the
growth of mold, bacteria etc. by running
the fan and drying so as to keep the
inside of the air conditioner clean.
Self-Cleaning operation
When the cooling or dry operation shuts
down, the unit automatically starts the Self-
Cleaning operation which is then performed
for the specified period based on duration
of the operation which was performed
prior to the shutdown, after which the
Self-Cleaning operation stops.
(The Self-Cleaning operation is not
performed after a heating operation.)
2. Operation
1) When the stop signal from the remote
controller or timer-off function is received,
only the timer indicator light.
2) The period of the Self-Cleaning operation
is determined by the duration of the
operation performed prior to the
reception of the stop code.
3) After the Self-Cleaning operation has
been performed for the specified period,
the unit stops operating.
Unit now performing cooling or dry operation
Press “STOP” button
Only timer indicator lights, and Self Cleaning operation starts
Time set now elapses
Operation stops
function
• During Self-Cleaning operations: The louver opens
slightly. The indoor fan operates continuously at
a speed of 240 rpm.
Cooling: Auto (cooling) Dry
Heating: Auto (heating)
Auto (fan only)
Shutdown
Operation time
Up to 10 minutes No Self-Cleaning operation
performed (0 minutes)
10 minutes 30 mins.
or longer
No Self-Cleaning operation performed
• To stop an ongoing Self-Cleaning operation at any time
Press the start/stop button on the remote controller twice during the Self-Cleaning
operation. (After pressing the button for the first time, press it for the
Self-Cleaning operation times
second time without delay (within 10 minutes).)
Description
Self-Cleaning operation time
Item
15. Self-Cleaning
function
Operation flow and applicable data, etc.
• Self-Cleaning diagram
Description
16. Self-Cleaning
function release
Operation display ON OFF OFF
FCU fan ON ON OFF
rpm is depend on presetting. (240RPM)
Upper airoutlet OPEN OPEN (11º) CLOSE
Timer display ON or OFF ON ON or OFF
depend on presetting of timer function. depend on presetting of timer function.
Compressor ON or OFF OFF OFF
depend on presetting per room temperature.
CDU fan ON or OFF OFF OFF
depend on presetting per room temperature.
Cool mode or dry mode
operation more than 10 mins.
Self-Cleaning mode
operate 30 mins.
Automatically turn-off.
Operation time
Turn off by remote controller or
timer-off function.
How to cencel Self-Cleaning function
To cancel the Self-Cleaning function, proceed as
follows:
Press and hold [MODE] button on opreation
panel for more than 10 seconds.
(less than 20 seconds)
− 48 −
Lower airoutlet OPEN or CLOSE OPEN or CLOSE
depend on airoutlet selection depend on airoutlet selection
OPEN or CLOSE
depend on airoutlet selection
After holding about 10 seconds, the air conditioner
beep 4 times without any blinking of display.
After releasing [Mode] button, Self-Cleaning
function is cancelled.
How to set Self-Cleaning function
To set the Self-Cleaning function, proceed as
follows:
Press and hold [MODE] button on opreation
panel for more than 10 seconds.
(less than 20 seconds)
After releasing [Mode] button, Self-Cleaning
function is set.
After holding about 10 seconds, the air conditioner
beep 4 times and OPERATION display blinks
5 seconds.
Item
17. Remote-A or B
selection
Operation flow and applicable data, etc. Description
1. Purpose
This operation is to operate only one
indoor unit using one remote controller.
2. Description
When operating one indoor unit in a
situation where two indoor units have
been installed in the same room or
nearby rooms, this operation prevents the
remote controll signal from being
received simultaneously by both units,
thus preventing both units from operating.
3. Operation
The indoor unit on which the remote
controll selection has been set to B
receives the signal of the remote control
also set to B.
(At the factory the remote controller
selection is set to A on all the indoor
units. There is no A setting display.)
To separate using of remote control for each indoor
unit in case of 2 air conditioner are installed nearly.
Remote Control B Setup.
1) Press RESET button on the indoor unit to turn
2) Point the remote control at the indoor unit.
3) Push and hold CHK • button on the Remote
Control by the tip of the pencil. "00" will be shown
the air conditioner ON.
shown on the display.
4) Press MODE • during pushing CHK • . "B" will
show on the display and "00" will disappear and
the air conditioner will turn OFF. The Remote
Control B is memorized.
Note : 1. Repeat above step to reset Remote Control
to be A.
2. Remote Control A has not "A" display.
3. Default setting of Remote Control from
factory is A.
− 49 −
Indoor Unit B Setup.
1) Press and hold [Mode] button for more than
2) After holding 20 seconds, the air conditioner
beep 5 times, without any blinking of display.
20 seconds.
3) After releasing [Mode] button, Indoor Unit B is set.
Note :
1. After holding 10 seconds, the air conditioner
beep 4 times, but continue to hold [ Mode] button.
2. Repeat above step to reset Indoor Unit A.
After holding 20 seconds, the airconditioner
beep 5 times and operation display blinks for
5 seconds.
Item
18. QUIET mode
Operation flow and applicable data, etc. Description
When the [QUIET] button is pressed, the fan of the
indoor unit will be restricted the revolving speed at
−until the [QUIET] button is pressed once
Remarks :
1. Quiet mode is unable to work in dry mode.
2. Quiet mode is appropriate to work with less
cooling load and less heating load condition.
Quiet mode is the system which, control the
revolving speed of indoor fan to work
constantly at lower than speed L. In addition,
noise level of indoor unit is less than usual.
speed L
again (cancel Quiet mode).
Because of the fan speed L- may cause not
enough the cooling capacity or heating
19. COMFORT The principles of comfort sleep mode are:
• Quietness for more comfortable. When
• Save energy by changing room temperature
• The air condition can shut down by itself
Remarks:
1. Comfort sleep mode will not operate in dry
automatically.
mode.
automatically.
room temperature reach setting temperature
Cooling mode
• The preset temperature will increase as
show on ECO operation (Item No. 9)
• Press the [COMFORT SLEEP] button to
choose the operating hours. Repeat
pressing to select the hours.
• If the [COMFORT SLEEP] button is pressed
again means cancel comfort sleep mode.
Heating mode
• The preset temperature will drop down as
show on ECO operation (Item No. 9)
choose the operating hours. Repeat
• Press the [COMFORT SLEEP] button to
pressing to setect thehours.
• If the [COMFORT SLEEP] button is pressed
again means cancel comfort sleep mode.
(1hr, 3hr, 5hr or 9hr)
(1hr, 3hr, 5hr or 9 hr)
20. Short Timer In the normal condition, after switching one circuit
breaker, 3-minute delay time for compressor and
1 hour for plasma air purifier are set for the
maintenance of the unit.
Purpose
To start the unit immediately for the purpose of
testing, trial...etc, short timer can be used.
maintenance of the unit.
Short Timer Setting
control without sending the signal to
[CHK] button and hold, "00" will show
to make "00" disappear.
setting on the remote operates
front panel turns ON continuously for
j Press [ ] button to turn the unit OFF.
k Set the operation mode on the remote
the unit.
l Use the tip of the pencil to push the
on display, them press [SET] button
m
Press [ ] button to turn the unit ON.
n When short timer is activated, all
immediately, besides, all indicatiors on
3 seconds.
− 50 −
capacity.
SLEEP
AUTO
AUTO
FIX
PRESET
ONE-TOUCH
SWING
FLOOR TIMER
ON
FILTER
CHK
CLOCK
OFF
SLEEP
SET
CLR
Hi-POWER ECO
QUIET COMFORT
SLEEP
MODE
TEMP
FAN
l
m
Item
21. One-Touch
Operation flow and applicable data, etc. Description
0 12 25
AUTO
*AUTO/L L
Fan
Operation
Time after operation
starts (min)
One touch comfort is the fully automated operation
that is set according to the preferable condition in
a region.
22. Hi-POWER ([Hi-POWER] button on the remote controller
is pressed)
When [Hi-POWER] button is pressed while the indoor
unit is in Auto, Cooling or Heating operation, Hi-
.
Comfort
*AUTO/L: Fan operates depends on the setting
temperature and room temperature.
During the One Touch Comfort mode if the indoor
unit receives any signal with other operation mode,
the unit will cancel the comfort mode and operates
according to the signal received.
Operation condition for model to Europe
market
When an indoor unit receives "One Touch
Comfort Signal" from the remote controller,
the indoor unit operates as following.
1) Air conditioner starts to operation when
the signal is received, even if the air
conditioner was OFF.
2) Operation mode is set according to room
temperature, the same as AUTO mode.
3) Target temperature is 24ºC.
4) Louver position is set as stored position
of the operating mode.
5) Fan is controlled as followings.
Mode
POWER mark is indicated on the display of the remote
controller and the unit operates as follows.
1. Automatic operation
• The indoor unit operates in according to the
current operation.
2. Cooling operation
remote controller does not change.)
The indoor unit's fan speed level increase 1 tap
• The preset temperature drops 1ºC
(The value of the preset temperature on the
3. Heating operation
remote controller does not change.)
The indoor unit's fan speed level increase 1 tap
• The preset temperature increases 2ºC
(The value of the preset temperature on the
4. The Hi-POWER mode can not be set in Dry
operation
23. FILTER When the elapsed time reaches 1000 hours after
Indicator
operation, the FILTER indicator lights.
After cleaning the filters, turn off the FILTER indicator.
How to Turn Off FILTER Indicator
Press [OPERATION] button on the indoor unit.
− 51 −
Item
24. Set temp.
Operation flow and applicable data,etc Description
correction Set temp. can be corrected by changing the set temp.
correnction value.
Initial setting of the set temp. correction value is 0.
For example, when set temp. is 25°C
but room temp. is stable 27°C at cooling
Set temp. = Set temp. (TS)+ Set temp. correction
Set temp. (TS) : remote control or indoor unit display setting
1. Purpose
temperature can be corrected.
• Continue to push and hold AIR
OUTLET SELECT button.
AIR OUTLET SELECT button
Set temp. correction
Cooling
(Dry mode)
Heating
−5 ∼ +5°C
−5 ∼ +5°C
3. Push OPERATION button on the unit operation panel
10 times.
When the difference between the set
temperature of the remote control and
the room temperature is wide due to
the installation condition, etc, the set
2. Description
< How to change the set temp. correction >
1. Operate the air conditioner and select cooling or heating
mode.
(The set temp. correction can't be changed at standby
mode.)
2. Push and hold AIR OUTLET SELECT button on the unit
operation panel
Set temp. correction value is displayed on the
TEMPERATURE indicator.
TEMPERATURE OPERATION button
4. Push TEMPERATURE button (UP or DOWN) to change
set temp. correction.
TEMPERATURE button
5. Release AIR OUTLET SELECT button.
Set temp. correction is memorized and set temp. value is
displayed on the TEMPERATURE indicator again.
• Continue to push and hold AIROUTLET
SELECT button.
mode, chage set temp. correction
(Cooling) from 0 to − 2°C
− 52 −
Item
25. Outdoor
Operation flow and applicable data,etc Description
MODE RAS-B18UFV-E
Heating
Cooling
Normal
RAS-B13UFV-E
RAS-B10UFV-E
(rps)
Normal
(rps)
Normal
(rps)
Normal
(rps)
Normal
(rps) Normal
(rps)
62
86
53
73
94
99
77
76
85
85
72
72
Quiet control As shown in the table, the max. revolution number of
compressor can be reduced.
As the max. number of revolution of compressor is restricted.
the rise-up performance at the start time is weakened.
This function is disable with multi-outdoor unit connecting.
1. Purpose
noise.
• It can be change setting whether air
For the users who concern about
noise of the outdoor unit, this control
controls the max. revolution number
of the compressor to reduce the
2. Description
< How to set Outdoor Quiet control >
1. Push and hold OPERATION button for 20seconds.
• After pushing OPERATION button, air
conditioner starts operation.
(for only
1:1 outdoor
unit)
When air conditioner is on standby before setting.
conditioner is operationg or not.
OPERATION button
2. After holding 20seconds, beep sounds is heard and
OPERATION indicator flashes for 5seconds.
Release OPERATION button.
OPERATION indicator
3. Push OPERATION button to stop temporary operation.
(Set Auto restart function again)
< How to cancel Outdoor Quiet control >
1. Push and hold OPERATION button for 20seconds.
OPERATION button
2. After holding 20seconds, beep sounds is heard.
(OPERATION indicator doesn't flash).
Release OPERATION button.
3. Push OPERATION button to stop temporary operation.
(Set Auto restart function again)
• After pushing OPERATION button, air
conditioner starts operation.
• After 3seconds, 3 beeps are heard.
(Auto restart setting is changed.)
• After 10seconds, a beep is heard.
(Temporary operation starts and Auto
restart function is cancelled.)
• After 3seconds, 3 beeps are heard.
(Auto restart setting is changed.)
• After 10seconds, a beep is heard.
(Temporary operation starts and Auto
restart function is cancelled.)
− 53 −
Item
25. Outdoor
Operation flow and applicable data,etc Description
Quiet control < How to set Outdoor Quiet control >
1. Push and hold OPERATION button for 20seconds.
• After pushing OPERATION button, air
conditioner starts operation.
(for only
1:1 outdoor
unit)
When air conditioner is in operation before setting.
OPERATION button
2. After holding 20seconds, beep sounds is heard and
OPERATION indicator flashes for 5seconds.
Release OPERATION button.
OPERATION indicator
< How to cancel Outdoor Quiet control >
1. Push and hold OPERATION button for 20seconds.
OPERATION button
2. After holding 20seconds, beep sounds is heard.
(OPERATION indicator doesn't flash).
Release OPERATION button.
• After pushing OPERATION button, air
conditioner stops operation.
• After 3seconds, 3 beeps are heard.
(Auto restart setting is changed.)
• After 3seconds, 3 beeps are heard.
(Auto restart setting is changed.)
− 54 −
– 55 –
Operation
Press [OPERATION] button for more than
three seconds. (Less than 10 seconds)
Motions
The unit is on standby.
.
The unit starts to operate. The operation indicator is on.
.After approx. three seconds,
The unit beeps three times The operation indicator flashes
and continues to operate. for 5 seconds.
If the unit is not required to operate at this time, press [OPERATION]
button once more or use the remote control to turn it off.
Operation
Press [OPERATION] button for more than
three seconds. (Less than 10 seconds)
Motions
The unit is in operation. The operation indicator is on.
.
The unit stops operating. The operation indicator is turned off.
.After approx. three seconds,
The unit beeps three times. The operation indicator flashes
for 5 seconds.
If the unit is required to operate at this time, press [OPERATION] button
once more or use the remote control to turn it on.
9-3. Auto Restart Function
This indoor unit is equipped with an automatic restarting function which allows the unit to restart operating with
the set operating conditions in the event of a power supply being accidentally shut down.
The operation will resume without warning three minutes after power is restored.
This function is not set to work when shipped from the factory. Therefore it is necessary to set it to work.
9-3-1. How to Set the Auto Restart Function
To set the auto restart function, proceed as follows:
The power supply to the unit must be on ; the function will not set if the power is off.
Press the [OPERATION] button located in the display of the indoor unit continuously for three seconds.
The unit receives the signal and beeps three times.
The unit then restarts operating automatically in the event of power supply being accidentally shut down.
•When the unit is standby (Not operating)
•When the unit is in operation
• While the filter check indicator is on, OPERATION button has the function of filter reset betton.
– 56 –
Operation
Press [OPERATION] button for more than
three seconds. (Less than 10 seconds)
Motions
The unit is on standby.
.
The unit starts to operate. The operation indicator is on.
.After approx. three seconds,
The unit beeps three times and continues to operate.
If the unit is not required to operate at this time, press [OPERATION]
button once more or use the remote control to turn it off.
Operation
Press [OPERATION] button for more than
three seconds. (Less than 10 seconds)
Motions
The unit is in operation. The operation indicator is on.
.
The unit stops operating. The operation indicator is turned off.
.After approx. three seconds,
The unit beeps three times.
If the unit is required to operate at this time, press [OPERATION] button
once more or use the remote control to turn it on.
9-3-2. How to Cancel the Auto Restart Function
To cancel auto restart function, proceed as follows :
Repeat the setting procedure : the unit receives the signal and beeps three times.
The unit will be required to be turned on with the remote control after the main power supply is turned off.
•When the system is on stand-by (not operating)
•When the system is operating
9-3-3. Power Failure During Timer Operation
When the unit is turned off because of power failure
during timer operation, the timer operation is can-
celled. In that case, set the timer operation again.
NOTE :
The Everyday Timer is reset while a command signal
can be received from the remote control even if it
stopped due to a power failure.
1111 Infrared signal emitter
Start/Stop button
Mode select button (MODE)
Temperature button (TEMP)
Fan speed button (FAN)
Swing louver button (SWING)
Set louver button (FIX)
On timer button (ON)
Off timer button (OFF)
Sleep timer button (SLEEP)
Setup button (SET)
Clear button (CLR)
Memory and Preset button (PRESET)
One Touch button (ONE-TOUCH)
High power button (Hi-POWER)
Economy button (ECO)
Quiet button (QUIET)
Comfort sleep button (COMFORT SLEEP)
Filter reset button (FILTER)
Clock Reset button (CLOCK)
Check button (CHK)
Floor warming mode button (FLOOR)
1
2
9
9-4. Remote control
9-4-1. Remote control and its functions
18
− 57 −
3
4
5
6
7
8
10
19
11
20
12
13
14
15
16
17
18
19
19
9-4-2. Operation of remote control
1. ONE-TOUCH
Press the "ONE-TOUCH" button for fully automated operation that is customised to the typical consumer
preferences in your region of the world. The coutomised settings control temperature air flow strength, air flow
direction and other settings to provide you alternate contact with "ONE-TOUCH" of the button. If you
prefer other settings you can select from the many other operation functions of your Toshiba unit
Press ONE-TOUCH : Start the operaton.
2. AUTOMATIC OPERATION
To automatically select cooling, heating operation.
1. Press MODE : Select A.
2. Press MODE : Select A.
3. COOLING / HEATING OPERATION
1. Press MODE : Select Cool or Heat .
2. Press MODE : Set the desired temperature.
Cooling: Min. 17°C, Heating : Max. 30°C.
3. Press FAN : Select AUTO, LOW , LOW+ , MED , MED+ , or
HIGH .
20
22
21
– 58 –
4. DRY OPERATION (COOLING ONLY)
For dehumidification, a moderate cooling performance is controlled automatically.
1. Press MODE : Select Dry .
2. Press MODE : Set the desired temperature.
5. Hi-POWER OPERATION
6. FLOOR WARMING OPERATION
To automatically control room temperature and airflow for faster cooling or heating
Press HI-POWER : Start and stop the operation.
operation (except in DRY and FAN ONLY mode)
7. ECO OPERATION
To automatically control room to save energy (except in DRY and FAN ONLY mode)
Press ECO : Start and stop the operation.
Note: Cooling operation; the set temperature will increase automatically 1 degree/
hour for 2 hours (maximum 2 degrees increase). For heating operation the
set temperature will decrease.
8. TEMPORARY OPERATION
In case of the misplaced or discharged remote control
• Pressing the RESET button, the unit can start or stop
without using the remote control.
• Operation mode is set on AUTOMATIC
operation, preset temperature is 24°C
and fan operation is automatic speed.
9. TIMER OPERATION
Setting the ON Timer Setting the OFF Timer
Press
ON
: Set the desired ON timer.
Press
OFF
: Set the desired OFF timer.
Press SET : Set the timer. Press SET : Set the timer.
Press
CLR
: Cancel the timer. Press : Cancel the timer.
CLR
Press
ON
: Set the ON timer. Press SET .
Press
OFF
: Set the OFF timer. Press SET button during the ( or )
mark flashing.
1
1
2
3
2
3
3
4
Everyday timer allows the user to set both the ON & OFF timers and will be activated on a daily basis.
Setting Everyday Timer
· During the every day timer is activation, both arrows are indicated.
( or )
Heating will operate with downward blowing only.
Temperature of air outlet will be higher than usual.
Note:
· Keep the remote control in accessible transmission to the indoor unit;
otherwise, the time lag of up to 15 minutes will occur.
· The setting will be saved for the next same operation.
− 59 −
10. PRESET OPERATION
Set your preferred operation for future use. The setting will be memorized by the
unit for future operation (except air flow direction).
1. Select your preferred operation.
2. Press and hold PRESET for 3 seconds to memorize the setting. The mark
P
displays.
3. Press PRESET : Operate the preset operation.
11. AUTO RESTART OPERATION
To automatically restart the conditioner after the power failure (Power of the unit
must be on.)
1. Press and hold the RESET button on the indoor unit for 3 seconds to set the
operation. (3 beep sound and OPERATION lamp blink 5 time/sec for 5 secpmds)
• Do not operate ON timer and OFF timer.
2. Press and hold the RESET button on the indoor unit for 3 seconds to cancel the
Setting
operation. (3 beep sound but OPERATION lamp does not blink)
12. QUIET OPERATION
To operate at super low fan speed for quiet operation (except in DRY mode)
Press QUIET : Start and stop the operation.
Note: Under certain conditions, QUIET operation may not provide adequate
cooling or heating due to low sound features.
13. COMFORT SLEEP OPERATION
To save energy while sleeping, automatically control air flow and automatically turn OFF.
Press COMFORT SLEEP : Select 1, 3, 5 or 9 hrs for OFF timer operation.
Note: The cooling operation, the set temperature will increase automatically
1 degree/hour for 2 hours (maximum 2 degrees increase). For heating operation,
the set temperature will decrease.
14. SLEEP TIMER OPERATION
To start the sleep timer (OFF timer) operation
Press SLEEP : Select 1, 3, 5 or 9 hrs for OFF timer operation.
Press CLR to cancel the sleep timer operation.
15. FILTER RESET
Firstly, turn off the circuit breaker.
FILTER lamp lights on; the filter must be cleaned.
To turn off the lamp, push OPERATION button on the indoor unit or the FILTER.
button on the remote control.
Note: The filter indicator turns on after turns on after about 1000 hours.
• Clean the indoor unit and the remote control with a wet cloth when needed.
• No benzine, thinner, polishing powder or chemically-treated duster.
Indoor Unit and Remote Control
− 60 −
16. SELF CLEANING OPERATION (COOL AND DRY OPERATION ONLY)
Cleaning operation
This function is used to dry the inside of the air conditioner to reduce te growth of
mold, etc. indide the air conditioner.
• When the unit shuts down after having operated for 10 or more minutes in
the cooling or dry mode, the cleaning operation is started automatically, and
the TIMER indicator on the nuit's display panel turns on.
Cleaning operation duration
• The cleaning operation lasts for 30 minutes if the unit has been operating in
the cooling or dry mode for 10 minutes or more.
Note:
• SELF CLEANING operation is default setting from factory.
• How to cancel SELF CLEANING operation.
Press and hold MODE button on operation panel for more than 10 seconds
(less than 20 seconds). When canceling, 4 beeps sound.
• How to activate SELE CLEANING operation.
Press and hold MODE button on operation panel for more than 10 seconds
(less than 20 seconds). Then, 4 beeps will sound and operation lamp will
blink for 5 seconds.
17. OPERATION AND PERFORMANCE
1. Three-minute protection feature: To prevent the unit from being activated for
3 minutes when suddenly restarted or switched to ON.
2. Preheating operation: Warm up the unit for 5 minutes before blowing warm air.
3. Warm air control: When the room temperature reaches the set temperature,
the fan speed is automatically reduced and the outdoor unit will stop.
4. Automatic defrosting: Fans will stop during defrost operation.
5. Heating capacity: heat is absorbed from outdoor and released into the room.
When the outdoor temperature is too low, use another recommended heating
apparatus in combination with the air conditioner.
6. Consideration for accumulated snow: Select the position for outdoor unit when it
will not be subjected to snow drifts, accumulation of leaves or other seasonal debris.
7. Some minor cracking sound may occur when unit operating. This is normal because
the cracking sound may be caused by expansion/contraction of plastic.
∗ Concerning multiple connections, please inquire to the dealership or refer to the catalog.
Operation
Temp. Outdoor Temperature
RAS-10, 13,18SAV Series Room Temperature
Heating
Cooling
Dry
-15°C ~ 24°C
-10°C ~ 46°C
-10°C ~ 46°C
Less than 28°C
21°C ~ 32°C
17°C ~ 32°C
− 61 −
18. TROUBLESHOOTING (CHECK POINT)
19. REMOTE CONTROL A-B SELECTION
To separate using of remote control for each indoor unit in case of 2 air conditioners
Unit B setup.
Press and hold MODE button for more than 20 seconds.
When A setup changed to B setup : 5 beeps will sound and operation lamp
20. ADJUSTING BRIGHTNESS OF UNIT DISPLAY PANEL
1. Press and hold AIR OUTLET SELECT button then press MODE button for 3 times
(All lamp of the unit display panel will be switched on).
(At that time, please press and hold the AIR OUTLET SELECT button)
2. Press and hold AIR OUTLET SELECT button on Unit display panel, then press
• Check whether the operation mode is different from what has been selected
for the units in the other rooms (The following combinations of operations
In case of multiple connection
The unit does not operate. Cooling or Heating is abnormally low
• The power main switch is turned off.
• The circuit breader is activated to cut
off the power supply.
• Stoppage of electric current.
• ON timer is set.
• The filters are blocked with dust.
• The temperature has been set improperly.
• The windows or doors are opened.
• The air inlet or outlet of the outdoor unit
is blocked.
• The fan speed is too low.
• The operation mode is DRY.
Note: When there is an abnormality in the product, abnormal code (2 digits) will be
displayed on the unit display panel. Please contact the dealership.
cannot be performed: COOL and HEAT, DRY and HEAT).
• Select the same operation mode as for the other rooms.
are installed nearly.
Remote Control B Setup.
1. Push and hold CHK · button on the Remote Control by the tip of the pencil.
"00" will be shown on the display.
2. Press MODE : during pushing CHK ·. "B" will show on the display and "00" will
disappear and the air conditioner will turn OFF. The Remote Control B is memorized.
Note: 1. Repeat above step to reset Remote Control to be A.
2. Remote Control A has not "A" display.
3. Default setting of Remote Control from factory is A.
blinks for 5 seconds.
When B setup changed to A setup : 5 beeps will sound.
TEMPERATION button (Up), (Down) for select the desired brightness.
3. Brightness will be settled when AIR OUTLET SELECT button is released.
Although the temperature indicator is switched off, if press the temperature
button (up) and (down), the set temperature will be indicated, and then can
adjust the temperature.
10 seconds after stopped pressing the button, the temperature indication will
be switched off.
− 62 −
4 stages of brightness can be changed.
21. CHANGE AIR OUTLET GRILLE ON STABLE TIME (COOLING ONLY)
On cooling operation, whichever air outlet is set, only Upper is used when the room temperature
Temperature indicator Other lamp
1
2
3
4
Usual
Darkness
Turn off
Turn off
Usual
Darkness
Turn off
Darkness
approaches the ser temperature.
In case to keep pu/down blowing, operate as below;
Press and hold AIR OUTLET SELECT button for more than 10 seconds (less than 20 seconds)
(4 beeps will sound then "1" indication at TEMPERATURE indicator will light up for 5 seconds).
For return to the former status, press and hold AIR OUTLET SELECT button for more than
4 seconds once again (In this time, 4 beeps will sound then "0" indication at TEMPERATURE
indicator will blinks for 5 seconds).
22. AIR INLET GRILLE MANTENANCE
Wash the air inlet grille with water using the soft sponge or towel.
• Dry it well in a shadow area after washing.
• Scour heavy dirt with neutral detergent for kitchen, and rinse it with the water
(Do not use the wire wool).
• Do not press the front panel strongly. It may be cracked.
– 63 –
1
7
912
4
8
63
11
10213
5
9-4-3. Name and Functions of Indications on Remote Controller
[Display]
All indications, except for the clock time indicator, are displayed by pressing the button.
1
Transmission mark
This transmission mark indicates when the
remote controller transmits signals to the indoor
unit.
2
Mode indicator
Indicates the current operation mode.
(A : Auto changeover control,
: Cool, : Dry, : Heat)
3
Temperature indicator
Indicates the temperature setting.
(17°C to 30°C)
5
TIMER and clock time indicator
The time setting for timer operation or the clock
time is indicated.
The current time is always indicated except
during TIMER operation.
6
Hi-POWER indicator
Indicates when the Hi-POWER operation starts.
Press the Hi-POWER button to start and press it
again to stop the operation.
7
(PRESET) indicator
Flashes for 3 seconds when the PRESET button is
pressed during operation.
The mark is shown when holding down the
button for more than 3 seconds while the mark is
flashing.
Press another button to turn off the mark.
8
ECO indicator
Indicates when the ECO is in activated.
Press the ECO button to start and press it again
to stop operation.
9
A, B change indicator remote controller
When the remote controller switching function is
set, “B” appears in the remote controller display.
(When the remote controller setting is “A”, there is
no indication at this position.)
10 Comfort sleep
Indicates when comfort sleep is activaled.
Press comfort sleep button to selectter
11 Quiet
Indicates when quiet is activated.
Press quiet button to start and press it again to stop
operation.
12 One-Touch
Indicates when one touch comfort is activated.
Press one-touch button to start the operation.
13 Swing
Indicates when louver is swing.
Press swing button to start the swing operation
and press it again to stop the swing operation.
4
FAN speed indicator
Indicates the selected fan speed.
AUTO or five fan speed levels
(
LOW , LOW
+
, MED , MED
+
,
HIGH ) can be shown.
Indicates AUTO when the operating mode is
either AUTO or : Dry.
–64 –
9-5. Indoor Unit Display & Unit Operation Panel
This indoor unit can be operated with the unit operation panel or using remote control.
Operational contents will be followed the one which was operated later.
If change the set temperature with operation panel of unit, temperature indication will be changed,
but the temperature display on the remote control will not change.
If set the air flow only with the upper port, a little air flow may happen at the lower port.
6
14
3
1
4
5
Remote control
light receiver
10 11 12 13
7892
15
1111 OPERATION button : Unit operation ON/OFF button, turn off FILTER CHECK indicator.
MODE button : Operation mode (Auto→Cooling→Heating→Aoto→ • • • )
AIR OUTLET SELECT button : Cooling, Auto (Upper & Lower→ Upper→ Upper & Lower→• • • )
3
1
2
∗CHILD LOCK function : Press MODE button for 3 seconds. (It is possible to operate even when stopping.)
To cancel CHILD LOCK function, press MODE button for 3 seconds once again.
When CHILD LOCK function is activated, 3 beeps will sound.
When press MODE button to cancel the function, a beep will sound and then 3 seconds later 3 beep
sound may occur.
The indicator button will be invalid while the child lock function is activated.
(When press the button, 1 beep will sound).
Operation with remote control during the CHILD LOCK function works.
This function is cancelled when the power supply is off or failure.
Dry (upper only)
Heating (Upper & Lower→ Upper→ Upper & Lower→• • • )
On cooling operation, whichever air outlet is set, only Upper is used when the room temperature
approaches the set temperature.
During stop operation : Open/Close the lower air outlet grille.
When the TEMPERATURE indicator display "CL" the lower air outlet grille will be in closed status.
When the TEMPERATURE indicator display "OP" the lower air outlet grille will be in open status.
TEMPERATURE button (Up) : Setting temperature increase by 1°C
4(17°C→18°C • • • 30°C )
TEMPERATURE button (Down) : Setting temperature decrease by 1°C
5(30°C→ 29°C • • • 17°C )
COOL and DRY indicator (Blue)
6
HEAT indicator (Orange)
7
AUTO indicator (Green)
8
OPERATION indicator (Green)
9
HI-POWER indicator (Green)
10
FLOOR indicator (Orange)
TIMER indicator (Yellow)
FILTER CHECK indicator (Red)
11
12
13
TEMPERATURE indicator (Blue)
AIR OUTLET indicator (Green)
14
15
–65 –
10. INSTALLATION PROCEDURE
10-1. Installation Diagram of Indoor and Outdoor Units
(A)
(B)
(C)
(D)
Vinyl tape
Apply after carrying
out a drainage test.
600 mm or more only
when unobstructed
to the front and both
sides.
Extension
drain hose
(Not available,
provided by installer)
100 mm or more
100 mm or more
600 mm or more
600 mm or more
Saddle
1Installation plate
50 mm or more
50 mm or more
Shield pipe
Air Þ lter
5Filter
6Filter
70 mm or more
3Batteries
8Pan head
wood screw 4Remote control holder
Remark :
€ Detail of accessory and installation
parts can see in the accessory sheet.
When installing the outdoor unit,
leave open in at least two of direction
(A), (B), (C) and (D) shown in the
Þ gure on the right.
Do not allow the drain hose to get
slack.
Make sure to run the drain hose
sloped downward.
The auxiliary piping can be
connected to the left, rear left, rear
right, right, bottom right or bottom
left.
Insulate the refrigerant pipes
separately with insulation, not
together.
8 mm thick heat resisting
polyethylene foam
Cut the piping
hole sloped
slightly.
Right
Rear right Left
Bottom right Rear left
Bottom left
CAUTION
Install in rooms that are 13 m3or larger.
If a leak of refrigerator gas occurs
inside the room, an oxygen deÞ ciency
can occur.
7Mounting screw 9Insulation sheet
2Wireless remote control
1 Installation plate
50 mm or more
50 mm or more
Shield pipe
Air filter
5 Filter
5 Filter
70 mm or more
3 Batteries
7 Pan head
wood screw 4 Remote control holder
Do not allow the drain hose to get
slack.
Make sure to run the drain hose
sloped downward.
The auxiliary piping can be
connected to the left, rear left, rear
right, right, bottom right or bottom
left.
Cut the piping
hole sloped
slightly.
Right
Rear right Left
Bottom right Rear left
Bottom left
6 Mounting screw 8 Insulation sheet
2 Wireless remote control
8 mm thick heat resisting
polyethylene foam
Insulate the refrigerant pipes
separately with insulation, not together.
In case of right or left piping
cut dot-line area
ACL
• Loading Batteries
1. Remove the battery cover.
2. Insert 2 new batteries (AAA type)
following the (+) and (–) positions.
Before installing the wireless remote controller
3 Batteries
2 Wireless remote controller
(A)
(B)
(C)
(D)
100 mm or more
600 mm or more
600 mm or more
600 mm or more
100 mm or more
Vinyl tape
Apply after carrying
out a drainage test.
Saddle
Extension
drain hose
(Not available,
provided by installer)
Remark :
• Detail of accessory and installation
parts can see in the accessory sheet.
When installing the outdoor unit,
leave open in at least two of direction
(A), (B), (C) and (D) shown in the
f gure on the right.
CAUTION
Install in rooms that are 13 m3 or larger.
If a leak of refrigerator gas occurs
inside the room, an oxygen def ciency
can occur.
10-2. Optional Parts, Accessories and Tools
10-2-1. Optional Installation Parts
Fig. 10-2-1
Secure the outdoor unit with fixing bolts and nuts if the unit is likely to be exposed to a strong wind.
Use ∅ 8 mm or ∅ 10 mm anchor bolts and nuts.
·
·
If it is necessary to drain the defrost water, attach drain nipple 9 and cap water proof 10 to the
·
bottom plate of the outdoor unit before installing it.
A
Air inlet
Air outlet
Drain outlet
600 mm
90 mm
125 mm108 mm
28 mm
86 mm
102 mm
320 mm
25 mm
Æ
Parts name
Refrigerant piping
Liquid side : ∅6.35 mm
Gas side : ∅9.52 mm
Pipe insulating material
(polyethylene foam, 8 mm thick)
Putty, PVC tapes
Part
Code Q'ty
One
each
1
One
each
(RAS-B10,13UFV1 Series)
∅12.70 mm
(RAS-B18UFV1 Series)
B
C
<Fixing bolt arrangement of outdoor unit>
* Drain nipple and cap
water proof are packed
in outdoor unit.
When using a multi-system outdoor unit is used, refer to the installation manual provided with
the model concerned.
–66 –
Part
No.
1
2
3
Part name (Q’ty)
Installation plate x 1
Wireless remote control x 1
Battery x 2
Part name (Q’ty)
Remote control holder x 1
Part
No.
4
5
6
Part
No.
OthersName
Owner’s manual
Installation manual
Part name (Q’ty)
Insulation sheet x 1
Drain nipple* x 1
10-2-2. Accessory and installation parts
The part marked with asterisk (*) is packaged with the
outdoor unit.
10
AUTO
AUTO
FIX
PRESET
ONE-TOUCH
SWING
FLOOR TIMER
ON
FILTER
CHK
CLOCK
OFF
SLEEP
SET
CLR
Hi-POWER ECO
QUIET COMFORT
SLEEP
MODE
TEMP
FAN
–67 –
Mounting screw
∅
4 x 25
l
x 8
Flat head wood screw
∅
3.1 x 16
l
x 2
Filter (RB-A620DE) x 2
9
8
7
Cap water proof* x 2
–68 –
10-2-3. Installation/Servicing Tools
Changes in the product and components
In the case of an air conditioner using R410A, in order to prevent any other refrigerant from being charged
accidentally, the service port diameter of the outdoor unit control valve (3 way valve) has been changed.
(1/2 UNF 20 threads per inch)
•In order to increase the pressure resisting strength of the refrigerant piping flare processing diameter and size
of opposite side of flare nuts has been changed. (for copper pipes with nominal dimensions 1/2 and 5/8)
New tools for R410A
New tools for R410A
Gauge manifold
Charge hose
Electronic balance
for refrigerant charging
Torque wrench
(nominal diam. 1/2, 5/8)
Flare tool (clutch type)
Gauge for projection
adjustment
Vacuum pump adapter
Gas leakage detector
Applicable to R22 model
×
×
¡
×
¡
——
¡
×
Changes
As pressure is high, it is impossible to measure by means of
conventional gauge. In order to prevent any other refrigerant from
being charged, each port diameter has been changed.
In order to increase pressure resisting strength, hose materials
and port size have been changed (to 1/2 UNF 20 threads per inch).
When purchasing a charge hose, be sure to confirm the port size.
As pressure is high and gasification speed is fast, it is difficult to
read the indicated value by means of charging cylinder, as air
bubbles occur.
The size of opposite sides of flare nuts have been increased.
Incidentally,
a common wrench is used for nominal diameters 1/4 and 3/8.
By increasing the clamp bar’s receiving hole, strength of spring in
the tool has been improved.
Used when flare is made by using conventional flare tool.
Connected to conventional vacuum pump. It is necessary to use
an adapter to prevent vacuum pump oil from flowing back to the
charge hose. The charge hose connecting part has two ports-one
for conventional refrigerant (7/16 UNF 20 threads per inch) and
one for R410A. If the vacuum pump oil (mineral) mixes with R410A
a sludge may occur and damage the equipment.
Exclusive for HFC refrigerant.
•Incidentally, the “refrigerant cylinder” comes with the refrigerant designation (R410A) and protector coating in the
U. S’s ARI specified rose color (ARI color code: PMS 507).
•Also, the “charge port and packing for refrigerant cylinder” require 1/2 UNF 20 threads per inch corresponding to
the charge hose’s port size.
– 69 –
7 m
60
90
7 m
7 m
45
45
60100 45
45
45
45
100 70
60
100
230
150
(700)
(600)
(205)
15 15
90
15
15
272
560
590
670
10-3. Indoor Unit
10-3-1. Installation Place
Remote control
• A place where there are no obstacles such as a curtain that may block the
signal from the remote control.
• Do not install the remote control in a place exposed to direct sunlight or
close to a heating source such as a stove.
• Keep the remote control at least 1 m apart from the nearest TV set or
stereo equipment (This is necessary to prevent image disturbances or
noise interference).
• The location of the remote control should be determined as shown below.
10-3-2. Cutting a Hole and Mounting
When the installation plate is directly mounted
on the wall
1. Securely fil t the installation plate onto the wall by screwing it in the upper
and lower parts to hook up the indoor unit.
2. To mount the installation plate on a concrete wall with anchor bolts, use
the anchor bolt holes as illustrated in the below fi gure.
3. Install the installation plate horizontally in the wall.
NOTE
• When drilling a wall that contains a metal lath, wire lath or metal plate, be
sure to use a pipe hole brim ring sold separately.
• A place which provides the spaces around the indoor unit as shown in the
diagram.
• A place where there are no obstacles near the air inlet and outlet.
• A place which allows easy installation of the piping to the outdoor unit.
• A place which allows the front panel to be opened.
• In case of block, brick, concrete or similar type walls, make ∅5 mm holes
in the wall.
• Insert clip anchors for appropriate mounting screws 6 .
Installation plate
(Keep horizontal direction)
ˇ5 mm hole
Clip anchor
(local parts)
Anchor bolt
Projection
15 mm or less
Cutting a hole
Mounting the installation plate and screw position
• Direct sunlight to the indoor unit's wireless receiver should be avoided.
• The microprocessor in the indoor unit should not be too close to RF
noise sources.
(For details, see the owner's manual)
1. After determining the pipe hole position, drill the pipe hole (∅65 mm) at a
slight downward slant to the outdoor side.
6 Mounting screw
∅4 mm x 25 l
Failure to fi rmly install the unit may result in personal injury and property
damage if the unit falls.
Remote
control
Indoor unit
Reception range
(Side view) (Top view)
Reception range
* : Axial distance
: Pipe hole (ˇ 65 mm)
(Side piping)(Rear piping)
(Bottom piping)
(Unit : mm)
Floor
Wall
Remote control
Installation Plate
CAUTIONCAUTION
CAUTION
– 70 –
47
49
210
163
64
29
85
6 6
40
100
108
49
542 58
4085
112
148
R45
120
10-3-3. How to Install Indoor Unit
1. Remove the air inlet grille. Open the air inlet grille and remove the strap.
2. Remove the front panel (Remove the 4 screws).
NOTE
• The hole should be made at a slight downward slant on the outdoor side.
Shield pipe
Drain hose
Extension drain hose
Inside the room
2. Put water in the drain pan and make sure that the water is drained out of
doors.
3. When connecting extension drain hose, insulate the connecting part of
extension drain hose with shield pipe.
Arrange the drain pipe for proper drainage from the unit.
Improper drainage can result in dew-dropping.
Front panel
Air inlet grille
Hook
Treatment of piping connection
1) Check the fl are nut connections for the gas leak with a gas leak detector
or soap water.
2) To prevent gap in slit, fasten top and bottom with tape.
3) Slit is covered with tape.
4) Fasten with supplied Insulate sheet to prevent gap on the top of slit.
Gas leak check Tape
Slit
8 Insulation sheet
Do not rise the
drain hose.
Do not form the
drain hose into
a wavy shape.
Do not put the
drain hose end
into water.
Do not put the
drain hose end in
the drainage ditch.
Drainage
1. Run the drain hose sloped downwards.
Wiring connection
Wiring of the connection cable is necessary to remove the front panel.
1. Remove the terminal cover and cord clamp.
2. Insert the connecting cable (according to the local rule) into the pipe hole
on the wall.
3. Take out the connecting cable through the cable slot on the rear panel so
that it protrudes about 50 cm from the front.
4. Insert the connecting cable fully into the terminal block and secure it
tightly with screws.
5. Tightening torque : 1.2 N·m (0.12 kgf·m)
6. Secure the connecting cable with the cord clamp.
7. Fix the terminal cover, install the front panel and grille inlet.
• Be sure to refer to the wiring system diagram labeled inside the front
panel.
• Check local electrical cords and also any specifi c wiring instructions or
limitations.
110 mm
20 mm
10 mm
50 mm
NOTE
• Use stranded wire only.
• Wire type : H07RN-F or 60245 IEC66 (1.0 mm2 or more)
Stripping length of the connecting cable
Terminal
block
Earth line
Screw
Cord clamp
Earth screw
Earth line
Screw
Terminal cover
Hook
Layout of connection piping
Connection piping
430 mm
Tape
CAUTION
CAUTION
– 71 –
(700)
(600)
272
560
670
240 340
10-3-4. Concealed Installation
The special method to install the indoor unit bury in the wall is shown here.
Please make sure to change to wall burying mode.
1. To switch to the wall burying mode
To switch to the wall burying mode, press and hold AIR OUTLET
SELECT button for 20 seconds.
- When the operation set up and 5 beep sounds. Then indication at
Temperature indicator will light up for 5 seconds.
- To cancel, press AIR OUTLET SELECT button for 20 seconds then, 5
beep sounds. Then indication at Temperature indicator will blinks for 5
seconds.
- To prevent dewfall, above plate angle should be narrow.
3. Installation using the supporting plate
• To install into the existing wall hole, if it is impossible to keep 20-30 mm
of depth, use the supporting plate for securing the distance.
• Arrange the screw positions and supporting plate as shown in the
fi gure.
• Be sure to switch to wall burying mode.
(Rear screws potion)
(Field supply)
: Screw holes
(Field supply)
(Unit : mm)
Wall burying mode
For prevent dewfall
2. Wall hole size
Wall hole size should be enough to keep the distance with indoor unit as
shown in the following fi gure.
50 or more Indoor unit 50 or more
(Front view)
70 or more
800 or more
Wall
Floor
670 or more
2
0 to 30
240 to 250
Floor
Wall
(Side view)(Unit : mm)
4. In case of lattice establishment
• Follow the following fi gure, make sure to keep enough distance
between lattice, frame and wall.
• Be sure to switch to wall burying mode.
• The lattice should be make of wood.
• Between the air inlet and outlet, should be devided with partition board.
• Be sure to establish the open part for RECEIVER.
• The open part of lattice must be opens 70 % or more of the wall hole.
• The open part of lattice must be arranged uniformly.
(Top view)
Partition board
(Unit : mm)
(Side view)
NOTE
• In case the plinth is fi xed to the wall, please make sure to cut out the slit
on the left and right side of the main part.
Mounting directly on the floor
1) Fix the leg of indoor unit on the fl oor with 2 mounting screws.
2) Fix the upper part of indoor unit on the wall with 4 mounting screws.
Cut dot-line area
Slit
6 screw
(M4 x 25L)
Installation on the wall
1) Fix the installation plate on the wall with 4 mounting screws.
2) Hook the indoor unit on the installation plate.
3) Fix the upper part of indoor unit on the wall with 4 mounting screws.
(Floor installation)
Make sure to fi x it at a designated position with the screws.
Failure may result the damage of piping by the turning over of a set.
(Wall installation)
230
150
10
15
15
40
288
670
1000 mm or less
4 screw
(M4 x 25L)
4 screw
(M4 x 25L)
CAUTION
A
BC
500 140
(Side view)
Partition board
20 to 30
Opening for receiver
(Front view)
800 or more
670 or more
Partition board
Opening for receiver
50 or more 50 or more
70 or more
10-4. OUTDOOR UNIT
10-4-1. Installation Place
• A place which provides enough spaces around the outdoor unit as shown
in the diagram.
• A place which can bear the weight of the outdoor unit and does not allow
an increase in noise level and vibration.
• A place where the operation noise and discharged air do not disturb your
neighbors.
• A place which is not exposed to a strong wind.
• A place free of a leakage of combustible gases.
• A place which does not block a passage.
• When the outdoor unit is to be installed in an elevated position, be sure to
secure its feet.
• An all owable length and height, please refer from
• A place where the drain water does not cause any problems.
1. Install the outdoor unit in a location where there are no obstructions
near its air intake or air outlet.
2. When the outdoor unit is installed in a place that is always exposed to
strong winds like on the coast or on a high story of a building, secure
the normal fan operation using a duct or a wind shield.
3. Especially in windy areas, install the unit to prevent the admission of
wind.
4. Installation in the following places may result in trouble.
Do not install the unit in such places.
• A place full of machine oil.
• A saline-place such as the coast.
• A place full of sulfi de gas.
• A place where high-frequency
waves are likely to be generated,
such as from audio equipment, welders, and medical equipment.
Strong
wind
Snow protection plate
Snow protection hood
At least 50 cm
Snow accumulation line
Holding frame
Front
Anchor bolts
Install at least 50 cm
above the snow
accumulation line.
• Do not use the supplied drain nipple for draining water. Drain the water from
all the drain holes directly.
• To protect the outdoor unit from snow accumulation, install a holding frame,
and attach a snow protection hood and plate.
* Do not use a double-stacked design.
10-4-2. Precautions about Installation in Regions
with Snowfall and Cold Temperatures
• When using a multi-system outdoor unit refer to the installation manual
provided with the model concerned.
10-4-4. Refrigerant Piping Connection
Flaring
1. Cut the pipe with a pipe cutter.
2. Deburr the inside of the pipe at its end.
Take steps to ensure that the removed burrs will not enter the pipe.
3. Remove the fl are nuts provided with the indoor and outdoor units, and
insert them into the pipe.
4. Flare the pipe.
The projection margin of the pipe must be checked.
5. Check that the ß are has the appropriate shape.
90 Obliquity Roughness Warp
Pipe
Die
• If it is necessary to drain off the water from the outdoor unit, install two
water-proofl ng rubber caps and a drain nipple.
10-4-3. Draining off the Water from the Outdoor Unit
Pipe A B Flare Nut
Outside
diameter Thickness
Rigid
(clutch type)
R410A tool
Imperial
(wing nut
type)
R410A tool
C Tighten torque
mm mm mm mm mm mm N·m kgf·m
6.35 0.8 0 to 0.5 1.5 to 2.0 9.1 17 14 to 18 1.4 to 1.8
9.52 0.8 0 to 0.5 1.5 to 2.0 13.2 22 33 to 42 3.3 to 4.2
12.7 0.8 0 to 0.5 2.0 to 2.5 16.6 26 50 to 62 5.0 to 6.2
Water-proof rubber caps
(supplied with the outdoor unit)
Drain nipple
Base plate
CAUTION
–72 –
1. SPECIFICATIONS.
Model RAS-B10UFV-E1 RAS-B13UFV-E1 RAS-B18UFV-E1
Power source 220-240V ~ 50Hz
220-230V ~ 60Hz
220-240V ~ 50Hz
220-230V ~ 60Hz
220-240V ~ 50Hz
220-230V ~ 60Hz
Maximum running
current 7.5A8.5A12.0A
Plug socket & fuse
rating
Power cord
Connecting cable
11A
H07RN-F or 60245 IEC66 (1.5 mm2 or more)
H07RN-F or 60245 IEC66 (1.0 mm2 or more)
10-4-6. Wiring Connection
1. Remove the valve cover, the electric parts cover and the cord clamp from
the outdoor unit.
2. Connect the connecting cable to the terminal as identifi ed by the matching
numbers on the terminal block of indoor and outdoor unit.
3. Insert the power cord and the connecting cable fully into the terminal
block and secure it tightly with screws.
4. Use vinyl tape, etc. to insulate the cords which are not going to be used.
Locate them so that they do not touch any electrical or metal parts.
5. Secure the power cord and the connecting cable with the cord clamp.
6. Attach the electric parts cover and the valve cover on the outdoor unit.
10-4-7. Electrical Work
1. The supply voltage must be the same as the rated voltage of the air
conditioner.
2. Prepare the power source for exclusive use with the air conditioner.
Packed valve handling precautions
•Open the valve stem until it touches the stopper. Once it is in contact with
the stopper, refrain from applying any more force than is necessary.
•Securely tighten the valve stem cap with torque in the following table:
10-4-5. Evacuating
After the piping has been connected to the indoor unit, you can perform
vacuuming together at once.
Using a vacuum pump
Be sure to use a vacuum pump with counter-fl ow prevention function so
that inside oil of the pump does not fl ow backward into pipes of the air
conditioner when the pump stops.
(If oil inside of the vacuum pump enters the air conditioner, which use
R410A, refrigeration cycle trouble may happen.)
1. Connect the charge hose from the manifold valve to the service port of the
packed valve at gas side.
2. Connect the charge hose to the port of the vacuum pump.
3. Open fully the low pressure side handle of the gauge manifold valve.
4. Operate the vacuum pump to start evacuating. Perform evacuating for
about 15 minutes if the piping length is 20 meters
(15 minutes for 20
meters) (assuming a pump capacity of 27 liters per minute). Then conÞ rm
that the compound pressure gauge reading is -101 kPa (-76 cmHg).
5. Close the low pressure side valve handle of the gauge manifold valve.
6. Open fully the valve stem of the packed valves (both gas and liquid
sides).
7. Remove the charging hose from the service port.
8. Securely tighten the caps on the packed valves.
VACUUMING
Evacuate the air in the connecting pipes and in the indoor unit using a
vacuum pump. Do not use the refrigerant in the outdoor unit. For details,
see the manual of the vacuum pump.
•Tightening torque for connection of flare pipe -
The pressure of R410A is higher than R22
(Approx. 1.6 times). Therefore securely
tighten the fl are pipes which connect the
outdoor unit and the indoor unit with the
speciÞ ed tightening torque using a torque
wrench. If any fl are pipe is incorrectly
connected, it may cause not only
a gas leakage but also trouble in the
refrigeration cycle.
Flare at
indoor unit side
Flare at
outdoor unit side
Pressure gauge
Manifold valve
Ð101 kPa (-76 cmHg)
Handle Lo
Connecting pipe
Compound pressure gauge
Vacuum
pump
Handle Hi
(Keep full closed)
Charge hose
(For R410A only)
Vacuum pump adapter for
counter-ß ow prevention
(For R410A only)
Service port (Valve core (Setting pin))
Packed valve at liquid side
Packed valve at gas side
Charge hose
(For R410A only)
•KEEP IMPORTANT 5 POINTS FOR PIPING WORK.
(1) Take away dust and moisture (inside of the connecting pipes).
(2) Tighten the connections (between pipes and unit).
(3) Evacuate the air in the connecting pipes using a VACUUM PUMP.
(4) Check gas leak (connected points).
(5) Be sure to fully open the packed valves before operation.
∗When using a multi-system outdoor unit is used, refer to the installation
manual provided with the model concerned.
Stripping length of the connecting cable
•Wrong wiring connection may cause some electrical parts burn out.
•Be sure to comply with local rule on running the wire from indoor unit
to outdoor unit (size of wire and wiring method, etc.).
•Every wire must be connected fi rmly.
•If incorrect or incomplete wiring is carried out, it will cause an ignition
or smoke.
•Prepare the power supply for exclusive use with the air conditioner.
•This product can be connected to the mains.
Connection to fi xed wiring : A switch which disconnects all poles and
has a contact separation of at least 3 mm must be incorporated in the
fi xed wiring.
EN
CAUTION
CAUTION
–73 –
10A16A
10
30 30
40 40
10
10
10
LN
123
Connecting cable Power cord Connecting cable Power cord
Terminal
block
Earth line
Pipe size of Packed Valve Size of Hexagon wrench
12.70 mm and smallers A = 4 mm
15.88 mm A = 5 mm
Cap Torque
Cap Size (H)
Valve Rod
Cap
Service
Port Cap
H17 - H19
H22 - H30
H14
H17
14~18 N.m
(1.4 to 1.8 kgf·m)
33~42 N.m
(3.3 to 4.2 kgf·m)
8~12 N.m
(0.8 to 1.2 kgf·m)
14~18 N.m
(1.4 to 1.8 kgf·m)
A
H
Hexagon wrench
is required.
Service Port Cap
Valve Rod Cap
•Check the fl are nut
connections for the gas
leak with a gas leak
detector or soap water.
10-5-1. Gas Leak Test
Check places for fl are nut connection
(Indoor unit)
Check places for the outdoor unit.
Valve cover
Remote control selector switch
•When two indoor units are installed in the same room or adjacent two
rooms, if operating a unit, two units may receive the remote control
signal simultaneously and operate. In this case, the operation can
be preserved by setting either one indoor unit or remote control to B
setting (Both are set to A setting in factory shipment).
•The remote control signal is not received when the settings of indoor
unit and remote control are different.
•There is no relation between A setting/B setting and A room/B room
when connecting the piping and cables.
When two indoor units are installed in the separated rooms, it is not
necessary to change the selector switches.
10-5-2. Setting of Remote Control
Selector Switch
"B" Display
"00" Display
PRESET FAN
10-5-3. Remote Control A-B Selection
To separate using of remote control for each indoor unit in case of 2 air
conditioners are installed nearly.
Remote Control B Setup.
1. Push and hold button on the Remote Control by the tip of the pencil.
"00" will be shown on the display.
2. Press during pushing . "B" will show on the display and "00" will
disappear and the air conditioner will turn OFF. The Remote Control B is
memorized.
Note : 1. Repeat above step to reset Remote Control to be A.
2. Remote Control A has not "A" display.
3. Default setting of Remote Control from factory is A.
Unit B setup.
Press and hold MODE button for more than 20 seconds.
When A setup changed to B setup : 5 beeps will sound and operation
lamp blinks for 5 seconds.
When B setup changed to A setup : 5 beep will sound.
OTHERS
10-5. OTHERS
10-5-4. Test Operation
10-5-5. Auto Restart Setting
How to set the Auto Restart
1.
Press and hold
OPERATION
button on the indoor unit for 3 seconds to set
the operation (3 beep sound and OPERATION lamp blink 5 time/sec for 5
seconds).
2. Press and hold
OPERATION
button on the indoor unit for 3 seconds to
cancel the operation (3 beep sound but OPERATION lamp does not blink).
•
In case of ON timer or OFF timer are set, it dose not activate.
This product is designed so that, after a power failure, it can restart
automatically in the same operating mode as before the power failure.
To switch the TEST RUN (COOL) mode, press OPERATION button for 10
seconds (The beeper will make a short beep).
Information
The product are shipped with Auto Restart function in the off position.
Turn it on as required.
–74 –
–75 –
11. HOW TO DIAGNOSE THE TROUBLE
The pulse motor circuits are mounted to both indoor and outdoor units. Therefore, diagnose troubles according
to the trouble diagnosis procedure as described below. (Refer to the check points in servicing written on the
wiring diagrams attached to the indoor/outdoor units.)
Table 11-1
KPrecautions when handling the new inverter
CAUTION: HIGH VOLTAGEN
The high voltage circuit is incorporated.
Be careful to do the check service, as the electric shock may be caused in case of touching parts on the
P.C. board by hand.
The new inverter will be incorporated starting with this unit.
KThe control circuitry has an uninsulated construction.
No.
1
2
3
4
5
Troubleshooting Procedure
First Confirmation
Primary Judgment
Judgment by Flashing LED of Indoor Unit
Self-Diagnosis by Remote Controller
Judgment of Trouble by Every Symptom
No.
6
7
8
9
Troubleshooting Procedure
Check Code 1C and 1E
How to Diagnose Trouble in Outdoor Unit
How to Check Simply the Main Parts
How to Simply Judge Whether Outdoor
Fan Motor is Good or Bad
Fig. 11-1
RAS-18N3AV2-E
RAS-10N3AV2-E1
RAS-13N3AV2-E1
IGBT × 6
FET × 6
MCU
Compressor
Fan motor
Shared potential
Driver
Driver
Amplifier
Amplifier
Fig. 11-2
–76 –
CAUTION
A high voltage (equivalent to the supply voltage) is also energized to ground through the
sensors, PMV and other low-voltage circuits. The sensor leads and other wires are covered
with insulated tubes for protection. Nevertheless, care must be taken to ensure that these
wires are not pinched.
Take sufficient care to avoid directly touching any of the circuit parts without first turning off
the power.
At times such as when the circuit board is to be replaced, place the circuit board assembly in
a vertical position.
Laying the board flat on an electrically conductive object (such as the top panel of the air conditioner's
outdoor unit) while a charge is still retained by the electrolytic capacitors of the inverter's main circuit may
cause short-circuiting between the electrolytic capacitors and secondary circuit components and result in
damage to the components.
Do NOT lay the circuit board assembly flat.
KPrecautions when inspecting the control section of the outdoor unit
NOTE :
A large-capacity electrolytic capacitor is used in the outdoor unit controller (inverter). Therefore, if the power
supply is turned off, charge (charging voltage DC280 to 380V) remains and discharging takes a lot of time.
After turning off the power source, if touching the charging section before discharging, an electrical shock may
be caused. Discharge the electrolytic capacitor completely by using soldering iron, etc.
< Discharging method for RAS-10/13N3AV2-E1>
1. Remove the inverter cover (plating) by opening four mounting claws.
2. As shown below, connect the discharge resistance (approx. 100Ω40W) or plug of the soldering iron to
voltage between + – terminals of the electrolytic capacitor (500µF/400V or 760µF/400V) on P.C.
board ("WARNING ELECTRIC SHOCK" is indicated.) and then perform discharging.
Fig. 11-3
Inverter cover
P. C. board
(Soldered surface)
Fig. 11-4
SENSOR LEAD RAS-10/13N3AV2-E1 RAS-18N3AV2-E
–77 –
Fig. 11-5
Discharging position
(Discharging period
10 seconds or more)
Plug of
soldering iron
< Discharging method for RAS-18N3AV2-E>
1. Remove the inverter cover (plating) by opening four mounting claws.
2. As shown below, connect the discharge resistance (approx. 100. 40W) or plug of the soldering iron to
voltage between + – terminals of the electrolytic capacitor (500µF/400V or 760µF/400V) on P.C.
board ("WARNING ELECTRIC SHOCK" is indicated.) and then perform discharging.
–78 –
11-1. First Confirmation
11-1-1. Confirmation of Power Supply
Confirm that the power breaker operates (ON) normally.
11-1-2. Confirmation of Power Voltag e
Confirm that power voltage is AC 220–230–240 ± 10%.
If power voltage is not in this range, the unit may not operate normally.
11-1-3. Operation Which is not a Trouble (Program Operation)
For controlling the air conditioner, the program operations are built in the microcomputer as described in the
following table.
If a claim is made for running operation, check whether or not it meets to the contents in the following table.
When it does, we inform you that it is not trouble of equipment, but it is indispensable for controlling and main-
taining of air conditioner.
Ta b le 11-1-1
No.
1
2
3
4
5
6
Operation of air conditioner
When power breaker is turned “ON”, the
operation indicator (Green) of the indoor
unit flashes.
Compressor may not operate even if the
room temperature is within range of
compressor-ON.
In Dry and ECO mode, FAN (air flow)
display does not change even though FAN
(air flow select) button is operated.
Increasing of compressor motor speed
stops approx. 30 seconds after operation
started, and then compressor motor speed
increases again approx. 30 seconds after.
In AUTO mode, the operation mode is
changed.
In HEAT mode, the compressor motor
speed does not increase up to the maxi-
mum speed or decreases before the
temperature arrives at the set temperature.
Description
The operation indicator of the indoor unit flashes when
power source is turned on. If [START/STOP] button is
operated once, flashing stops.
(Flashes also in power failure)
The compressor does not operate while compressor
restart delay timer (3-minutes timer) operates.
The same phenomenon is found after power source has
been turned on because 3-minutes timer operates.
The air flow indication is fixed to [AUTO].
For smooth operation of the compressor, the compres-
sor motor speed is restricted to Max. 41 rps for 2 min-
utes, and Max.91 rps for 2 minutes to 3 minutes, respec-
tively after the operation has started.
After selecting Cool or Heat mode, select an operation
mode again if the compressor keeps stop status for 15
minutes.
The compressor motor speed may decrease by high-
temp. release control (Release protective operation by
temp.-up of the indoor heat exchanger) or current
release control.
–79 –
11-2. Primary Judgment
To diagnose the troubles, use the following methods.
1) Judgment by flashing LED of indoor unit
2) Self-diagnosis by service check remote controller
3) Judgment of trouble by every symptom
Firstly use the method 1) for diagnosis. Then, use the method 2) or 3) to diagnose the details of troubles.
11-3. Judgment by Flashing LED of Indoor Unit
While the indoor unit monitors the operation status of the air conditioner, if the protective circuit operates, the
contents of self-diagnosis are displayed with block on the indoor unit indication section.
Ta b le 11-3-1
NOTES :
1. The contents of items B and C and a part of item E are displayed when air conditioner operates.
2. When item B and C, and item B and a part of item E occur concurrently, priority is given to the block of item B.
3. The check codes can be confirmed on the remote controller for servicing.
OPERATION (Green)
Flashing display (1 Hz)
OPERATION (Green)
TIMER (Yellow)
FILTER (Orange)
Flashing display (5 Hz)
OPERATION (Green)
FILTER (Orange)
Flashing display (5 Hz)
OPERATION (Green)
TIMER (Yellow)
Flashing display (5 Hz)
OPERATION (Green)
Flashing display (5 Hz) Protective circuit operation for indoor P.C. board
Protective circuit operation for connecting cable
and serial signal system
Protective circuit operation for outdoor P.C. board
Protective circuit operation for others
(including compressor)
Power failure (when power is ON)
Indoor indication
lamp flashes.
Which lamp
does flash?
Item
A
B
C
D
E
Check
code Block display Description for self-diagnosis
–80 –
11-4. Self-Diagnosis by Remote Controller (Check Code)
1. If the lamps are indicated as shown B to E in Table 11-3-1, execute the self-diagnosis by the remote controller.
2. When the remote controller is set to the service mode, the indoor controller diagnoses the operation condi-
tion and indicates the information of the self-diagnosis on the display of the remote controller with the check
codes. If a fault is detected, all lamps on the indoor unit will flash at 5Hz and it will beep for 10 seconds
(Beep, Beep, Beep ... ). The timer lamp usually flashes (5Hz) during self-diagnosis.
11-4-1. How to Use Remote Controller in Service Mode
TEMP
Press [CHECK] button with a tip of pencil to set the
remote controller to the service mode.
• “ ” is indicated on the display of the remote
controller.
Press [ON ] or [OFF ] button
If there is no fault with a code, the indoor unit will beep
once (Beep) and the display of the remote controller will
change as follows :
• The TIMER indicator of the indoor unit flashes continuously.
(5 times per 1 sec.)
• Check the unit with all 52 check codes ( to )
as shown in Table-11-4-1.
• Press [ON ] or [OFF ] button to change the check
code backward.
If there is a fault, the indoor unit will beep for 10
seconds (Beep, Beep, Beep...).
Note the check code on the display of the remote
controller.
• 2-digits alphanumeric will be indicated on the display.
• All indicators on the indoor unit will flash.
(5 times per 1 sec.)
1
2
3
4
Alphanumeric characters are
used for the check codes.
is 5. is 6.
is A. is B.
is C. is D.
• • •
Fig. 11-4-1
AUT O
AUTO
FIX
PRESET
ONE-TOUCH
SWING
FLOOR TIMER
ON
FILTER
CHK
CLOCK
OFF
SLEEP
SET
CLR
Hi-POWER ECO
QUIET COMFORT
SLEEP
MODE
TEMP
FAN
Press [ ] button to release the service mode.
• The display of the remote controller returns to as it
was before service mode was engaged.
Press [CLR] button. After service finish for clear
service code in memory.
• "7F" is indicated on the display of the remote
control.
11-4-2 Caution at Servicing
1. After using the service mode of remote controller finished, press the [ ] button to reset the remote controller to
normal function.
2. After finished the diagnosis by the remote controller, turn OFF power supply and turn its ON again to reset the air
conditioner to normal operation. However, the check codes are not deleted from memory of the microcomputer.
3. After servicing finished, press [CLR] button of remote controller under service mode status to send code "7F" to the
indoor unit. The check code stored in memory is cleared.
Table 11-4-1
Block distinction Operation of diagnosis function
Check
code Block Check
code Cause of operation
Air
conditioner
status
Display flashing
error
Indoor P.C. TA sensor ; The room Operation Flashes when 1. Check the sensor TA and connection.
board. temperature sensor is continues. error is detected. 2. In case of the sensor and its
short-Circuit or disconnection. connection is normal, check the
P.C. board.
TC sensor ; The heat Operation Flashes when 1. Check the sensor TC and connection.
exchanger temperature continues. error is detected. 2. In case of the sensor and its
sensor of the indoor unit connection is normal, check the
is out of place, disconnection, P.C. board.
short-circuit or migration.
Fan motor of the indoor unit All OFF Flashes when 1. Check the fan motor and connection.
is failure, lock-rotor, short- error is detected. 2. In case of the motor and its
circuit, disconnection, etc. connection is normal, check the
Or its circuit on P.C. board P.C. board.
has problem.
Other trouble on the indoor Depend on Depend on Replace P.C. board.
P.C. board. cause of cause of
failure. failure.
Action and Judgment
–81–
Block distinction Operation of diagnosis function
Check
code Block Check
code Cause of operation
Air
conditioner
status
Display flashing
error
Serial signal 1) Defective wiring of the Indoor unit Flashes when 1) to 3) The outdoor unit never
and connecting connecting cable or operates error is detected. operate.
cable. miss-wiring. continue. Flashing stop Check connecting cable and correct
2) Operation signal has not Outdoor unit and outdoor unit if defective wiring.
send from the indoor unit stop. start to operate Check 25A fuse of inverter P.C. board.
when operation start. when the return Check 3.15A fuse of inverter
3) Outdoor unit has not signal from the P.C. board.
send return signal to the outdoor unit is Check operation signal of the indoor
indoor unit when operation normal. unit by using diode. Measure voltage
started. at terminal block of the indoor unit
4) Return signal from the between No.2 and No.3 (or L2 and S)
outdoor unit is stop during If signal is varied 15-60V continuously,
operation. replace inverter P.C. board.
Some protector If signal is not varied, replace indoor
(hardware, if exist) of the P.C. board.
outdoor unit open 4) The outdoor unit abnormal stop at
circuit of signal. some time.
Signal circuit of indoor If the other check codes are found
P.C. board or outdoor concurrently, check them together.
P.C. board is failure Check protector (hardware) such
in some period. as Hi-Pressure switch,
Thermal-Relay, etc.
Check refrigerant amount or any
possibility case which may caused
high temperature or high pressure.
Check operation signal of the indoor
unit by using diode. Measure voltage
at terminal block of the indoor unit
between No.2 and No.3 (or L2 and S)
If signal is varied 15-60V continuously,
replace inverter P.C. board.
If signal is not varied, replace indoor
P.C. board.
Action and Judgment
* Signal send only 1 minute and stop. Because of return signal from outdoor unit has not received.
** Signal resend again after 3 minutes stop. And the signal will send continuously.
** * 1 minute after resending, the indoor unit display flashes error.
VDC
Time (Min)
034 78
15
60
Measured signal voltage by apply diode
3 minutes Delay, start
counting from power
supply ON or remote
OFF.
3 minutes stop
***
***
Sending signal of the indoor unit when have not return
signal from the outdoor unit.
Voltage variation stop
or have not voltage
output.
Note : Operation signal of the indoor unit shall be measured in the sending period as
picture below.
–82 –
Block distinction Operation of diagnosis function
Check
code Block Check
code Cause of operation
Air
conditioner
status
Display flashing
error
Outdoor P.C. Current on inverter circuit All OFF Flashes after 1. Remove connecting lead wire of the
board is over limit in short time. error is detected compressor, and operate again.
8 times*. 2. If outdoor fan does not operate or
operate but stop after some period,
replace the inverter P.C. board.
3. If outdoor fan operates normally,
Inverter P.C. board is
failure, IPM shortage, etc.
Compressor current is
higher than limitation,
lock rotor, etc. measure 3-Phase output of inverter
P.C. board (150-270VAC) at the
connecting lead wire of compressor.
4. If 3-Phase output is abnormal, replace
inverter P.C.Board.
5. If 3-Phase output is normal, replace
compressor. (lock rotor, etc.)
Compressor position-detect All OFF Flashes after 1. Remove connecting lead wire of the
circuit error or short-circuit error is detected compressor, and operate again.
between winding of 8 times*. 2. If outdoor fan does not operate or
compressor. operation but stop after some period,
replace the inverter P.C. board.
3. If outdoor fan operates normally,
measure resistance of compressor
winding. If circuit is shortage, replace
the compressor.
Current-detect circuit of All OFF Flashes after Even if trying to operate again, all
inverter P.C. board error. error is detected operations stop, replace inverter
4 times*. P.C. board.
TE sensor ; The heat All OFF Flashes after 1. Check sensors TE, TS and connection.
exchanger temperature error is detected 2. In case of the sensors and its
sensor of the outdoor unit 4 times*. connection is normal, check the
either TS sensor ; Suction inverter P.C. board.
pipe temperature sensor,
out of place, disconnection
or shortage.
TD sensor ; Discharge pipe All OFF Flashes after 1. Check sensors TD and connection.
temperature sensor is error is detected 2. In case of the sensor and its
disconnection or shortage. 4 times*. connection is normal, check the
inverter P.C. board.
Outdoor fan failure or its All OFF Flashes after 1. Check the motor, measure winding
drive-circuit on the inverter error is detected resistance, shortage or lock rotor.
P.C. board failure. 8 times*. 2. Check the inverter P.C. board.
TO sensor ; The outdoor Operation Record error 1. Check sensors TO and connection.
temperature sensor is continues. after detected 2. In case of the sensor and its
disconnection or shortage. 4 times*. connection is normal, check the
But does not inverter P.C. board.
flash display.
Action and Judgment
–83 –
Block distinction Operation of diagnosis function
Check
code Block Check
code Cause of operation
Air
conditioner
status
Display flashing
error
Compressor drive output error. All OFF Flashes after 1. Check installation conditions such as
(Relation of voltage, current error is detected packed valve opening, refrigerant
and frequency is abnormal) 8 times*. amount and power supply (rate +10%,
Overloading operation of both of operation and non operation
compressor caused by condition).
over-charge refrigerant, 2. Check P.M.V. by measure the
P.M.V. failure, etc. resistance of the coil and confirm its
Compressor failure (High operation (sound of initial
current). operation, etc.)
3. Observe any possibility cause which
may affect operation load of
compressor.
4. Operate again. If compressor
operation is failure when 20 seconds
passed (count time from operation
starting of compressor), replace
compressor.
*4 or 8 times ; When first error is detected, error is count as 1 time, then once operation is stop and re-started.
After re-starting operation within 6 minutes, if same error is detected, error count is add (count become 2 times)
When error count comes 4 or 8 times, record error to check code. But after re-starting operation, if no error is
detected and air conditioner can operate more than 6 minutes, error count is cleared.
The others Return signal of the outdoor Indoor unit Flashes when 1. Check power supply (Rate + 10%)
(including unit has been sent when operates error is detected. 2. If the air conditioner repeat operates
compressor) operation start. But after continue. Flashing stop and stop with interval of approx. 10
that, signal is stop some time. Outdoor unit and outdoor unit to 40 minutes.
Instantaneous power stop. start to operate Check protector (hardware) such
failure. when the return as Hi-Pressure switch,
Some protector signal from the Thermal-Relay, etc.
(hardware) of the outdoor unit is Check refrigerant amount, packed
outdoor unit open normal. valve opening and any possibility
circuit of signal. cause which may affect high
Signal circuit of indoor temperature or high pressure.
P.C. board or outdoor 3. Check operation signal of the indoor
P.C. board is failure unit by using diode. Measure voltage
in some period. at terminal block of the indoor unit
between No.2 and No.3 (or L2 and S)
If signal is varied 15-60V continuously,
replace inverter P.C. board.
If signal is not varied, replace indoor
P.C. board.
Action and Judgment
–84 –
Block distinction Operation of diagnosis function
Check
code Block Check
code Cause of operation
Air
conditioner
status
Display
flashing error
Compressor does not rotate. All OFF Flashes after 1. Remove connecting lead wire of the
Because of missed wiring, error is detected compressor, and operate again.
missed phase or shortage. 8 times*. 2. If outdoor fan does not operate or
operation but stop after some period,
replace the inverter P.C. board.
3. If outdoor fan operates normally,
measure 3-Phase output of inverter
P.C. board (150-270VAC) at the
connecting lead wire of compressor.
4. If 3-Phase output is abnormal, replace
inverter P.C.Board.
5. If 3-Phase output is normal, measure
resistance of compressor winding.
6. If winding is shortage, replace the
compressor.
Discharge temperature All OFF Flashes after 1. Check sensors TD.
exceeded 117oC. error is detected 2. Check refrigerant amount.
4 times*. 3. Check P.M.V. by measure the
resistance of the coil and confirm its
operation (sound of initial
operation, etc.)
4. Observe any possibility cause which
may affect high temperature of
compressor.
Compressor is high current All OFF Flashes after 1. Check installation conditions such as
though operation Hz is error is detected packed valve opening, refrigerant
decreased to minimum limit. 8 times*. amount and power supply (rate +10%,
Installation problem. both of operation and non operation
Instantaneous power condition).
failure. 2. Check P.M.V. by measure the
Refrigeration cycle resistance of the coil and confirm its
problem. operation (sound of initial
Compressor break down. operation, etc.)
3. Observe any possibility cause which
may affect high current of compressor.
4. If 1, 2 and 3 are normal, replace
compressor.
Action and Judgment
–85 –
Compressor failure (High
current).operation, etc.)
–86 –
Block distinction Operation of diagnosis function
Check
code Block Check
code Cause of operation
Air
conditioner
status
Display
flashing error
Action and Judgment
Indoor unit Flashes when 1.
. Check power supply (Rate +10%)
operates error is detected 2.
continue.
Flashing stop
Return signal of the outdoor
unit has been sent when
operation start. But after
that, signal is stop some time.
Outdoor unit
and outdoor unit
stop.
start to operate
when the return
signal from the
outdoor unit is
normal.
. If the air conditioner repeat operat
and stop with interval of approx. 10
to 40 minutes.
Check protector (hardware) such
as Hi-Pressure switch,
Thermal-Relay, etc.
Check refrigerant amount, packed
valve opening and any possibility
cause which may affect high
temperature or high pressure.
3.
. Check operation signal of the indo
unit by using diode. Measure voltage
at terminal block of the indoor unit
between No.2 and No.3 (or L2 and S)
If signal is varied 15-60V continuously,
replace inverter P.C. board.
If signal is not varied, replace indoor
P.C. board.
4.Check and clean heat exchanger
area Indoor and Outdoor unit.
Instantaneous power
failure.
Some protector
(hardware) of the
outdoor unit open circuit
of signal.
Signal circuit of indoor
P.C. board or outdoor
P.C. board is failure in
some period.
TE, TC high tmperature
TE for cooling operation
TC for heating operation.
11 times*.
*4, 8 or 11 times ; When first error is detected, error is count as 1 time, then once operation is stop and re-started.
After re-starting operation within 6 minutes, if same error is detected, error count is add (count become 2 times)
When error count comes 4, 8 or 11 times, record error to check code. But after re-starting operation, if no error
is detected and air conditioner can operate more than 6 minutes, error count is cleared.
–87 –
11-5. Judgment of Trouble by Every Symptom
11-5-1. Indoor Unit (Including Remote Controller)
(1) Power is not turned on (Does not operate entirely)
<Primary check>
1. Is the supply voltage normal?
2. Is the normal voltage provided to the outdoor unit?
3. Is the crossover cable connected properly?
4. Is the fuse (F01) blown?
•Be sure to disconnect the motor connector CN301 after shut off the power supply, or it will be a cause of
damage of the motor.
(2) Power is not turned on though Indoor P.C. board is replaced
<Confirmation procedure>
NO
Turn off power supply once, and
5 second later, turn it on again.
Is OPERATION indicator flashing?
Is it possible to turn on
power supply by pushing
[ ] button
on remote controller?
Is voltage
(DC12V or 7V or 5V)
indicated on rear of
indoor control
board normal?
Does transmission mark
on remote controller flash
normally,and is its signal
transmitted properly?
Is DC310–340V
supplied between
CN301 1 – 3 ?
Does fan
motor connector
between CN301 1 –
3 short-circuit?
Item by symptoms
Operation
Check Item
Considerable principle cause
Measures
Parts (R01, R02, DB01, C01, C03
IC101 and T101) are defective.
Remote controller is defective.
Refer to (5) “Troubleshooting
for remote controller”.
Parts of a power supply circuit
defective.
Unit operates normally.
Replace main
P.C. board
Replace fan
motor.
Is fuse (F01)
of indoor control
board blown?
Microcomputer
is defective.
NO NO
NO
NO NO
NO
YES
YES
YES
YES YES
YES YES
YES YES
NO NO
To item of
“Power supply is not turned on”.
Turn on power supply.
Does OPERATION indicator flash? Is wired correctly to white and
black lead wires of terminal block? Correct wiring.
–88 –
(3) Only the indoor motor fan does not operate
<Primary check>
1. Is it possible to detect the power supply voltage (AC220–240V) between
L
and
N
on the terminal block?
2. Does the indoor fan motor operate in cooling operation?
(In heating operation, the indoor fan motor does not operate for approximately 10 minutes after it is turned
on, to prevent a cold air from blowing in.)
AB
Start to operate
indoor unit in cooling
operation at airflow
level “LOW”.
Turn off indoor unit and
remove connector from motor.
Then start to operate indoor
unit with remote controller.
Turn off indoor unit and remove
connector from motor.
Then push [ ] button
on remote controller to stop
flashing lamp on indoor unit.
Change airflow level
to “HIGH”.
Start to operate the
indoor unit in except
heating operation.
At this time, is it possible
to detect DC 1V or more
between
5
+ and
3
–
of motor connector (CN301)?
(Check this condition
within 15 seconds after
starting unit.)
Start to operate the
indoor unit in except
heating operation.
At this time, is it possible to
detect DC 1V or more between
5
+ and
3
– of motor
connector (CN301)?
Is it possible to detect
DC 310–340V between
1
+ and
3
– of motor
connector (CN301).
(Motor connection condition)
Is it possible to detect DC 15V
between
4
+ and
3
– of
motor connector (CN301).
Is it possible to detect
DC 15V between
4
+
and
3
– of motor
connector (CN301).
Does indoor
fan operate?
Replace main
P.C. board.
YES
YES
YES
YES
YES
YES
NO
NO
NO
NO
NO
NO
Turn off power
supply once, and
turn it on again.
Is it possible to detect
DC 1V or more between
5
+ and
3
– of
motor connector (CN301).
Does fan motor
continue to operate?
Peplace indoor
fan motor.
YES
YES
NO
NO
Does check
operation LED flash?
Does check connecting
cable or power supply
cord complely?
Reconnecting the
interconnection cable
and terminal block
NO NO
YES
Does check
5V at display unit?
Replace
display unit
Does check 5V
at main P.C board?
NO
NO
YES
YES YES
Turn off indoor unit
and rotate cross-flow
fan by hand when the
unit is on standby.
At this time, is it possible to
detect DC 1V or more
between
5
+ and
3
–
of motor connector
(CN301).
Is it possible to
change airflow level
to “HIGH”?
Is it possible to
rotate cross-flow fan by
hand properly?
Fan motor
operates normally.
Replace bearing
of cross-flow fan.
YES
YES
YES
NO
NO
NO
Does check cross-flow
fan bearing normal
condition?
Replace indoor
fan motor.
Replace main
P.C. board.
Does check display
on remote show high?
Change the new PC
board. Does fan speed
change?
Replace
remote
Replace
motor
NO
NO
NO
YES
YES
YES
–
89 –
A
B
–90 –
Indoor fan starts rotating when power supply is turned on.
(Check output DC voltage of fan motor on P.C. board.)
Measure voltage between 3 (GND : BLACK)
and 5 (V line : YELLOW) of motor connector (CN301)
while indoor fan motor is rotating.
DC 1.0V or more
P.C. board is defective.
6 (Blue)
5 (Yellow)
4 (White)
3 (Black)
2 –
1 (Red)
Motor is defective.
Under DC 1.0V
CN31
Yellow
Black
P.C. board
DC
Replace P.C. board. Replace motor.
(4) Indoor fan motor automatically starts to rotate by turning on power supply
<Cause>
The IC is built in the indoor fan motor. Therefore the P.C. board is also mounted to inside of the motor.
If the P.C. board is soldered imperfectly or the IC is defective, the fan motor may automatically rotate by turning
on power supply.
<Inspection procedure>
1. Remove the front panel. (Remove 4 screws.)
2. Remove the cover of the indoor unit controller. (remove 1 screw.)
3. Check DC voltage with CN301 connector while the fan motor is rotating.
NOTE :
•Do not disconnect the connector while the fan motor is rotating.
•Use a thin test rod.
–91 –
NO
YES
Push the [ ] button.
Is transmission
mark indicated?
The unit does not beep at all.
Operation lamp on indoor
unit is not indicated.
NOTE : After replacing batteries,
push the RESET button
with a tip of a pencil.
Is receiver
on indoor unit
exposed to
direct sunlight?
Avoid direct
sunlight.
Is there any
thyristor
fluorescent light
nearby?
Keep indoor unit
away from thyristor
fluorescent light.
Does indoor unit
operate when moving
remote control
near receiver or
indoor unit?
Batteries are
exhausted.
Does radio sound
is affected by remote
controller when a signal is
transmitted at distance of
5 cm from radio?
Is transmission
mark indicated?
P.C. board
is defective.
Replace
P.C. board.
Replace
batteries.
Replace
remote controller.
Normal
operation
Remote controller
is defective.
NO
YES
NO
YES
NO
YES
NO
YES
NO
YES
NO
YES
NO
YES
Does indoor unit
start to operate by
automatic restart
function?
Push the [ ]
button
Does indoor unit
beep and operate?
Push RESET button
on remote controller
with tip of pencil.
(5) Troubleshooting for remote control
<Primary check>
Check that A or B selected on the main unit is matched with A or B selected on the remote control.
–92 –
Refer to the chart in 11-6.
Gas leak
P.M.V. is defective.
Miswiring of connecting wires of indoor/outdoor units
Clogging of pipe and coming-off of TC sensor
Gas circulation amount is down.
Measure gas pressure.
Gas shortage
Gas leak
Pipe clogging
Thermo. operation of compressor
Red
White
Terminal block
S5277G
Tester
3
2
1
Terminal block at indoor side
S5277G or equivalent (G or J type)
(Diode with rated voltage of 400V
or more is acceptable.)
To item of Outdoor unit does not operate.
11-5-2. Wiring Failure (Interconnecting and Serial Signal Wire)
(1) Outdoor unit does not operate
1) Is the voltage between
R
and
S
of the indoor terminal block varied?
Confirm that transmission from indoor unit to outdoor unit is correctly performed based upon the follow-
ing diagram.
NOTE:
•Measurement should be performed 2 minutes and 30 seconds after starting of the operation.
•Be sure to prepare a diode for judgment.
Normal time : Voltage swings between DC15 and 60V. ...................Inverter Assembly check (11-7-1.)
Abnormal time : Voltage does not vary.
(2) Outdoor unit stops in a little while after operation started
<Check procedure> Select phenomena described below.
1) The outdoor unit stops 10 to 20 minutes after operation started, and 10 minutes or more are required to
restart the unit.
2) If the unit stops once, it does not operate until the power will be turned on again.
3) The outdoor unit stops 10 minutes to 1 hour after operation started, and an alarm is displayed.
(Discharge temp. error check code 03, 1E Sensor temp. error check code 02, 1C)
–93 –
NO
NO
NO
NO
YES
YES
YES
YES
YES
Gas leakage,
disconnection of TS/TC
sensors (Check code 02, 1C)
Discharge temp. error,
gas leakage
(Check code 03, 1E)
1C 1E
Gas amount check and valve clogging check
Remove TC sensor connector from the P.C. board in indoor unit.
(Remove connector from the P.C. board.)
Operate the air conditioner in COOL mode by TEMP button
(“Beep” sound is heard if keeping pushed for 10 seconds.).
The operation enters temporary operation mode which fixes opening degree of compressor speed.
Check condensation at outlet of PMV, and then check operating pressure from the service port.
Valve drive check
Check the operating pressure from service port, and add gas if pressure is low.
Is connecter of coil connected to inverter?
Is coil of the pulse motor valve
(P.M.V.) correctly set?
Existence of condensation at outlet of P.M.V.
If there is condensation at outlet (1/4 inch=Ø6.35mm valve side),
the valve is clogged.
Are temp. sensors of indoor/outdoor units correctly set to the holder?
NOTE :
The temperature sensors which are used to control pulse motor valve
include indoor heat exchanger sensor (TC), outdoor heat exchanger temp.
sensor (TE), outdoor suction temp. sensor (TS) and outdoor sensor (TO).
Set it correctly.
Set it correctly.
Set it correctly.
Replace coil valve.
Replace valve.
Add gas.
Is positioning sound of valve (sound hitting to stopper) heard
from valve when the air conditioner starts the operation after turning off power
of the air conditioner once?
11-6. Check Code 1C (Miswiring in indoor/outdoor units) and 1E
<Check procedure>
11-7. How to Diagnose Trouble in Outdoor Unit
Turn ON the unit
by remote controller
and wait for 3 min.
Check component
parts of control board
assembly by visual.
(damage, burn,.. Etc.)
Check Power Supply
(Voltage Rate ±10%)
Replace
fuse.
NG
OK
OK
YES
Turn OFF power
supply.
Check 25A
fuse (F01)
Remove connector
of compressor.
Replace
control board.
Check terminal
Voltage of electrolytic
capacitor are in
(Voltage Rate
Turn ON power
Supply.
NG
±10%) x 1.414?
Replace
control board.
NO
(Cooling : 17°C)
•Connect discharge
resistance (approx. 100Ω,
40W) or soldering iron
(plug) between +, –
terminals of the electro-
lytic capacitor
(500µF or 760µF)
Discharging position
(Discharging period
10 seconds or more) Plug of
soldering
iron
A
–94 –
–95 –
YES
Does outdoor fan
operate normally?
Replace control
board.
YES
YES
Compressor
is normal
Check voltage of the
compressor connector
(AC150V-270V)?
Turn ON power
supply.
NO
Turn OFF power
supply.
Replace outdoor
fan motor.
NO
Replace
compressor.
Replace control
board.
Replace
compressor.
YES
Does compresser
operate normally?
Turn OFF power
supply.
Check compressor
winding resistance
correct?
is in rate.
A
NO
NO
YES
NO
Remove outdoor fan
connector.
Check winding resistance by
ohmmeter are correct?
Check rotor locking by rotate
with hand. Can it rotate?
–96 –
11-8. How to Check Simply the Main Parts
11-8-1. How to Check the P.C. Board (Indoor
Unit)(1) Operating precautions
1) When removing the front panel or the P.C. board, be sure to shut off the power supply breaker.
2) When removing the P.C. board, hold the edge of the P.C. board and do not apply force to the parts.
3) When connecting or disconnecting the connectors on the P.C. board, hold the whole housing. Do not pull
at the lead wire.
(2) Inspection procedures
1) When a P.C. board is judged to be defective, check for disconnection, burning, or discoloration of the
copper foil pattern or this P.C. board.
2) The P.C. board consists of the following 2 parts
a. Main P.C. board part :
DC power supply circuit, Indoor fan motor control circuit, CPU and peripheral circuits,
buzzer, and Driving circuit of louver.
b. Indication unit of infrared ray receiving infrared ray receiving circuit, LED :
To check defect of the P.C. board, follow the procedure described below.
–97 –
(3) Check procedures
1
2
3
4
5
6
7
Turn off the power supply breaker
and remove the P.C. board
assembly from electronic parts
base. Remove the connecting
cables from the terminal block.
Remove the connector of the
motor and turn on the power
supply breaker. If OPERATION
indicator flashes (once per
second), it is not necessary to
check steps (1 to 3) in the right
next column.
Push [ ] button once
to start the unit. (Do not set the
mode to On-Timer operation.)
Shorten the restart delay timer
and start unit.
Push [ ] button once
to start the unit,
•Shorten the restart delay timer.
•Set the operation mode to
COOL.
•Set the fan speed level to
AUTO.
•Set the preset temperature
much lower than the room
temperature. (The unit (com-
pressor) operates continuously
in the above condition.)
If the above condition (No. 5) still
continues, start the unit in the
following condition.
•Set the operation mode to
HEAT.
•Set the preset temperature
much higher than room tem-
perature.
Connect the motor connector to
the motor and turn on the power
supply.
Start the unit the following
condition.
•Set the fan speed level to HIGH.
(The unit (compressor) operates
continuously in the above
condition in No. 5.)
Check whether or not the fuse (F01)
is blown.
Check power supply voltage :
1. Between CN01 and No. 3 of CN301
(AC 220–240V)
2. Between and of C03
(DC 310–340V)
3. Between of IC122 and output
side of IC122 (DC15V)
Check power supply voltage :
1. Between CN01 and
CN501 (DC 15–60V)
Check whether or not all indicators
(OPERATION, TIMER, FILTER)
are lit for 3 seconds and they return
to normal 3 seconds later.
1. Check whether or not the com-
pressor operates.
2. Check whether or not the OP-
ERATION indicator flashes.
1. Check whether or not the com-
pressor operates.
2. Check whether or not the OP-
ERATION indicator flashes.
1. Check it is impossible to detect
the voltage (AC120V or higher
voltage) between red and black
2. The motor does not operate or
the fan motor does not rotate with
high speed.
(But it is possible to receive the
signal from the remote controller.)
3. The motor rotates but vibrates
Causes
Impulse voltage was applied or the
indoor fan motor short-circuited.
1. The terminal block or the crossover
cable is connected wrongly.
2. The fuse (F01), line filter
(L01), resistor (R02), of the diode
(DB01) is defective.
3. TC122 and T101 are defective.
4. D122, TC124 and T101 are defective
IC501 and IC502 are defective.
The indicators are defective or the
housing assembly (CN51) display PCB)
1. The temperature of the indoor heat
exchanger is extremely low.
2. The connection of the heat ex-
changer sensor is loose.
(The connector is disconnected.)
(CN602 and CN603)
3. The heat exchanger sensor and the
P.C. board are defective.
(Refer to Table 11-4-1.)
4. The main P.C. board is defective.
1. The temperature of the indoor heat
exchanger is extremely high.
2. The connection of the heat ex-
changer sensor short-circuited.
(CN602 and CN603)
3. The heat exchanger sensor and the
P.C. board are defective.
(Refer to Table 11-4-1.)
4. The main P.C. board is defective
1. The indoor fan motor is defective.
(Protected operation of P.C. board.)
2. The P.C. board is defective.
3. The connection of the motor
connector is loose.
lead of the motor.
strongly.
4. Between 12V and GND
5. Between 5V and GND
5. IC121,IC124, IC102,D121 and T101
are defective.
is defective.
Table 11-8-1
No. Procedure Check points
11-8-2. P .C . Board Layout
100
30
40
50
60
70
80
90
20
10
0
0102030 4050
Resistance value (k )
Temperature ( C)
TD : Discharge temp. sensor
TA : Room temp. sensor
TC, TCJ : Heat exchanger temp. sensor
TO : Outdoor temp. sensor
TE : Outdoor heat exchanger temp. sensor
TS : Suction temp. sensor
TA, TC, TCJ, TO, TE, TS
TD
[1] Sensor characteristic table
–98 –
–99 –
11-8-3. Indoor Unit (Other Parts)
No.
1
Part name
Room temp. (TA) sensor
Heat exchanger (TC) sensor
Checking procedure
Disconnect the connector and measure the resistance value with tester.
(Normal temp.)
Temperature
Sensor
TA, TC,TCJ (k.)
10°C20°C25°C30°C40°C
20.7 12.6 10.0 7.9 4.5
5
4
3
2
1
White
Yellow
Yellow
Yellow
Yellow 5
4
3
2
1
Refer to 11-5-1. (5).
Measure the resistance value of each winding coil by using the tester.
(Under normal temp. 25°C)
Position
1 to 2
1 to 3
1 to 4
1 to 5
Resistance value
250 ± 20.
Refer to 11-5-1. (3) and (4).
2
3
Remote controller
Louver motor & Damper motor
MP24Z3N
4Indoor fan motor
Heat exchanger (TCJ)sensor
ICF-340-41-1
11-8-4. Outdoor Unit
No.
1
Part name
Compressor
Checking procedure
Measure the resistance value of winding by using the tester.
Red
White Black
Measure the resistance value of winding by using the tester.
Under 20°C
Measure the resistance value of winding by using the tester.
COM
COM
52 4
Y
W
RBL
1
6GR
3O
Position
Gray - White
Gray - Orange
Red- Yellow
Red- Blue
Resistance value
43 to 49Ω
43 to 49Ω
43 to 49Ω
43 to 49Ω
Under 20°C
Disconnect the connector, and measure resistance value with the tester.
(Normal temperature)
Outdoor temperature sensor
(TO), discharge temperature
sensor (TD), suction
temperature sensor (TS),
outdoor heat exchanger
temperature sensor (TE)
Temperature
Sensor
TD (kΩ)
TO,TS,TE (kΩ)
10°C2°0C2°5C3°0C4°0C5°0C
100 64 50 41 27 18
20.7 12.6 10.0 7.9 4.5 —
Measure the resistance value of each winding by using the tester.
Under 20ºC
Position
Red - White
White - Black
Black- Red
Resistance value
20 to 22Ω
20 to 22Ω
20 to 22Ω
2
3
4
5
Outdoor fan motor
(Model : ICF-140-43-4R)
Pulse motor valve coil
(Model : CAM-MD12TCTH-5)
Red
White Black
(Model :
ASM89D16UFZ : 10,13k)
(Model :
DA131S1B-31FZ : 18k)
Position
Red - White
White - Black
Black - Red
Resistance value
ASM89D16UFZ DA131S1B-31FZ
1.44Ω1.70Ω
4-way valve coil
(Model : SQ : 10, 13k)
(Model : STF : 18k) Resistance value
2210 ± 221Ω
SQ
1435 ± 144Ω
STF
–100 –
11-8-5. Checking Method for Each Part
No.
1
Part name
Electrolytic capacitor
(For boost, smoothing)
Checking procedure
1. Turn OFF the power supply breaker.
2. Discharge all three capacitors completely.
3. Check that safety valve at the bottom of capacitor is not broken.
4. Check that vessel is not swollen or exploded.
5. Check that electrolytic liquid does not blow off.
6. Check that the normal charging characteristics are shown in continuity test by
the tester.
MCC-5009
Soldered
surface
Heat sink IGBT side
C12 C13 C14
Case that product is good
Pointer swings once, and returns
slowly. When performing test
once again under another
polarity, the pointer should return.
C12, C13, C14 → 500µF or 760µF/400V
Resistance value
in good product
Tester rod
+ –
~
2
~
3
~
2
~
3
–
4
~~ ~
+ –
~
1
12 3
(DB01)
4
4
23
+
1
+
–
1. Turn OFF the power supply breaker.
2. Completely discharge the electrolytic capacitors.
3. Remove the diode block from the PCB (which is soldered in place).
4. Use a multimeter with a pointer to test the continuity, and check that the
diode block has the proper rectification characteristics.
2
C07, C08, C09 → 500µF/400V or
760µF/400V
Diode block
(RAS-10,13N3AV2-E1) (RAS-18N3AV2-E)
50 MΩ or more
–101 –
11-9. How to Simply Judge Whether Outdoor Fan Motor is Good or Bad
1. Symptom
•Outdoor fan motor does not rotate.
•Outdoor fan motor stops within several tens seconds though it started rotating.
•Outdoor fan motor rotates or does not rotate according to the position where the fan stopped, etc.
Remote controller check code “02 : Outdoor block, 1A : Outdoor fan drive system error”
2. Cause
The following causes are considered when the outdoor fan motor does not normally rotate.
1) Mechanical lock of the outdoor fan motor
2) Winding failure of the outdoor fan motor
3) Position-detect circuit failure inside of the outdoor fan motor
4) Motor drive circuit failure of the outdoor P.C. board
3.
If the resistance value between
1 (Red lead) – 2 (White lead)
2 (White lead) – 3 (Black lead)
– 1 (Red lead)
3 (Black lead)
CN31 (10/13N3AV2-E1)
CN300 (18N3AV2-E)
is 20 to 22Ω, it is normal.
Turn OFF the breaker.
Fan motor is normal.
Does the fan rotate without trouble
when rotating it with hands?
Disconnect two connectors (CN31/CN300) of the
outdoor fan motor from the outdoor P.C. board.
(Outdoor P.C. board error)
Fan motor error
YES
YES
NO
NO
CN31/CN300
How to simply judge whether outdoor fan motor is good or bad
NOTE :
However, GND circuit error inside of the motor may be accepted in some cases when the above check is
performed.
When the fan motor does not become normal even if P.C. board is replaced, replace the outdoor fan motor.
: Motor winding
of the connector
–102 –
12. HOW TO REPLACE THE MAIN PARTS
WARNING
• Since high voltages pass through the electrical parts, turn off the power without fail before proceeding with
the repairs.
Electric shocks may occur if the power plug is not disconnected.
• After the repairs have been completed (after the front panel and cabinet have been installed), perform a
test run, and check for smoking, unusual sounds and other abnormalities.
If this check is omitted, a fire and/or electric shocks may occur.
Before proceeding with the test run, install the front panel and cabinet.
• Ensure that the following steps are taken when doing repairs on the refrigerating cycle.
1. Do not allow any naked flames in the surrounding area.
If a gas stove or other appliance is being used, extinguish the flames before proceeding.
If the flames are not extinguished, they may ignite any oil mixed with the refrigerant gas.
2. Do not use welding equipment in an airtight room.
Carbon monoxide poisoning may result if the room is not properly ventilated.
3. Do not bring welding equipment near flammable objects.
Flames from the equipment may cause the flammable objects to catch fire.
•If keeping the power on is absolutely unavoidable while doing a job such as inspecting the cir-
cuitry, wear rubber gloves to avoid contact with the live parts.
Electric shocks may be received if the live parts are touched.
High-voltage circuits are contained inside this unit.
Proceed very carefully when conducting checks since directly touching the parts on the control circuit
board may result in electric shocks.
No. Part name Procedure Remarks
①Front panel 1) Stop operation of the air conditioner
and turn off the main power supply.
2) Grip the air inlet grille by two hands
at the handle positions.
3) Pull the air inlet grille as the
arrow direction and remove the rope
from the hook of front panel.
4) Remove screws for front panel. (4 pcs)
Hook of front panel
Rope
Air inlet grille
4) Screws of front
panel (4 pcs)
No. P a rt name Procedure Remarks
②Electrical parts 1) Remove screw for E-box cover.
Box assembly
(E-box)
2) Remove screw for drain guide. (4 pcs)
3) Remove screw for earth-lead.
4) Remove screw for display base.
5) Pull off the TC, TCJ sensor.
6) Take off fan motor conector.
7) Take off louver motor conector.
8) Take off damper motor conector.
9) Remove screw for earth-lead from fan
motor base.
10) Remove screw for E-box
11) - ① Pull the upper part of the E-box.
11) - ② Lift a E-box in the upward for
take off from the hook.
1
)
Screw for E-box cover
Tube
TCJ sensor
TC sensor
5) TCJ sensor
5) TC sensor
4) The screw for
display base
2) Screws for
drain guide
(4 pcs)
3) Screw for
earth-lead
8) Damper motor connector
6) Fan motor connector
7) Louver motor connector
9) Screw for earth-lead from
fan motor base
10) Screw for E-box
Hook for locking E-box
①
②
–103 –
–104 –
No. P a rt name Procedure Remarks
Damper motor lead
Display unit lead
Louver motor lead
Fan motor lead
Earth-lead from
fan motor base
Pipe holder
Screws for heat
exchanger (4 pcs)
② Electrical parts <How to arrange the lead>
Box assembly Shown in the picture.
(E-box)
③ Heat exchanger 1) Take off the pipe holder.
(Refrigerant
cycle assembly)
2) Remove screws for heat exchanger.
(4 pcs)
④ Horizontal 1) Open a horizontal louver outward and
louver stretch the arm of louver base same as
the direction in the picture.
–105 –
No. P a rt name Procedure Remarks
⑤Louver base 1) Remove screws for louver base.
assembly (2 pcs)
2) - ① Pull the upper part of the louver
base to upward.
2) - ② Take off the louver base by pull
out in the front direction.
<Attention for louver base assemble>
Insert the rib of the louver base into the
slot of back body same as the picture.
⑥Bell mouth 1) Remove screws for bell mouth. (4 pcs)
⑦Drain pan and 1) Remove screws for drain pan. (2 pcs)
damper base
2) Remove screws for damper base.
(2 pcs)
①
②
Screws for louver base (2 pcs)
Louver base rib
Back body slot
Screws for bell mouth
(4 pcs)
Screw for drain pan
Screws for damper base
(2 pcs)
Screw for drain pan
–106 –
No. P a rt name Procedure Remarks
⑧Turbo fan 1) Turn the flange nut (M10) in the
counter-clockwise direction and take it off.
2) Pull out the turbo fan from the fan
motor shaft.
<Attention for turbo fan assemble>
The tightening torque of the flange nut
is 5N·m.
⑨Fan motor 1) Remove screws for motor holder,
and take off the motor holder.
2) Take off the lead cover.
<Attention for motor holder assemble>
1. Arrange the earth lead and fan
motor lead.
2. Adjust the motor axis to the center
of the motor holder then fix screws 4 pcs.
⑩Fan motor A method to take off a fan motor in a
condition taking on a heat exchanger.
1) Take off pipe holder and remove
screws for heat exchanger. (refer to ③)
2) Remove screws for the bell mouth.
(refer to ⑥)
Screws for motor hold
(4 pcs)
Motor holder
Lead cover
–107 –
No. P a rt name Procedure Remarks
⑩Fan motor 3) Remove the flange nut and turbo fan.
(refer to ⑧)
4) Remove screws for motor holder and
lead cover. (refer to ⑨)
–108 –
No.
P a rt name
Common procedure
Procedure
1) Turn the power supply off to stop the
operation of air-conditioner.
2) Remove the front panel.
•Remove the 2 fixing screws.
3) Remove the electrical part base.
Remarks
Replace terminal block,
microcomputer ass’y and the
P.C. board ass’y.
12-2. Microcomputer
<P.C. board layout>
–109 –
12-3. Outdoor Unit (RAS-10N3AV2-E1, RAS-13N3AV2-E1)
No.
P a rt name
Common
procedure
Procedure
1. Detachment
NOTE
Wear gloves f or this job.
Otherwise, you ma y injure y our
hands on the parts, etc.
1) Stop operation of the air conditioner,
and turn off the main switch of the
breaker for air conditioner.
2) Remove the valve cover.
(ST1TØ4 × 10L 2 pcs.)
•After removing screw, remove the
valve cover pulling it downward.
3) Remove cord clamp (ST2TØ4 × 14L
3 pcs.), and then remove connecting
cable.
4) Remove the upper cabinet.
(ST1TØ4 × 10L 5 pcs.)
•After removing screws, remove the
upper cabinet pulling it upward.
2. Attachment
1) Attach the water-proof cover.
NOTE
The water-proof cover must be
attached without fail in order to
prevent rain water, etc. from entering
inside the indoor unit.
2) Attach the upper cabinet.
(ST1TØ4 × 10L 5 pcs.)
3) Perform cabling of connecting cable,
and attach the cord clamp.
•Fix the cord clamp by tightening
the screws (ST2T∅4 x 14L 3 pcs.),
fitting 2 concave parts of the cord
clamp to each connecting cables.
4) Attach the valve cover.
(ST1T∅4 x 10L 2 pcs.)
• Insert the upper part into the square
hole of the side cabinet, set hook
claws of the valve cover to square
holes (at three positions) of the main
unit, and attach it pushing upward,
Remarks
How to mount the water-proof cover
Upper cabinet
Waterproof
Valve cover
These 2 bending
parts shall be
put inside of a unit
by bending
these 2 ports.
This part shall be
put on
the side cabinet.
Fit the corner of
the water
proof cover to
the corner of
the front cabinet.
This line shall
be pavallel to
the front cabinet
This part shall cover the
gap between the inverter
box and the front cabinet.
cover
–110 –
No.
P a rt name
Front cabinet
Procedure
1. Detachment
1) Perform step 1 in .
2) Remove the fixing screws (ST1TØ4 × 10L
2 pcs.) used to secure the front cabinet
and inverter cover, the screws (ST1TØ4
× 10L 4 pcs.) used to secure the front
cabinet at the bottom, and the fixing
screws (ST1TØ4 × 10L 2 pcs.) used to
secure the motor base.
•The front cabinet is fitted into the side
cabinet (left) at the front left side so
pull up the top of the front cabinet to
remove it.
2. Attachment
1) Insert the claw on the front left side into
the side cabinet (left).
2) Hook the bottom part of the front right
side onto the concave section of the
bottom plate. Insert the claw of the side
cabinet (right) into the square hole in the
front cabinet.
3) Return the screws that were removed
above to their original positions and
attach them.
Remarks
Front cabinet
Concave section
Claw
Square
hole
− 111 −
No.
Part name
Inverter
assembly
Procedure Remarks
1) Perform work of item 1 in .
2) Remove screw (ST1TØ4 × 10L 2 pcs.) of the
upper part of the front cabinet.
•If removing the inverter cover in this
condition, P.C. board can be checked.
•If there is no space above the unit, perform
work of 1 in .
Be careful to check the inverter because
high-voltage circuit is incorporated in it.
3) Perform discharging by connecting ,
polarity by discharging resistance (approx.
100Ω40W) or plug of soldering iron to ,
terminals a of the C07 (printed “WARNING
ELECTRIC SHOCK” is attached.)
electrolytic capacitor (760µF or 500µF) on
P.C. board.
Be careful to discharge the capacitor
because the electrolytic capacitor
cannot naturally discharge and voltage
remains according to trouble type in
some cases.
NOTE
This capacitor is one with mass capacity.
Therefore, it is dangerous that a large
spark generates if short-circuiting
between ,
Requirement
As each connector has a lock mecha-
nism, avoid to remove the connector by
holding the lead wire, but by holding the
connector.
The connector is one
with lock, so remove
it while pushing the
part indicated by an
arrow.
Be sure to remove the connector by
holding the connector, not by pulling
the lead wire.
4) Remove screw (ST1T∅4 x 10L 4pcs.) fixing
the terminal part of inverter box to the main
body.
5) Remove the front cabinet by performing step
1 in
k
, and remove the fixing screws
(ST1T∅4 x 10L) for securing the main body
and inverter box.
6) Remove various lead wires from the holder
at upper part of the inverter box.
7) Pull the inverter box upward.
8) Disconnect connectors of various lead wires.
Inverter cover
P.C. board
(Soldered surface)
A screw
(ST1T-4x10L)PC. board
(Soldered surface)
–112 –
No. Part name
Control board
assembly
Procedure
1. Disconnect the leads and connectors connected to
the other parts from the control board assembly.
1) Leads
•3 leads (black, white, orange) connected to
terminal block.
•Lead connected to compressor :
Disconnect the connector (3P).
•Lead connected to reactor :
Disconnect the two connectors (2P).
2) Connectors
CN31 : Outdoor fan motor (3P: white)*
(* : See Note)
CN72 : 4-way valve (2P: yellow)*
CN61 : TE sensor (2P: white)*
CN73 : PMV (6P: white)
CN64 : TS sensor (3P: white)*
CN62 :TD sensor (3P: white)*
CN63 : TO sensor (2P: white)
NOTE
These connectors have a disconnect prevention
mechanism: as such, the lock on their housing
must be released before they are disconnected.
2. Remove the control board assembly from the P.C.
board base. (Remove the heat sink and control
board assembly while keeping them screwed
together.)
NOTE
Disengage the four claws of the P.C. board base,
hold the heat sink, and lift to remove it.
3. Remove the two fixing screws used to secure the
heat sink and control board assembly.
4. Mount the new control board assembly.
NOTE
When mounting the new control board assembly,
ensure that the P.C. board is inserted properly
into the P.C. board support groove.
Remarks
P.C. board base
P.C. board
4
CN31,CN72,CN6 1,CN73,CN64,
CN62 and CN63 are
connectors with locking
mechanisms: as such, to
disconnect them, they m ust be
pressed in the direction of the
arro w while pulling them out.
–113 –
No.
P a rt name
Side cabinet
Procedure
1. Side cabinet (right)
1) Perform step 1 in and all the steps in
.
2) Remove the fixing screw (ST1TØ4 × 10L
4 pcs.) used for securing the side
cabinet to the bottom plate and valve
fixing panel.
2. Side cabinet (left)
1) Perform step 1 in .
2) Remove the fixing screw (ST1TØ4 × 10L
1 pc.) used to secure the side cabinet
(left) onto the heat exchanger.
3) Remove the fixing screw (ST1TØ4 × 10L
2 pcs.) used for securing the side cabinet
to the bottom plate and heat exchanger.
Remarks
Detail A Detail B Detail C
1) Perform work of item 1 of and .
2) Remove the flange nut fixing the fan motor
and the propeller.
•Flange nut is loosened by turning clock-
wise. (To tighten the flange nut, turn
counterclockwise.)
3) Remove the propeller fan.
4) Disconnect the connector for fan motor
from the inverter.
5) Remove the fixing screws (4 pcs.) holding
by hands so that the fan motor does not
fall.
* Precautions when assembling the fan
motor
Tighten the flange nut using a tightening
torque of 4.9 N•m.
Fan motor
Hook the claw onto
the bottom plate
The back body section hooked
onto the bottom plate here.
Propeller fan
Fan motor
Flange nut
–114 –
No.
Part name
Compressor
Procedure
1) Perform work of item 1 of and , , ,
.
2) Extract refrigerant gas.
3) Remove the partition board.
(ST1TØ4 × 10L 3 pcs.)
4) Remove the sound-insulation material.
5) Remove terminal cover of the compressor,
and disconnect lead wire of the compressor
from the terminal.
6) Remove pipe connected to the compressor
with a burner.
•Take care to keep the 4-way valve away
from naked flames. (Otherwise, it may
malfunction.)
7) Remove the fixing screw of the bottom plate
and heat exchanger. (ST1TØ4 × 10L 1 pc.)
8) Remove the fixing screw of the bottom plate
and valve fixing plate.
(ST1TØ4 × 10L 1 pc.)
9) Pull upward the refrigeration cycle.
10) Remove NUT (3 pcs.) fixing the compressor
to the bottom plate.
Remarks
Reactor 1) Perform work of item 1 of , and .
2) Remove screws fixing the reactor.
(ST1TØ4 × 10L 2 pcs.) Reactor
Partition
Compressor
Valve
board
fixing
plate
–115 –
No.
P a rt name
Electronic
expansion valve
coil
Procedure Remarks
Hooking claw
Minus screwdriver
Fan guard 1. Detachment
1) Perform work of item 1 of .
2) Remove the front cabinet, and put it down
so that fan guard side directs downward.
Perform w ork on a corrugated cardboard,
c loth, etc. to prevent flaw to the product.
3) Remove the hooking claws by pushing minus
screwdriver according to the arrow mark in
the right figure, and remove the fan guard.
2. Attachment
1) Insert claws of the fan guard in the holes
of the front cabinet. Push the hooking
claws (9 positions) by hands and fix the
claws.
Chec k that all the hooking claws are fixed
to the specified positions.
1. Detachment
1) Perform step 1 in , all the steps in
and 1 in .
2) Remove the coil by pull it upward.
2. Attachment
1) Insert a valve coil to value body by push
it downward. And confirm to fix it surely.
–116 –
No.
11
P art name Procedure Remarks
TE sensor (outdoor heat exchanging temperature sensor)
• Attachment
Install the sensor onto the straight pipe part of the condenser
output pipe.
CAUTION
During the installation work (and on its completion), take care not to damage the coverings of
the sensor leads on the edges of the metal plates or other parts. It is dangerous for these
coverings to be damaged since damage may cause electric shocks and/or a fire.
CAUTION
After replacing the parts, check whether the positions where the sensors were installed are the
proper positions as instructed. The product will not be controlled properly and trouble will result
if the sensors have not been installed in their proper positions.
Detail C for 10k Detail C for 13k
TS sensor (Suction pipe temperature sensor)
• Attachment
Install the senser onto the straight pipe part of the suction
pipe. Be careful for the lead direction of the sensor.
TD sensor (Discharge pipe temperature sensor)
• Attachment
With its leads pointed upward, install the sensor onto the
vertical straight pipe part of the discharge pipe.
TO sensor (Outside air temperature sensor)
• Attachment
Insert the outdoor air temperature sensor into the holder, and
install the holder onto the heat exchanger.
Detail A
TS sensor for 13k
Detail B
TD sensor for 13k
12
13
14
Arrow D
Detail C
Detail A
Detail B
TO sensor
holder
Arrow D
TO sensor
Detail B
TD sensor for 10k
Detail A
TS sensor for 10k
–117 –
No.
15
Part name
Replacement of
temperature sensor
for servicing only
Common service
parts of sensor TO,
TS, TE, TD
Procedure
1) Cut the sensor 100 mm longer than old
one.
2) Cut the protective tube after pulling out
it (200 mm).
3) Move the protective tube toward the
thermal sensor side and tear the tip of
lead wire in two then strip the covering
part.
4) Pass the stripped part through the
thermal constringent tube.
5) Cut the old sensor 100 mm length on
the connector side, and recycle that
connector.
6) Tear the lead wire in two on the con-
nector side and strip the covering part.
7) Twist the leads on the connector and
sensor sides, and solder them.
8) Move the thermal constringent tubes
toward the soldered parts and heat
them with the dryer and constring
them.
9) Wind the attached color tape round the
both terminals of the protective tube
when colored protective tube is used.
10) Fix the sensor again.
Remarks
1
2
3
4
5
6
Parts name
Sensor
Sensor Spring (A)
Sensor Spring (B)
Thermal constringent tube
Color tape
Terminal
Q'ty
1
1
1
3
1
3
Cutting here
Cutting here
Cutting here
Soldered part
Dryer
Winding the color tape
100
200
Connector
Thermal
sensor part
Thermal
constringent tube
70
15
100
70
15
NOTE
1) Store the joint part of the sensor and the connector in the electric parts
box.
2) Never joint them near the thermal sensor part. Otherwise it would cause
insulation inferiority because of dew drops.
3) When replacing the sensor using the colored protective tube, wind the
color tape matching the color of that tube.
These are parts for
servicing sensors.
Please check that
the accessories
shown in the right
table are packed.
Remarks
Length : 3m
For spare
For spare
Including one spare
9 colors
–118 –
12-3. Outdoor Unit (RAS-18N3AV2-E)
No.
1
Part name
Common
procedure
Procedure
1. Detachment
NOTE
Wear gloves for this job.
Otherwise, you may injure your
hands on the parts, etc.
1) Stop operation of the air conditioner,
and turn off the main switch of the
breaker for air conditioner.
2) Remove the valve cover.
(ST1TØ4 × 8L 1 pc.)
• After removing screw, remove the
valve cover pulling it downward.
3) Remove wiring cover (ST1TØ4 × 8L 2
pcs.), and then remove connecting
cable.
4) Remove the upper cabinet.
(ST1TØ4 × 8L 5 pcs.)
• After removing screws, remove the
upper cabinet pulling it upward.
2. Attachment
1) Attach the water-proof cover.
NOTE
The water-proof cover must be
attached without fail in order to
prevent rain water, etc. from entering
inside the indoor unit.
2) Attach the upper cabinet.
(ST1TØ4 × 8L 5 pcs.)
3) Perform cabling of connecting cable,
and attach the wiring cover.
• Place the wiring cover over the
opening used to work on the con-
necting wires of the side cabinet,
and secure it using the 2 fixing
screws (ST1TØ4 × 8L 2 pcs.).
At this point, the top cushion of the
wiring cover must be on the inside of
the opening.
4) Attach the valve cover.
(ST1TØ4 × 8L 1 pc.)
• Insert the upper part into the square
hole of the side cabinet, set hook
claws of the valve cover to square
holes (at three positions) of the main
unit, and attach it pushing upward.
Remarks
–119 –
Square hole
Claw
Front cabinet
Concave section
No.
2
Part name
Front cabinet
Procedure
1. Detachment
1) Perform step 1 in 1 .
2) Remove the fixing screws (ST1TØ4 ×
8L 2 pcs.) used to secure the front
cabinet and inverter cover, the screws
(ST1TØ4 × 8L 3 pcs.) used to secure
the front cabinet at the bottom, and the
fixing screws (ST1TØ4 × 8L 2 pcs.)
used to secure the motor base.
• The front cabinet is fitted into the side
cabinet (left) at the front left side so
pull up the top of the front cabinet to
remove it.
2. Attachment
1) Insert the claw on the front left side into
the side cabinet (left).
2) Hook the bottom part of the front right
side onto the concave section of the
bottom plate. Insert the claw of the side
cabinet (right) into the square hole in
the front cabinet.
3) Return the screws that were removed
above to their original positions.
Remarks
–120 –
No.
3
Part name
Inverter
assembly
Procedure
1) Perform work of item 1 in 1 .
2) Remove screw (ST1TØ4 × 8L 2 pcs.) of the
upper part of the front cabinet.
• If removing the inverter cover in this
condition, P.C. board can be checked.
• If there is no space above the unit, perform
work of 1 in
2
.
Be careful to check the inverter because
high-voltage circuit is incorporated in it.
3) Perform discharging by connecting
,
polarity by discharging resistance (approx.
100Ω40W) or plug of soldering iron to
,
terminals of the C14 (printed “CAUTION
HIGH VOLTAGE” is attached.) electrolytic
capacitor (18SAV = 500µF, 22SAV: 760µF)
on P.C. board.
Be careful to discharge the capacitor
because the electrolytic capacitor
cannot naturally discharge and voltage
remains according to trouble type in
some cases.
NOTE
This capacitor is one with mass capacity.
Therefore, it is dangerous that a large
spark generates if short-circuiting
between
,
polarity with screwdriver,
etc. for discharging.
4) Remove screws (ST1TØ4 × 8L 2 pcs.) fixing
the main body and the inverter box.
5) Remove the front cabinet by performing step
1 in , and remove the fixing screws
(ST1TØ4 × 8L) for securing the main body
and inverter box.
6) Remove various lead wires from the holder
at upper part of the inverter box.
7) Pull the inverter box upward.
8) Disconnect connectors of various lead wires.
Requirement
As each connector has a lock mecha-
nism, avoid to remove the connector by
holding the lead wire, but by holding the
connector.
Remarks
The connector is one
with lock, so remove
it while pushing the
part indicated by
an arrow.
Be sure to remove the connector by
holding the connector, not by
pulling the lead wire.
–121 –
P.C. board base
P.C. board
CN700 CN602 CN300
CN701
CN703
CN603
CN601 CN600
No.
4
Part name
Control board
assembly
Procedure
1. Disconnect the leads and connectors connected to
the other parts from the control board assembly.
1) Leads
• 3 leads (black, white, orange) connected to
terminal block.
• Lead connected to compressor :
Disconnect the connector (3P).
• Lead connected to reactor :
Disconnect the 2 connectors (2P).
2) Connectors (×7)
CN300 : Outdoor fan motor (3P: white)∗
(See NOTE)
CN701 : 4-way valve (2P: yellow)∗
CN600 : TE sensor (2P: white)∗
CN700 : PMV (6P: white)
CN603 : TS sensor (3P: white)∗
CN601 :TD sensor (3P: white)∗
CN602 : TO sensor (2P: white)
NOTE
These connectors have a disconnect prevention
mechanism: as such, the lock on their housing
must be released before they are disconnected.
2. Remove the control board assembly from the P.C.
board base.
(Remove the heat sink and control board assem-
bly while keeping them screwed together.)
NOTE
Disengage the 4 claws of the P.C. board base,
hold the heat sink, and lift to remove it.
3. Remove the 2 fixing screws used to secure the
heat sink and control board assembly.
4. Mount the new control board assembly.
NOTE
When mounting the new control board assembly,
ensure that the P.C. board is inserted properly
into the P.C. board support groove.
Remarks
CN300, CN701, CN703,
CN600 and CN603 are
connectors with locking
mechanisms: as such, to
disconnect them, they must
be pushed in the direction of
the arrow while pulling them
out.
–122 –
A
B
C
The back body section is hooked
onto the bottom plate here.
Hook the claw onto
the bottom plate here.
Detail A Detail B Detail C
Fan motor
Propeller fan
Flange nut
No.
5
6
Part name
Side
cabinet
Fan motor
Procedure
1. Side cabinet (right)
1) Perform step 1 in 2 and all the steps in
3 .
2) Remove the fixing screw (ST1TØ4 × 8L
5 pcs.) used for securing the side
cabinet to the bottom plate and valve
fixing panel.
2. Side cabinet (left)
1) Perform step 1 in
2
.
2) Remove the fixing screw (ST1TØ4 × 8L
1 pcs.) used to secure the side cabinet
(left) onto the heat exchanger.
3) Remove the fixing screw (ST1TØ4 × 8L
2 pc.) used for securing the side cabinet
to the bottom plate and heat exchanger.
1) Perform work of item 1 of 1 and
2
.
2) Remove the flange nut fixing the fan motor
and the propeller.
• Flange nut is loosened by turning clockwise.
(To tighten the flange nut, turn
counterclockwise.)
3) Remove the propeller fan.
4) Disconnect the connector for fan motor from
the inverter.
5) Remove the fixing screws (2 pc.) holding by
hands so that the fan motor does not fall.
* Precautions when assembling the fan
motor.
Tighten the flange nut using a tightening
torque of 4.9 N•m.
Remarks
–123 –
No.
7
8
Part name
Compressor
Reactor
Procedure
1) Perform work of item 1 of 1 and
2
, 3, 4, 5.
2) Extract refrigerant gas.
3) Remove the partition board.
(ST1TØ4 × 8L 3 pcs.)
4) Remove the sound-insulation material.
5) Remove terminal cover of the compressor, and
disconnect lead wire of the compressor from the
terminal.
6) Remove pipe connected to the compressor with
a burner.
• Take care to keep the 4-way valve away from
naked flames. (Otherwise, it may malfunction.)
7) Remove the fixing screw of the bottom plate
and heat exchanger. (ST1TØ4 × 8L 1 pc.)
8) Remove the fixing screw of the bottom plate
and valve fixing plate. (ST1TØ4 × 8L 1 pc.)
9) Pull upward the refrigeration cycle.
10) Remove bolt (3 pcs.) fixing the compressor to
the bottom plate.
∗Precautions when assembling the compressor.
Tighten the compressor bolts using a tighten-
ing torque of 4.9 N•m.
1) Perform work of item 1 of 2, and
3
.
2) Remove screws fixing the reactor.
(ST1TØ4 × 8L 4 pcs.)
Remarks
Valve fixing plate
Partition board
Compressor
Reactor
–124 –
No.
9
10
Part name
Electronic
expansion
valve coil
Fan guard
Procedure
1. Detachment
1) Perform step 1 in 2, all the steps in 3 and
1 in 5.
2) Remove the coil by pulling it up from the
electronic control valve body.
2. Attachment
1) When assembling the coil into the valve body,
ensure that the coil anti-turn lock is installed
properly in the pipe.
<Handling precaution>
When handling the parts, do not pull the leads.
When removing the coil from the valve body, use
your hand to secure the body in order to prevent
the pipe from being bent out of shape.
1. Detachment
1) Perform work of item 1 of
2
.
2) Remove the front cabinet, and put it down so
that fan guard side directs downward.
Perform work on a corrugated cardboard,
cloth, etc. to prevent flaw to the product.
3) Remove the hooking claws by pushing minus
screwdriver according to the arrow mark in
the right figure, and remove the fan guard.
2. Attachment
1) Insert claws of the fan guard in the holes of
the front cabinet.
Push the hooking claws (9 positions) by
hands and fix the claws.
All the attaching works have completed.
Check that all the hooking claws are fixed to
the specified positions.
Remarks
Coil inserting
position
Coil anti-turn
lock position
Coil
anti-turn
lock
Hooking claw
Minus screwdriver
–125 –
No.
11
12
13
14
Part name
TE sensor (Outdoor heat exchanging temperature sensor)
• Attachment
With the leads pointing downward and the sensor leads
pointing in the direction shown in the figure, install the sensor
onto the straight pipe part of the condenser output pipe.
TS sensor (Suction pipe temperature sensor)
• Attachment
With its leads pointing downward, point the sensor in the
direction of the packed valve, and install it onto the straight
pipe part of the suction pipe.
TD sensor (Discharge pipe temperature sensor)
• Attachment
With its leads pointed downward, install the sensor onto the
vertical straight pipe part of the discharge pipe.
TO sensor (Outside air temperature sensor)
• Attachment
Insert the outdoor air temperature sensor into the holder, and
install the holder onto the heat exchanger.
Procedure Remarks
CAUTION
During the installation work (and on its completion), take care not to damage the coverings of
the sensor leads on the edges of the metal plates or other parts. It is dangerous for these
coverings to be damaged since damage may cause electric shocks and/or a fire.
CAUTION
After replacing the parts, check whether the positions where the sensors were installed are the
proper positions as instructed. The product will not be controlled properly and trouble will
result if the sensors have not been installed in their proper positions.
Detail C for RAS-18SAV-E
Detail A
TS sensor
Detail B
TD sensor
Arrow D
TO sensor
–126 –
13. EXPLODED VIEWS AND PARTS LIST
13-1. Indoor Unit (1)
Location Part Location Part
No. No. No. No.
201 43T00553 FRONT PANEL ASSY 212 43T19333 HOLDER, SENSOR (Made in Japan)
202 43T09460 INLET GRILLE ASSY 213 43T79314 DRAIN GUIDE (UP)
203 43T80325 AIR FILTER 214 43T79315 DRAIN GUIDE (DOWN)
204 43T03379 BACK BODY ASSY 215 43T49341 SHIELD PIPE
205 43T39340 MOTOR BASE ASSY 216 43T72310 DRAIN PAN ASSY
206 43T21424 FAN MOTOR ASSY 217 43T70313 HOSE, DRAIN (Made in Thailand)
207 43T20330 TURBO FAN ASSY 218 43T22317 DAMPER ASSY
208 43T60408 MOTOR HOLDER 219 43T22316 UPPER LOUVER ASSY
209 43T63331 LEAD COVER 220 43T22315 HORIZONTAL LOUVER
210 43T22314 BELL MOUTH ASSY 221 43T63333 DISPLAY BASE
211 43T44455 REFRIGERANT CYCLE ASSY 222 43T62339 TERMINAL COVER ASSY
223 43T49340 PIPE HOLDER
211 43T44456 224 43T82316 PLATE MOUNTING
225 43T66309 WIRELESS REMOTE CONTROLLER
211 43T44457 226 43T83003 HOLDER, REMOTE CONTROL
(FOR RAS-B10UFV-E1)
REFRIGERANT CYCLE ASSY
(FOR RAS-B13UFV-E1)
REFRIGERANT CYCLE ASSY
(FOR RAS-B18UFV-E1)(Made in Thailand)
Description Description
–127 –
13-2. Indoor Unit (E-Part)
Location Part Location Part
No. No. No. No.
401 43T60406 406 43T69865
402 43T50321 407 43T6V567
403 43T50332 407 43T6V568
404 43T50333 407 43T6V569
PC BOARD ASSY,WRS-LED
PC BOARD (FOR RAS-B10UFV-E1)
PC BOARD (FOR RAS-B13UFV-E1)
PC BOARD (FOR RAS-B18UFV-E1)
405 43T62003
TERMINAL 3P
SENSOR;THERMOSTAT
SENSOR:HEAT EXCHANGER
SENSOR:HEAT EXCHANGER
CORD CLAMP
Description Description
–128 –
13-3. Outdoor Unit (RAS-10,13N3AV2-E1)
Location Part Location Part
No. No. No. No.
1 43T00468 18 43T58309
2 43T00459 21 43T20319
3 43T42327 22 43T21375
4 43T00452 23 43T47001
5 43T19329 24 43T97001
6 43T00562 25 43T49335
8 43T41476 26 43T46376
9 43T43410 27 43T63327
10 43T46358 28 43T63319
11 43T46366 29 43T79305
12 43T47331 30 43T39333
REACTOR
PROPELLER FAN
FAN MOTOR
NUT FLANGE
NUT
RUBBER CUSHION
COIL;V-4WAY
COIL-4WAY
HOLDER,SENSOR
DRAIN NIPPLE
MOTOR BASE CONNECTION PLATE
13 43T47332 31 43T63318
14 43T00448 32 43T63317
15 43T00451 33 43T63316
HOLDER SENSOR
HOLDER,SENSOR
HOLDER,SENSOR
16 43T46347 34 43T19331 FIN GUARD
17 43T63329
FRONT CABINET
LEFT CABINET
BASE PLATE ASSEMBLY
UPPER CABINET
FAN GUARD
PACKED VALVE COVER ASSEMBLY
COMPRESSOR
CONDENSER ASSEMBLY
VALVE;PACKED 6.35 DIA
VALVE;PACKED 9.52 DIA
BONNET, 6.35 DIA
BONNET, 9.52 DIA
FIXING PLATE VALVE
RIGHT CABINET ASSEMBLY
BODY PMV
COIL PMV
Description Description
–129 –
13-4. Outdoor Unit (RAS-18N3AV2-E)
Location Part Location Part
No. No. No. No.
1 43T00468 18 43T58306
2 43T00459 21 43T20319
3 43T42327 22 43T21375
4 43T00452 23 43T47001
5 43T19329 24 43T97001
6 43T19348 25 43T49335
8 43T41446 26 43T46343
9 43T43451 27 43T63320
10 43T46358 28 43T63319
11 43T46355 29 43T79305
12 43T47331 30 43T39333
REACTOR
PROPELLER FAN
FAN MOTOR
NUT FLANGE
NUT
RUBBER CUSHION
4 WAY VALVE
4 WAY VALVE COIL ASSEMBLY
HOLDER,SENSOR
DRAIN NIPPLE
MOTOR BASE CONNECTION PLATE
13 43T47333 31 43T63318
14 43T00448 32 43T63317
15 43T00451 33 43T63323
HOLDER SENSOR
HOLDER,SENSOR
HOLDER,SENSOR
16 43T46347 34 43T19331 FIN GUARD
17 43T63329
FRONT CABINET
LEFT CABINET
BASE PLATE ASSEMBLY
UPPER CABINET
FAN GUARD
PACKED VALVE COVER
COMPRESSOR
CONDENSER ASSEMBLY
VALVE;PACKED 6.35 DIA
VALVE;PACKED 12.7 DIA (H4)
BONNET, 6.35 DIA
BONNET, 12.70 DIA
FIXING PLATE VALVE
RIGHT CABINET ASSEMBLY
BODY PMV
COIL PMV
Description Description
–130 –
13-5. P.C. Board Layout (RAS-10, 13N3AV2-E1)
Location Part Location Part
No. No. No. No.
701 43T62351 HEATSINK
705 43T50334
702 43T6V572 PC-BOARD (RAS-10N3AV2-E1)
706 43T50304
703 43T60392 TERMINAL-5P 707 43T62313
TEMPERATURE SENSOR
SENSOR;HEAT EXCHANGER
BASE-PLATE-PC
704 43T60326 FUSE
Description Description
702 43T6V573PC-BOARD (RAS-13N3AV2-E1)
–131 –
13-6. P.C. Board Layout (RAS-18N3AV2-E)
Location Part Location Part
No. No. No. No.
701 43T62320 HEATSINK 705 43T60377
702 43T69943 PC BOARD 706 43T50304
703 43T60392 TERMINAL-5P 707 43T62313
TEMPERATURE SENSOR
SENSOR;HEAT EXCHANGER
BASE-PLATE-PC
704 43T60326 FUSE
Description Description
– 56 –
FILE NO. SVM-03005
TOSHIBA CARRIER (THAILAND) CO.,LTD.
144/9 MOO 5, BANGKADI INDUSTRIAL PARK, TIVANON ROAD, TAMBOL BANGKADI,
AMPHUR MUANG, PATHUMTHANI 12000, THAILAND.