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SERVICE MANUAL
FILE NO. DAS-SM-00-001
AIR-CONDITIONER
SUPPLEMENT
SPLIT WALL TYPE
PRINTED IN JAPAN, Nov.,1999 ToMo
RAS-07YKX
/
RAS-07YAX
RAS-10YKX
/
RAS-10YAX
RAS-11YKX
/
RAS-11YAX
RAS-07YK-E
/
RAS-07YA-E
RAS-10YK-E
/
RAS-10YA-E
RAS-07YK-ES/RAS-07YA-ES
RAS-10YK-ES
/
RAS-10YA-ES
RAS-10YK-HX
/
RAS-10YA-HX
RAS-07YKX-T
/
RAS-07YAX-T
RAS-10YKX-T
/
RAS-10YAX-T
– 2 –
CONTENTS
1. SPECIFICATIONS..................................................................................... 3
2. CONSTRUCTION VIEWS ........................................................................ 8
3. WIRING DIAGRAM ................................................................................. 10
4. SPECIFICATIONS OF ELECTRICAL PARTS ...................................... 11
5. REFRIGERANT CYCLE DIAGRAM ...................................................... 13
6. CONTROL BLOCK DIAGRAM .............................................................. 14
7. OPERATION DESCRIPTIONS................................................................. 15
8. INSTALLATION PROCEDURE ............................................................... 20
9. TROUBLESHOOTING CHART............................................................... 33
10. PART REPLACEMENT........................................................................... 46
11. EXPLODED VIEWS AND PARTS LIST ............................................... 50
– 3 –
1. SPECIFICATIONS
RAS-07YKX/07YAX, RAS-07YK-E/07YA-E, RAS-07YKX-T/07YAX-T
RAS-07YK-E/YA-E RAS-07YKX/YAX RAS-07YKX-T/YAX-T
MODEL
ITEM
Cooling
220V240V 220V
Capacity kW
*
1
2,102,20 2,10
Phase Single
V220240 220Power source
Hz 50
Power consumption kW 0,600,65 0,60
Power factor % 9694 96
V220V240V 220V
Running current
Indoor/Outdoor A 0,15/2,700,15/2,72 0,15/2,70
Starting current A 12
Moisture removal lit/h 0,8
Indoor (H/M/L) dB (A) 39 / 33 / 29
Noise
(SPL at 1 meter)
Outdoor (220240V) dB (A) 4445 44
Name of refrigerant R-22
Refrigerant
Rated volume kg 0,59
Refrigerant control Capillary tube
Gas side size mm 9,52
Connection type Flare connection
Liquid side size mm 6,35
Connection type Flare connection
Maximum length (of one way) m
*
210
Interconnection pipe
Maximum height difference
Indoor unit
Outdoor unit
m
5
Condensate drain pipe Outer diameter mm 16
INDOOR UNIT RAS-07YK-E RAS-07YKX RAS-07YKX-T
Height mm 265
Width mm 790Dimensions
Depth mm 189
Net weight kg 8
Evaporator type Finned tube
Indoor fan type Cross flow fan
High fan m³/h 550
Medium fan m³/h 490Air flow rate
Low fan m³/h 430
Fan motor output W 20
Air filter Polypropylene net filter (Washable)
OUTDOOR UNIT RAS-07YA-E RAS-07YAX RAS-07YAX-T
Height mm 530
Width mm 770Dimensions
Depth mm 200
Net weight kg 26
Condenser type
Finned tube
Outdoor fan type Propeller
Air flow rate (220240V) m³/h 15001700 1500
Fan motor output W 18 (UE6-21SJ5P) 18 (UE6-21A5P), 20 (HF-240-20A)
Model PH80T1-4C
Compressor
Output W 605
Safety device Fuse, Overload relay
Auto louver Ye s
Usable outdoor temperature range °C2143
Specifications are subject to change without notice.
4
RAS-10YKX/10YAX, RAS-11YKX/11YAX
RAS-10YK-E/10YA-E, RAS-10YK-HX/10YA-HX
Specifications are subject to change without notice.
RAS-10YKX/10YAX
RAS-10YK-E/10YA-E
RAS-10YK-HX/10YA-HX
RAS-11YKX/11YAX
MODEL
ITEM
Cooling
220V240V
Capacity kW
*
1
2,702,70
Phase Single
V220240Power source
Hz 50
Power consumption kW 0,800,85
Power factor % 9694
V220V240V
Running current
Indoor/Outdoor A 0,15/3,650,15/3,60
Starting current A 16
Moisture removal lit/h 1,2
Indoor (H/M/L) dB (A) 44 / 36 / 29
Noise
(SPL at 1 meter)
Outdoor (220240V) dB (A) 4445
Name of refrigerant R-22
Refrigerant
Rated volume kg 0,70
Refrigerant control Capillary tube
Gas side size mm 9,52
Connection type Flare connection
Liquid side size mm 6,35
Connection type Flare connection
Maximum length (of one way) m
*
210
Interconnection pipe
Maximum height difference
Indoor unit
Outdoor unit
m
5
Condensate drain pipe Outer diameter mm 16
INDOOR UNIT RAS-10YKX
RAS-10YK-E
RAS-10YK-HX
RAS-11YKX
Height mm 265
Width mm 790Dimensions
Depth mm 189
Net weight kg 8
Evaporator type Finned tube
Indoor fan type Cross flow fan
High fan m³/h 650
Medium fan m³/h 510Air flow rate
Low fan m³/h 430
Fan motor output W 20
Air filter Polypropylene net filter (Washable)
OUTDOOR UNIT RAS-10YAX
RAS-10YA-E
RAS-10YA-HX
RAS-11YAX
Height mm 530
Width mm 770Dimensions
Depth mm 200
Net weight kg 29
Condenser type Finned tube
Outdoor fan type Propeller
Air flow rate (220240V) m³/h 15001700
Fan motor output W 18 (UE6-21SJ5P) 18 (UE6-21A5P), or 20 (HF-240-20A)
Model PH102T1-4C 2PS146D5AB02
Compressor
Output W 750
Safety device Fuse, Overload relay
Air flow rate Ye s
Usable outdoor temperature range °C2143
5
RAS-10YK-ES / RAS-10YA-ES
RAS-10YKX-T / RAS-10YAX-T
Specifications are subject to change without notice.
RAS-10YK-ES/10YA-ES RAS-10YKX-T/10YAX-T
MODEL
ITEM
Cooling
220V240V 220V
Capacity kW
*
1
2,652,70 2,70
Phase Single
V220240 220
Power source
Hz 50
Power consumption kW 0,800,85 0,80
Power factor % 9694 96
V220V240V 220V
Running current
Indoor/Outdoor A 0,15/3,65
Starting current A 16 11
Moisture removal lit/h 1,2
Indoor (H/M/L) dB (A) 44 / 36 / 29
Noise
(SPL at 1 meter)
Outdoor dB (A) (220240V) 44 (220V) 46
Name of refrigerant R-410A R-22
Refrigerant
Rated volume kg 0,69 0,75
Refrigerant control Capillary tube
Gas side size mm 9,52
Connection type Flare connection
Liquid side size mm 6,35
Connection type Flare connection
Maximum length (of one way) m
*
210
Interconnection pipe
Maximum height difference
Indoor unit
Outdoor unit
m
5
Condensate drain pipe Outer diameter mm 16
INDOOR UNIT RAS-10YK-ES RAS-10YKX-T
Height mm 265
Width mm 790Dimensions
Depth mm 189
Net weight kg 8
Evaporator type Finned tube
Indoor fan type Cross flow fan
High fan m³/h 650
Medium fan m³/h 510Air flow rate
Low fan m³/h 430
Fan motor output W 20
Air filter Polypropylene net filter (Washable)
OUTDOOR UNIT RAS-10YA-ES RAS-10YAX-T
Height mm 530
Width mm 770
Dimensions
Depth mm 200
Net weight kg 29 31
Condenser type Finned tube
Outdoor fan type Propeller
Air flow rate m³/h (220240V) 1500 (220V)1700
Fan motor output W 18 (UE6-21SJ5P) 27 (UE6-31C5P) or 30 (HF-240-30A)
Model PA98X1T-4FZ RM5510GNE92
Compressor
Output W 750
Safety device Fuse, Overload relay
Auto louver Ye s
Usable outdoor temperature range °C2143
7
Note :
*
1
Capacity is based on the following temperature conditions.
CONDITION COOLING
TEMPERATURE
Indoor unit inlet air temperature
(DB) 27 °C
(WB) 19 °C
Outdoor unit inlet air temperature
(DB) 35 °C
(WB) 24 °C
Notes :
*
2 CHARGELESS
No additional refrigerant required.
This air conditioner accepts a connection piping length of up to 10m and a head of up to 5m.
There is no need to add the refrigerant as long as the total length of the connection piping is up to 10m.
Air filter
790
Heat exchanger
Air inlet
265
Air outlet
47
10
50
189
47
10
50
Knock out system
790
232 326 232
Hanger
321
Drain hose (0,54m)
Connecting pipe (0,39m)
(Flare Ø6,35)
(Flare Ø9,52)
Hanger
65965,5
326
450
65,5
For stud bolt
(Ø8~Ø10)
For stud bolt
(Ø6)
Hanger
Minimum
distance
to wall
Minimum
distance
to ceiling
265
178,5
Knock out system
Front panel
Back body
20 2037
40,5
60,5
790
12626931976
Center line
Installation
plate outline
HangerHanger
40,5
3,5
Hanger
Minimum
distance
to wall
17 20
46
120 or more 120 or more
66 or more
2,5
Connecting pipe (0,49m)
1800
07YK-E, 07YK-ES, 10YK-E
10YK-ES:
Without power cord
07YKX, 10YKX, 11YKX
07YKX-T, 10YKX-T :
With power cord
10YK-HX :
With power cord & plug
- 8 -
2.CONSTRUCTION VIEWS
2-1.Indoor Unit
600 85
36
111
Ø25 Drain hole
50
30
216
230
8-Ø6 Holes
(For fixing the outdoor unit)
4-Ø11x14 Long holes
(For anchor bolt Ø8-Ø10)
Gas side (flare Ø9,52)
Liquid side (flare Ø6,35)
111
A
600
R10
50
36
25
216
230
Ø11x14 Hole
Ø6 Hole
Handle
11
525
530
5
268
Fan guard
ø420
TOSHIBA
770 59
89
200
11
12
Electric
parts cover
Z
54 62
Access for
charging
250
Z
View
600
45 or more
Inlet port
600 or more
(Minimum distance
of the wall)
4-Ø11x14 Long holes
(For anchor bolt Ø8-Ø10)
400 or more
Outlet
port
Center
port
230
100 or more
Inlet port
Visible outline
of the product
A
Detail Drawing
Mounting dimension of anchor bolt
268
770
59
89
2-2. Outdoor Unit
- 9 -
10
3. WIRING DIAGRAM
1
2
3
456
1
2
3
456
5
3 1
1
2
1
2
1
2
1
2
L
N
FAN
MOTOR
WHI
WHI
PNK
BLK
BLK
BLK
RED
RED
RED
CAPACITOR CAPACITOR
OVER LOAD
RELAY
GRN & YEL
CHASSIS
INDOOR
OUTDOOR
BLK
WHI
GRN&YEL
GRN&YEL
P04
BLK
BRW
BLU
ORN
ORN
ORN
ORN
CN04
CN13
CN25
CN03CN10
C58
CN11 CN01
BLK
BLK
BLK
BLK
POWER
SUPPLY
CIRCUIT
C02
DC 12V
DB01
R01
C01
L01
C15
R22
F01
6,3A
250V
R21
RY01
RY02
WHI
BLK
3
4
3
4
POWER
TERMINAL
BLOCK
Datail A
INDOOR
TERMINAL
BLOCK
THERMO
SENSOR
(TA)
AC FAN MOTOR
HEAT
EXCHANGER
SENSOR
(TC)
:
:
:
:
:
:
:
:
:
:
BROWN
RED
WHITE
YELLOW
BLUE
BLACK
GRAY
PINK
ORANGE
GREEN &
YELLOW
BRW
RED
WHI
YEL
BLU
BLK
GRY
PNK
ORN
GRN&YEL
COLOR IDENTIFICATION
VARISTOR
1
9
8
7
6
54321
9
8
7
6
5
9
8
7
6
5
4
4
3
3
2
2
1
1
2
2
1
SG01
DSA
1
23
5
3 1
1
23
YEL
BLK
BLK
BRW
PNK
WHI
1
2
1
2
COMPRESSOR
BLU
PNK
BLK
WHI
BLU
BLU
BLU
BLU
BLU
OUTDOOR
TERMINAL
BLOCK
RAS-10YK-HX
RAS-07YK-E
RAS-10YK-E
RAS-07YK-ES
RAS-10YK-ES
RAS-07YK-E/10YK-E
RAS-07YK-ES/10YK-ES
RAS-07YKX
RAS-10YKX
RAS-11YKX
RAS-07YKX-T
RAS-10YKX-T
RAS-07YKX/10YKX/11YKX
RAS-07YKX-T/10YKX-T/10YK-HX
L
N
THERMAL
FUSE
77°C x 1
THERMAL
FUSE
77°C x 2
Power cord with plug
LOUVER MOTOR
1
2
3
4
6
5
PNK
YEL
ORN
RED
BRW
BLU
CN07
1
2
3
4
6
5
DC 5V
CR03 IC 03
INFRARED RAYS RECEIVE
AND INDICATION PARTS
FAN MOTOR
RAS-10YAX-T
COMPRESSOR
RAS-10YA-ES
only
only
A
MCC-798
VARISTOR
11
4. SPECIFICATIONS OF ELECTRICAL PARTS
4-1. Indoor Unit
No. PARTS NAME TYPE SPECIFICATIONS
Output (Rated) 20W, 6poles, 1phase, 220240V, 50Hz
Red-Black White-Black1
Fan motor
(for indoor) MMF-240-20-4A
Winding resistance (
W
)
(at 20°C)
220,8 324,3
2 Thermo. sensor (TA-sensor) (Microprocessor) 10k
W
at 25°C
3 Switching transformer SWT-47
4 Microcomputer TMP87CK40AN
5 Power relay, Common relay DI1U Coil : DC 12V 75mA, Rated AC 250V 20A
6 Heat exchanger sensor (TC-sensor) (Microprocessor) 10k
W
at 25°C
7 Line filter SS11V-06180 18mH, AC 0,6A
8 Diode D3SBA60 4A, 600V
9 Capacitor ECEC2GA470BL 47
m
F, 400V
10 Fuse TSCR T6, 3A, 250V
11 Varistor 15G561K 560V
12 Resistor 5,6
W
, 2W
13 Louver motor MP35EA12 Output (Rated) 2W, 10poles, 1phase, DC 12V
4-2. Outdoor Unit
RAS-07YAX, RAS-07YA-E, RAS-07YAX-T
No. PARTS NAME TYPE SPECIFICATIONS
Output (Rated) 605W, 2poles, 1phase, 220240V, 50Hz
C-R C-S1 Compressor PH80T1-4C
Winding resistance (W)
(at 20°C)
4,80 8,37
Output (Rated) 18W, 6poles, 1phase, 220240V, 50/60Hz
Red-Black White-Black
RAS-07YA-E
UE6-21SJ5P
Winding resistance (
W
)
(at 20°C)
370 370
Output (Rated) 18W, 6poles, 1phase, 220240V, 50/60Hz
Red-Black White-BlackUE6-21A5P
Winding resistance (W)
(at 20°C)
370 370
Output (Rated) 20W, 6poles, 1phase, 220240V, 50/60Hz
Red-Black White-Black
2
Fan motor
(for outdoor)
RAS-07YAX
RAS-07YAX-T
HF-240-20A
Winding resistance (W)
(at 20°C)
387 466
RAS-07YA-E
SK-50FMP1,5U1 AC 500V, 1,5
m
F
3
Runnin
g
capacitor
(for fan motor)
RAS-07YAX
RAS-07YAX-T
DS501155BPQA AC 500V, 1,5mF
4 Running capacitor (for compressor) SK-40CMP15U1 AC 400V, 15
m
F
5 Overload relay JMRA99208-9201 U/T 4,2A (25°C), OPEN 130 ± 5°C, CLOSE 69 ± 11°C
15
7. OPERATION DESCRIPTIONS
7-1. FAN ONLY Operation
(The Remote Control MODE Button
is Set to the FAN ONLY Operation)
Once the setting is made, the operation mode is
memorized in the microcomputer so that the same
operation can be effected thereafter simply by
pushing [START/STOP] button.
(MODE of the remote control : FAN ONLY)
(1) During this mode, the relay RY01 is always
turned off so that only the indoor fan is operated.
RY02 is always turnd on. FAN-ONLY display is lit.
1) When the FAN is set to AUTO, the indoor fan
motor operates as shown in Fig 7-1-1.
2) When the FAN is set to LOW, MED. or HIGH,
the indoor fan motor operates with a constant
in volume as listed in Table 7-1-1.
7-2. COOL Operation
(MODE of the remote control : COOL)
(1) Compressor, outdoor fan and operation display
are controlled as shown in Fig. 7-2-1.
Fig. 7-2-2
(3) Once the setting is made, the operation mode is
memorized in the microcomputer so that the
same operation can be effected thereafter simply
by pushing the START/STOP button.
HIGH
MED
LOW(+)
LOW
LOW
28
27
26
25
24
(Room temp. Set temp.)
Set
temp.
Fig. 7-1-1 Auto setting of air volume
Table 7-1-1 Manual setting of FAN SPEED
*
For model :
RAS-07YKX, RAS-07YK-E, RAS-07YK-ES, RAS-07YKX-T
Indication of
FAN SPEED
LOW
MED
HIGH
HIGH Air volume
(m
3
/hr)
430 (
*
430)
510 (
*
490)
650 (
*
550)
(Room temp. Set temp.)
+1
0
Set
temp.
ON
OFF
OPERATION
display
ON ON
Compressor
Outdoor fan
(RY01)
Common relay
(RY02)
Fig. 7-2-1
(2) Relays RY01 and RY02 are turned on to
energize the outdoor unit, and a cool operation is
carried out.
1) When the FAN is set to AUTO, the indoor fan
motor operates as shown in Fig 7-2-2.
2) When the FAN is set to LOW, MED, or HIGH,
the indoor fan motor operates with a constant
in volume as listed in Table 7-1-1.
(Room temp. Set temp.)
MED
LOW(+)
LOW
LOW
(continuous)
+4
+3
+2
+1
0
RY01
OFF
Set
temp.
Manual
FAN
According
to the set
position
HIGH
AUTO
16
7-2-1. Louver Control
(1) Vertical air flow louvers
Positions of vertical air flow louvers are automatically
controlled according to the operation status (COOL,
AUTO, DRY, FAN ONLY). Besides, positions of
vertical air flow louvers can be arbitrarily set by
pushing the [SET] button. The louver position which
has been set by the [SET] button is stored in
microcomputer, and the louver is automatically set at
the stored position in the next operation.
(2) Swing
If the [AUTO] button is pushed during running opera-
tion, vertical air flow louvers start swinging. When
the [AUTO] button is pushed again, swinging stops.
7-3. DRY Operation
(MODE of the remote control : DRY)
(1) Compressor, outdoor fan and operation display
are controlled as shown in Fig. 7-3-1.
(Room temp. Set temp.)
Set
temp.
ON
+3
+2
+1
0
OFF
OPERATION
display
Compressor
Outdoor fan
(RY01)
Common relay
(RY02)
ON:6min.
OFF:4min.
ON:5min.
OFF:5min.
ON
Fig. 7-3-1
The microprocessor turns the compressor on
and off at regular intervals (4 to 6 minutes on
and/or off).
During the compressor off, the indoor fan will
operate in the super low position.
The indoor fan will operate in the AUTO
position.
(2) The pattern of operation depending on the
relation between room temperature and set
temperature is shown below:
Room temp.
Set temp.+1
Set temp.
Compressor
Outdoor fan
Indoor fan
L. *S.L. S.L.L. L. S.L. L.
ON ON ON ON
OFF OFF OFF
*Super Low
Fig. 7-3-2
17
7-4. AUTO Operation
(MODE of the remote control : AUTO)
(1) One of the 2 modes, Cooling or Dry is selected
according to room temperature at which opera-
tion is to start, as shown in Fig. 7-4-1. The Fan
mode will continue until room temperature
reaches a level at which another mode is
selected.
7-4-1. Temporary Auto
When the TEMPORARY button is pushed (1 sec),
the set temperature is fixed at 24°C and controlled in
accordance with the chart shown in Fig. 7-4-1.
Fig. 7-5-1
+2
+1
Set temp.
1H 2H TIME0H
(˚C)
ECONO. button
is pushed
Set temp.
is changed
Set temp.
is changed
7-5. ECONO. Mode
When the ECONO. button is pushed, during COOL
and AUTO operation, the OPERATION display is
turned off and the ECONO. display is lit and the
indoor unit operates quietly and mildly with
controlling airflow.
7-5-1. Cooling
(1) In the ECONO. mode, the set temp. by the
remote control is changed automatically as
shown in Fig. 7-5-1.
(2) Fan speed LOW
7-6. Low-Temperature Limit Control
(Cooling Operation)
The microprocessor detects the indoor heat ex-
changer temperature so as to prevent freezing up the
indoor heat exchanger.
Control is performed as shown in Fig. 7-6-1.
Compressor
Less than 5˚C continues
for 5 minutes
OFF
ON
Outdoor fan
7
Heat exchanger
temperature
5
(˚C)
Fig. 7-6-1
Fig. 7-4-1
Powerful
Cooling mode
Cooling mode
Dry mode
+4
+1
(The same cooling mode as the room temperature control is set at set temp. 1˚C)
The Louver moved downward. (DIRECT AUTO COOL)
(The same cooling mode as the room temperature control is set at set temp. 1˚C)
(The same dry operation as the room temperature control is set at set temp. 1˚C)
(Room temp. Set temp.)
18
7-7. Auto Restart Function
This unit is equipped with an Automatic restarting
function which allows the unit to restart and resume
the set operating conditions in the event of a supply
power shutdown without the use of the hand control.
The operation will resume without warning three
minutes after the power is restored.
INFORMATION
The AUTO RESTART FUNCTION is set not to work
on shipment from the factory, and so it is necessary
to set it to function as required.
7-7-1. How to Set the Auto Restart
To set the Auto Restart function, proceed as follows:
Access the TEMPORARY button located in the lower
right hand corner beneath the hinged front panel of
the indoor unit (please refer to section on PARTS
NAME). The power supply to the unit must be on -
the function will not be set if the power is off.
To enable the Auto Restart function, push the TEM-
PORARY button continuously for three seconds.
The unit will acknowledge the setting and beep three
times. The system will now restart automatically.
The above Auto Restart settings can be carried out:
During subsequent operation, the orange light goes on.
The Auto Restart function will not accept an instruction if timer operation with the remote control is selected.
During louver swing (AUTO) operation, after restarting by the Auto Restart function, the louver swing stops.
OPERATION
Push the TEMPORARY button
continuously more than three
seconds.
MOTION
Operating The green light is lit.
The system stops to operate. The green light is turned off.
about three seconds after
The unit beeps three times.
The system stops.
If the system is not required to stop at this time, use the remote control
and to restart.
TEMPORARY
0
3S
When the system is operating
OPERATION
Push the TEMPORARY button
continuously more than three
seconds.
MOTION
Stand-by
The system starts to operate. The green light will be lit.
about three seconds after
The unit beeps three times. The orange light will be lit.
The system is operating. The orange light is lighting.
If the system is not required to run at this time, push the TEMPORARY
button once more or use the remote control and the unit will stop.
TEMPORARY
0
3S
When the system is stand-by (not running)
19
7-7-2. How to Cancel the Auto Restart
To cancel the Auto Restart function, proceed as follows:
Repeat the setting procedure: the unit will acknowledge the instruction and beep three times.
The system will now be required to manually restart with the remote control after the main supply is turned off.
Cancellation is carried out:
When the system is stand-by (not running)
OPERATION
Push the TEMPORARY button
continuously more than three
seconds.
MOTION
Stand-by
The system starts to operate. The orange light will be lit.
about three seconds after
The unit beeps three times. The green light will be lit.
The system is operating.
If the system is not required to run at this time, push the TEMPORARY
button once more or use the remote control and Stop the unit.
TEMPORARY
0
3S
OPERATION
Push the TEMPORARY button
continuously more than three
seconds.
MOTION
Operating The orange light is lit.
The system stops to operate. The orange light is turned off.
about three seconds after
The unit beeps three times.
The system stops.
If the system is not required to stop at this time, use the remote control
and to restart.
TEMPORARY
0
3S
When the system is operating
During subsequent operation, the green light goes on.
7-7-3. In Case of Power Failure during the Timer Operation
(1) If ON-TIMER operation is reserved with setting of Auto Restart operation, it is cancelled with power failure.
(The OPERATION lamp on the main unit goes on and off to inform of power failure.) In that case, try to
reserve ON-TIMER operation once again.
(2) If OFF-TIMER operation is reserved without setting of Auto Restart operation, the reservation is cancelled
with power failure. (The OPERATION lamp on the main unit goes on and off to inform of power failure.) In that
case, try to reserve OFF-TIMER operation. When Auto Restart operation is set, OFF-TIMER reservation is
also cancelled with power failure.
20
8. INSTALLATION PROCEDURE
8-1. Safety Cautions
For general public use
Power supply cord of parts of appliance for Outdoor use shall be more than polychloroprene sheathed flexible cord
(design H05 RN-F), or cord designation 245 IEC 57.
CAUTION
TO DISCONNECT THE APPLIANCE FROM THE MAINS SUPPLY.
This appliance must be connected to the mains by means of a circuit breaker or a switch with a contact separation
of at least 3 mm.
If this is not possible, a power supply plug with earth must be used. This plug must be easily accessible after
installation. The plug must be disconnected from the power supply socket in order to disconnect the appliance
completely from the mains.
DANGER
ENGAGE DEALER OR SPECIALIST FOR INSTALLATION.
` FOR ELECTRICAL WORKS THE WIRING AND CABLES MUST BE PERFORMED IN COMPLIANCE WITH
NATIONAL WIRING STANDARD OR REGULATION.
IF INCORRECT AND INCOMPLETE WIRING IS CARRIED OUT, IT WILL CAUSE AN ELECTRICAL FIRE OR
ELECTRICAL SHOCK.
` USE THE SPECIFIED CABLE (1,5 to 2,0mm²) AND CONNECT TIGHTLY FOR INDOOR/OUTDOOR
CONNECTION. CONNECT TIGHTLY AND CLAMP THE CABLE SO THAT EXTERNAL FORCE WILL BE
ACTED ON THE TERMINAL.
` WIRE ROUTING MUST BE PROPERLY ARRANGED SO THAT CONTROL BOARD COVER IS FIXED
PROPERLY.
` DO NOT DAMAGE OR SCRATCH THE CONDUCTIVE CORE AND INNER INSULATOR OF THE CABLES.
` DO NOT DEFORM OR SMASH ON THE SURFACE OF THE CABLES. DO NOT PRESS OR FIX THE CORD
AND CABLES FIRMLY WITH STAPLES, etc.
` DO NOT USE THE EXTENSION CABLE FOR POWER SUPPLY CORD OR INTER-CONNECTING CABLE.
NEVER EXECUTE THE CONNECTION OF WIRING WITH OTHER METHOD THAN THE APPROVED ONE.
OTHERWISE, OVERHEAT, SMOKE OR FIRE MAY BE GENERATED BY CONTACT ERROR.
` TURN OFF MAIN POWER SUPPLY AND BREAKER BEFORE ATTEMPTING ANY ELECTRICAL WORK.
MAKE SURE ALL POWER SWITCHES AND BREAKER TURN OFF. FAILURE TO DO SO MAY CAUSE
ELECTRIC SHOCK.
` CONNECT THE CONNECTING CABLE CORRECTLY. IF THE CONNECTING CABLE IS CONNECTED BY
WRONG WAY, ELECTRIC PARTS MAY BE DAMAGED.
` GROUNDING WIRE WORKS MUST BE CONSTRUCTED IN COMPLIANCE WITH INSTALLATION MANUAL.
` DO NOT INSTALL NEAR CONCENTRATIONS OF COMBUSTIBLE GAS VAPORS.
FAILURE TO FOLLOW THIS INSTRUCTION CAN RESULT IN FIRE OR EXPLOSION.
` TO PREVENT OVERHEATING THE INDOOR UNIT AND CAUSING A FIRE HAZARD. PLACE THE UNIT WELL
AWAY (MORE THAN 2M.) FROM HEAT SOURCE SUCH AS RADIATORS, HEAT REGISTORS. FURNACE,
STOVES, etc.
` IF A REFRIGERATION GAS LEAKS DURING INSTALLATION, BE SURE TO PERFORM VENTLATION.
IF THE REFRIGERANT GAS COMES INTO CONTACT WITH FIRE, A POISONOUS GAS MAY OCCUR.
WHEN INSTALLING AN AIR CONDITIONER, DO NOT ALLOW AIR OR MOISTURE TO REMAIN IN THE
REFRIGERATION CYCLE. OTHERWISE, PRESSURE IN THE REFRIGERATION CYCLE MAY BECOME
ABNORMALLY HIGH SO THAT A RUPTURE OR PERSONAL INJURY MAY BE CAUSED.
` BE SURE TO USE THE CORD-CLAMPS AND THE ELECTRIC PARTS COVER TO THE SPECIFIED
POSITION WITH ATTACHED TO THE PRODUCT. MOUNT THE ELECTRIC PARTS COVER FOR CABLES OF
CONNECTING SECTION FIRMLY WITH THE SCREWS.
21
WARNING
Never modify this unit by removing any of the safety guards or by-passing 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.
Before doing the electrical work, attach an approved plug to the power supply cord.
And make sure the equipment to be earthed.
Appliance shall be installed in accordance with national wiring requlations.
If you detect any damage, do not install the unit. Contact your Toshiba dealer immediately.
CAUTION
Exposure of unit to water or other moisture before installation will result in an electrical short.
Do not store in a wet basement or expose to rain or water.
After unpacking the unit, examine it carefully for possible damage.
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 and discharged air might disturb users neighbors.
To avoid personal injury, be careful when handling parts with sharp edges.
Please read the installation manual carefully before installing the unit. It contains further important
instructions for proper installation.
UK Plugs and Sockets etc (Safety) Regulations 1994
SI Number 1768
With regard to Schedule 3, Item 7 of the above UK Regulations, this appliance must be permanently
connected to the fixed wiring of the main electrical supply by means other than the use of an approved
13 Amp. plug-top as outlined in the Regulations.
Electrical work must be carried by suitably qualified persons and in accordance with all relevant safety
standards and codes of practice.
We recommend that the power supply for this appliance is derived from a suitably protected dedicated circuit.
(for U.K. only)
– 22
8-2. Installation Diagram of Indoor and Outdoor Units
For installation of the indoor unit, use the paper pattern on the back.
Clip anchor
Hook
66 mm or more
Hook
1 Installation
plate
5 Mounting screw
Hook
120 mm or more
Front cabinet
Front panel
Air filter
(Attach to the front cabinet)
(Attach to the front cabinet)
Shield pipe
Pan head
wood screw
4 Remote
control
holder
8
2 Wireless
remote
control
5 Deodorizing
filter
7 Purifying
filter
100 mm or more
400 mm or more
Loop the connective cable
(about 100 mm in diameter
and 300~350 mm long).
600 mm or more
Be sure to use the
Electric parts cover
45 m
m
or m
ore
600 mm or more
2
Wireless remote control
3
Batteries
Cover
6 mm thick heat resisting
polyethylene foam
Bottom
Rear
Right
Rear left
Left
Cut the piping hole
sloped slightly
Wall
120 mm
or more
For the rear left and left piping
Do not allow the drain hose to
get slack.
Make sure to run the drain
hose sloped downward.
The auxiliary piping can be
connected the left, rear left,
rear, right or bottom.
Insulation of refrigerant pipes
insulates the pipes separately,
not together.
Before install the wireless
remote control
• With the remote control cover
open, load the batteries
supplied correctly, observing
their polarity.
Extension
drain hose
(Option:
RB-821SW)
Insert the cushion between
the indoor unit and wall,
and lift indoor unit to make
work easier.
23
8-3. Installation
8-3-1. Optional Parts
<Anchor bolt arrangement of outdoor unit>
600mm
Air inlet
230mm
Air outlet
Fig 8-3-1 Air outlet
Secure the outdoor unit with the anchor bolts if the
unit is likely to be exposed to a strong wind.
Use ø8 or ø10 anchor bolts.
Part
code
A
B
C
Parts name
Refrigerant piping
Liquid side : ø6,35 mm
Gas side : ø9,52 mm
Pipe insulating material
(polyethylene foam, 6 mm thickness)
Putty, PVC tapes
Q’ty
Each
one
1
Each
one
Others
Name
Installation manual
Owners manual
This model is not equipped with an extension drain hose.
Option : For the extension drain hose, use an optionally
available RB-821SW or commercially available one.
8-3-2. Installation Parts
Purifying filter x 1
Part
No.
Name of parts
Q'ty
Name of parts
Q'ty
Part
No.
1
7
8
2
4
3
5
6
Installation plate x 1
Wireless remote control x 1
Batteries x 2
Mounting screw ø4 x 25 x 6
Deodorizing filter x 1
Remote control holder x 1
Pan head wood screw
ø3,1 x 16 x 2
24
8-4. Indoor Unit
K Installation place
A place which provides the spaces around the
indoor unit as shown in the diagram in section 8-2.
A place where there is no obstacle near the air inlet
and outlet.
A place which allows an easy installation of the
piping to the outdoor unit.
A place which allows the front panel to be opened.
CAUTION
Direct sunlight to the indoor unit wireless
receiver should be avoided.
The microprocessor in the indoor unit should
not be too close to r-f noise sources.
(For details, see the owners manual.)
<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.
Fig. 8-4-1
(Top view)
Indoor unit
5m
5m
45˚
45˚
Remote
control
Reception
range
*:Axial distance
Remote
control
Reception
range
7m
(Side view) Indoor unit
*7m
75˚
8-4-1. Cutting a Hole and Mounting
Installation Plate
<Cutting a hole>
When installing the refrigerant pipes from the rear.
Fig. 8-4-2
(1) After determining the pipe hole position with the
mounting plate (80 mm ), drill the pipe hole
(ø65 mm) at a slight downward slant to the
outdoor side.
NOTE :
When drilling the wall that contains a metal lath,
wire lath or metal plate, be sure to use a pipe hole
brim ring sold separately.
<Mounting the installation plate>
For installation of the indoor unit, use the paper
pattern on the back.
The center of the piping slot
is above the arrow.
The center of the pipe
hole is above the arrow.
80mm
Pipe hole
65mm
40,5
mm
Fig. 8-4-3
Indoor unit
Pipe
hole
65,5mm
Thread
Weight
1
Installation
plate
5
Mounting
screw
Pipe hole
65,5mm
Anchor bolt hole
25
<When the installation plate is directly
mounted on the wall>
(1) Securely fit the installation plate onto the wall by
screwing it in the upper and lower parts to hook
up the indoor unit.
(2) Install the installation plate horizontally in the
wall.
(3) To mount the installation plate on a concrete wall
with anchor bolts, utilize the anchor bolt holes as
shown in the above figure.
CAUTION
When installing the installation plate with mount-
ing screw, do not use the anchor bolt hole.
Otherwise the unit may fall down and result in
personal injury and property damage.
CAUTION
Failure to firmly install the unit may result in per-
sonal injury and property damage if the unit falls.
In case of block, brick, concrete or similar type
walls, make holes in the wall.
Insert clip anchors for appropriate
U
mounting
screws.
NOTE :
Install the installation plate using 4 to 6 pieces of
mounting screw securing four corners with screws.
8-4-2. 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.
CAUTION
Use power specified above table.
This appliance can be connected to the mains
in either of the following two ways.
(1) Connection to fixed wiring:
A switch or circuit breaker which disconnects
all poles and has a contact separation of at
least 3 mm must be incorporate in the fixed
wiring. An approved circuit breaker or
switches must be used.
(2) Connection with power supply plug:
Attach power supply plug with power cord and
plug it into wall outlet. An approved power
supply cord and plug must be used.
NOTE :
Perform wiring works so as to allow a generous
wiring capacity.
*
No adjustment is necessary.
Fig. 8-4-4
Installation plate
(Keep horizontal direction)
Anchor bolt
Projection
15mm
or less
5mm dia, hole
Clip anchor
5
Mounting screw Ø4 x 25
MODEL
RAS-07YKX
RAS-07YK-E
RAS-10YKX
RAS-11YKX
RAS-10YK-E
RAS-10YK-ES
RAS-10YK-HX
RAS-07YKX-T RAS-10YKX-T
RAS-07YK-ES
Power source 50Hz
*
220240V
~
Single-phase 50Hz
*
220V
~
Single-phase
Maximum running current 5A 7,5A 5A 7,5A
Plug socket & fuse rating 16A
Wiring 1mm
2
or more
26
8-4-3. Wiring Connection
WARNING
To plug the cable in the plug receptacle, take the
following precaution.
THIS APPLIANCE MUST BE EARTHED.
IMPORTANT
THE WIRES IN THIS MAINS LEAD ARE COLORED
IN ACCORDANCE WITH THE FOLLOWING CODE:
Place your finger on the lower part and push up
to open the screw cap.
(1) Open the screw caps and remove the two screws
securing the front cabinet.
(2) Close the screw caps as behind.
(3) Open the vertical airflow louver horizontally by
hand.
(4) Slightly open the lower part of the front cabinet
then pull the upper part of the front cabinet
toward you to remove it from the rear plate.
Fig. 8-4-6
How to open the screw cap
3
2
2
1
1
4
4
Vertical air flow louver.
Fig. 8-4-5
As the colors of the flexible cord of this appliance
may not correspond with the colored markings, to
identify terminals in your plug, as follows:
Connect BROWN colored core to plug terminal
marked letter L.
Connect BLUE colored core to plug terminal marked
letter N.
Connect GREEN AND YELLOW colored core to plug
terminal marked Earth Symbol
.
The installation of the cables has to be done in such
a way that the basic insulated wires for the infrared
sensor can not be touched.
<How to remove the front cabinet>
L
N
L
N
-LIVE
-NEUTRAL
-EARTH
: Brown
: Blue
: Green and Yow
Taking out the power cord
Cut off the slitted portion in the side face of the
rear panel to take out the power cord. After
this, remove burrs, sharp edges, etc., to
smooth the cut face..
<How to connect the power cord>
(For RAS-07YK-E, RAS-07YK-ES, RAS-10YK-E,
RAS-10YK-ES
only)
For the air conditioner that has no power cord,
connect a power cord to it as mentioned below.
After removing the front cabinet, remove the
terminal cover and the cord clamp.
Connect and secure the power supply cord and
secure the cord clamp and the terminal cover.
Cut the rear panel following the cutting mark and
put the power supply cord through the notch.
Be sure to smooth out the notch with a file, etc.
Slitted portion
Cord clamp
Terminal cover
Screw
Power supply
cord
Terminal block
Earth line
Screw
Screw
L
N
Fig. 8-4-7
<Stripping length of power cord>
NOTE :
Use standard wire only.
Wire type: More than H05-RN-F
Fig. 8-4-8
Earth line
40mm
10mm
10mm
30mm
L
N
27
<How to connect the connecting cable>
Wiring of the connecting cable can be carried out
without removing of the front panel.
(1) Remove the front panel.
Fully open the front panel. Disengage the
support arm located in the upper center while
pushing its handle leftwards, and then remove
the front panel toward you.
(2) Remove the terminal cover and cord clamp.
(3) Insert the connecting cable (according to local
codes) into pipe hole on the wall.
(4) Take out the connecting cable through the cable
slot on the rear panel so that it is exploded by
about 15 cm long in the front side.
(5) Insert the connecting cable fully into the terminal
block and secure it by screw tightly.
(6) Tightening torque:1,2 Nm (0,12 kgfm)
(7) Secure the connecting cable with the cord clamp.
(8) Fix the terminal cover and front panel on the
indoor unit.
CAUTION
Be sure to refer the wiring system diagram
labeled inside the front panel.
Check local electrical codes and also any
specific wiring instructions or limitation.
For a three conductor cable
NOTE :
Use stranded wire only.
Wire type:More than H05 RN-F
Fig. 8-4-10
10mm
40mm
50mm
10mm
Earth line
1
2
Fig. 8-4-9
<Stripping length of connecting cable>
<How to install the front cabinet on the
indoor unit>
Install the front cabinet through the opposite order of
How to remove the front cabinet.
When the panel is removed and mounted again, take
the following actions:
After fastening the two screws, one each at the left
and right of the air outlet, be sure to push the upper
center
Q
right end
R
, left end
S
and the lower
center
T
of the air outlet, and confirm that no gap is
left between the front cabinet and the rear plate.
If cooling (dry) operation is made without
pushing the air outlet, dew can be deposited on
the front cabinet surface. In addition a gap
between the front cabinet and the rear plate will
become wider, spoiling the appearance.
3
1
2
4
Push Push
Push
Push
Fig. 8-4-11
8-4-4. Piping and Drain Hose Installation
<In case of rightward piping>
After scribing slits of the front panel and the rear
panel by a knife or a marking-off pin, cut them by a
pair of nippers or the like.
Fig. 8-4-13
Slit
(rear panel)
Slit
(front panel)
Slit (rear panel)
Slit (front panel)
Fig. 8-4-12
<In case of downward piping>
After scribing the slit of the front panel and slit in
the lower part of the rear panel by a knife or a
marking-off pin, cut them by a pair of nippers or the
like.
Terminal block
Cord
clamp
Screw
Screw
Connecting cable
Earth
line
Terminal
cover
Screw
2
1
Connecting
cable
about 15cm
28
<Left-hand connection with piping>
Bend the connecting pipe so that it is laid within 43
mm above the wall surface. If the connecting pipe is
laid exceeding 43 mm above the wall surface, the
indoor unit may unstably be set on the wall. When
bending the connecting pipe, make sure to use
spring bender so as not to crush the pipe.
Bend the connection pipe within a radius of 30
mm.
To connect pipe after installation of unit (figure)
196mm
96mm
Side of liquid flow
Side of gas flow
Outward form of indoor unit
(To the forefront of flare)
R 30mm (Use polisin or the like for bending pipe.)
43mm
Use the handle of screwdriver,etc.
80
˚
Fig. 8-4-14
NOTE :
If the pipe is bent incorrectly, the indoor unit may
unstably be set on the wall.
After passing the connecting pipe through the pipe
hole, connect the connecting pipe to auxiliary pipes
and wrap the facing tape around them.
CAUTION
Bind the auxiliary pipes (two) and connecting
cable with facing tape tightly. In case of leftward
piping and rear-leftward piping, bind the
auxiliary pipes (two) only with facing tape.
Indoor unit
Connecting
cable
Installation
plate
Auxiliary
pipes
Carefully arrange pipes so that any pipe does
not stick out of the rear plate of the indoor unit.
Carefully connect the auxiliary pipes and
connecting pipes to each other and cut off the
insulating tape wound on the connecting pipe
to avoid double-taping at the joint, moreover,
seal the joint with the vinyl tape, etc.
Since dewing results in a machine trouble,
make sure to insulate both the connecting
pipes. (Use polyethylene foam as insulating
material.)
When bending a pipe, carefully do it not to
crush it.
8-4-5. Indoor Unit Installation
(1) Pass the pipe through the hole in the wall, and
hook the indoor unit on the installation plate at
the upper hooks.
(2) Swing the indoor unit to right and left to confirm
that it is firmly hooked up on the installation plate.
(3) While pushing the indoor unit onto the wall by the
lower part, hook it up on the installation plate by
the lower part. Pull the indoor unit toward you by
the lower part to confirm that it is firmly hooked
up on the installation plate.
Push
1
Installation
plate
Hook here
(1)
(2)
Hook
Fig. 8-4-15
For detaching the indoor unit from the installation
plate pull the indoor unit toward you while pushing
its bottom up by the specified parts.
Fig. 8-4-16
Push Push
29
8-4-6. Drainage
(1) Run the drain hose sloping downwards.
NOTE :
Hole should be made at a slight downward slant to
the outdoor side.
50 mm
or more
Do not rise the drain hose.
Do not form the drain hose
into the wared shape.
Do not put the
drain hose end
into water.
Do not put the drain
hose end in the
drainage ditch.
Fig. 8-4-19
Space for pipes
Wall
Drain guide
Fig. 8-4-17
(2) Put water in the drain pan and make sure that the
water is drained outdoors.
(3) When connecting extension drain hose, insulate
the connecting part of extension drain hose with
shield pipe.
Shield pipe
Extension drain hose
Inside the room
Drain hose
Fig. 8-4-18
CAUTION
Arrange the drain pipe for proper drainage from
the unit.
Improper drainage can result in damage to
property.
This air conditioner has the structure designed to
drain water collected from dew, which forms on the
back of the indoor unit, to the drain pan.
Therefore, do not store the power cord and other
parts at a height above the drain guide.
8-5. Outdoor Unit
Installation place
A place which provides the spaces around the
outdoor unit as shown in the diagram in page 19.
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 allowable length of the connecting pipe is up to
10 m.
An allowable head level is up to 5 m.
A place where the drain water does not raise any
problem.
CAUTION
(1) Install the outdoor unit without anything
blocking the air discharging.
(2) When the outdoor unit is installed in a place
exposed always to a strong wind like a coast or
on a high story of a building, secure the normal
fan operation using a duct or a wind shield.
(3) Specially in windy area, install the unit to
prevent the admission of wind.
Fig. 8-5-1
CAUTION
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 coast.
A place full of sulfide gas.
A place where high-frequency waves are likely
to be generated as from radio equipment,
welders, and medical equipment.
Strong
wind
30
8-5-1. Refrigerant Piping Connection
<Flaring>
(1) Cut the pipe with a pipe cutter.
90˚
Obliquity
Roughness
Warp
Fig. 8-5-2
(2) Insert a flare nut into the pipe, and flare the pipe.
Outer
dia.
6,35mm
9,52mm
A (mm) R22/R410A
Imperial Rigid
1,0 ~ 1,5/ 0,5 ~ 1,0/
1,5 ~ 2,0 1,0 ~ 1,5
1,0 ~ 1,5/ 0,5 ~ 1,0/
1,5 ~ 2,0 1,0 ~ 1,5
Die Pipe
A
Fig. 8-5-3
Fig. 8-5-4
<Tightening connection>
Align the centers of the connecting pipes and tighten
the flare nut as far as possible with your fingers.
Then tighten the nut with a spanner and torque
wrench as shown in the figure.
CAUTION
Do not apply excess torque. Otherwise, the
nut may crack depending on the installation
conditions.
Half union or packed valve
Flare nut
Externally
threaded
side
Internally
threaded
side
Use a wrench
to secure.
Use a torque wrench
to tighten.
8-5-2. Vacuum Pumping
INFORMATION
In order to prevent any other refrigerant from being
charged accidentally, each port of the manifold has
been changed in shape.
Differences in Port Size between
Conventional R22 and R410A
Outer dia.
6,35mm
9,52mm
Tightening touque
Nm (kgfm)
16 ~ 18 (1,6 ~ 1,8)
30 ~ 42 (3,0 ~ 4,2)
Port
size
Manifold for R22 Manifold for R410A
7/16 UNF 1/2 UNF
20 threads per inch 20 threads per inch
AIR PURGE
Evacuate the air in the connecting pipes and in
the indoor unit using vacuum pump.
Do not use the refrigerant in the outdoor unit.
For details, see the manual of vacuum pump.
<Use of vacuum pump>
(1) Connect the charge hose (A) from the manifold
valve to the charge inlet of the gas side packed
valve.
(2) Connect the charge hose (B) to the port of
vacuum pump.
(3) Open fully the low pressure side handle of the
manifold valve.
(4) Operate the vacuum pump.
(5) Close the low pressure side handle of manifold
valve after vacuumizing and stop the vacuum
pump.
Continue vacuumizing more than 15 minutes and
check the pressure gage indicates 0,1MPa
(76 cmHg).
(6) Open the stems of packed valves A and B all the
way.
(7) Securely tighten the stem cap to each of the
packed valve stems.
31
VP
Outdoor unit
Charge
hose (B)
Service port
Packed
valve
A
B
C
D
Gas
(Ø9,52)
Liquid
(Ø6,35)
Indoor unit
Lo Hi
High pressure
side handle
Pressure gage
Manifold valve
Low pressure side handle
Charge hose (A)
Fig. 8-5-5
CAUTION
KEEP IMPORTANT 4 POINTS FOR
INSTALLATION (PIPING WORK)
(1) Take away dust and moisture (Inside of the
connecting pipes.)
(2) Tight connection (between pipes and unit)
(3) Evacuate the air in the connecting pipes using
VACUUM PUMP.
(4) Check gas leak (connected points)
<Packed Valve Handling Precautions>
Open the valve stem all the way out; so not try
to open it beyond the stopper.
Securely tighten the valve stem cap with the
wrench or like.
Valve stem cap tightening torque is as follows;
Gas pipes side (Ø9,52) : 30 ~ 42 Nm (3,0 ~ 4,2 kgfm)
Liquid pipe side (Ø6,35) : 16 ~ 18 Nm (1,6 ~ 1,8 kgfm)
Service port cap : 9 ~ 10 Nm (0,9 ~ 1,0 kgfm)
<A5 mm hexagon wrench is required.>
8-5-3. Wiring Connection
(1) Remove the electric parts cover from the outdoor
unit. (1 screw)
(2) Connect the connecting cable to the terminals as
identified with their respective matched numbers
on the terminal block of indoor and outdoor units.
(Strip the sheath of connecting cable with follow-
ing stripping length to and insert into the terminal
block.)
(3) When connect the connecting cable to outdoor
unit terminal, make a loop as shown in the
installation diagram of indoor and outdoor unit, to
prevent water coming in the outdoor unit.
(4) Insulate the unused cords (conductors) with
water coming in the outdoor unit. Process them
so that they do not touch any electrical or metal
parts.
<Stripping length of connecting cable>
60mm
1
12
10mm
10mm
50mm
Connecting
cable
Screw
Terminal block
Terminal
screw
Cord clamp
Earth line
2
Earth line
For a three conductor cable
Fig. 8-5-7
CAUTION
Wrong wiring connections may cause some
electrical parts to burn out.
Be sure to comply with local code on running
the wire from the indoor unit to outdoor unit.
(size of wire and wiring method etc.)
Every wire must be connected firmly.
NOTE :
Wipe type : More than H05 RN-F
5mm
Flare nut
Stopper
Wrench
Valve body
Valve stem
Service port cap
Service port
Valve stem cap
Note : Service port at Gas pipes valve only.
Fig. 8-5-6
32
8-6. Others
8-6-1. Gas Leak Test
Fig. 8-6-1
Check the flare nut connections, valve stem cap
connections and service cap connections for gas
leak with a leak detector or soap water.
8-6-2. Test Operation
To switch the TEST RUN (COOL) mode, push
TEMPORARY button for 10 sec. (The beeper will
make a short beep.)
TEMPORARY
TEMPORARY
button
Fig. 8-6-2
8-6-3. Auto Restart Setting
This product is designed so that, after a power
failure, it can restart automatically in the same
operating mode as before the power failure.
INFORMATION
The product was shipped with Auto Restart
function in the off position. Turn it on as required.
*
See detail in section 7-7. Auto Restart Function
Flare nut connections (indoor unit)
Electric parts
cover
Flare nut
connections
(Outdoor unit)
A
B
C
D
Valve stem cap
connection
Service port
Valve stem cap connection
33
9. TROUBLESHOOTING CHART
TROUBLESHOOTING PROCEDURES :
Following details of What to be pre-checked first, make sure of the basic items.
When there is no trouble corresponding to above, check in detail the faulty parts following How to judge
faulty parts by symptoms later.
9-1. What to be Prechecked First
9-1-1. Power Supply Voltage
The line voltage must be AC 220240V (220V for RAS-07YKX-T, RAS-10YKX-T).
If the line voltage is not within this range, this air conditioner may not work normally.
9-1-2. Incorrect Cable Connection between Indoor and Outdoor Units
The indoor unit is connected to the outdoor unit with 3 cables. Make certain that the indoor and outdoor units
have been connected properly, with terminals assigned the same numbers wired to each other. If the connectors
are not connected as specified, the outdoor unit will not operate normally.
9-1-3. Misleading but Good Operations (Program Controlled Operation)
The microcomputer performs the operations listed in Table 9-1-1 to control the air conditioner. If a claim is made
on the operation, check whether it corresponds to the contents in the Table 9-1-1. If it does, it is an indispensable
operation for the control and maintenance of the air conditioner: it is not a failure of the unit.
Table 9-1-1
No. Operation of air conditioner Description
1
When the power plug or the power
cord of the indoor unit is inserted,
the OPERATION lamp on the
setting indication part blinks.
The OPERATION lamp blinks, indicating that power is turned on.
If this happens, push the START/STOP button once to cause the lamp to stop
blinking. A power outage also causes the lamp to blink.
2
Fan speed remains unchanged in
the dry mode.
Fan speed is automatically controlled in the dry mode.
3
The compressor will not switch on
or off even when the thermo. control
is operated in the dry operation.
In the dry mode, the compressor goes on and off at regular intervals,
independent of the thermo. control.
4
Compressor does not work though
room temperature is in the range of
turning the compressor on.
Compressor does not work while the compressor restart delay (3-min.) timer
is active. The same is true after power is turned on, as the time is still active.
5
During automatic operation, the
operation mode changes.
After selection of the cooling and dry operation, the operation mode is
selected again when the compressor off mode continues for 15 min.
according to the room temperature. And after selection of the dry operation,
the condition of the room temperature which is Room temp. >Set temp.+1
and which is Room temp.<Set temp.4 continues for 15 min., the operation
mode is selected again.
6
When the power is turned on, the
operation starts automatically.
When the auto restart controlling is selected, the operation is performed
automatically in the previous operation mode after the power supply has
been turned on.
34
9-2. Primary Judgement of Trouble Sources
9-2-1. Role of Indoor Unit Controller
The indoor unit controller receives the operation commands from the remote control and assumes the following
functions.
Measurement of the draft air temperature of the indoor heat exchanger by using the thermo sensor (TA).
Louver motor control
Control of the indoor fan motor operation
Control of the LED display
Control of the outdoor unit compressor and the outdoor fan motor.
9-2-2. Display of Abnormalities and Judgement of the Abnormal Spots
The indoor unit of this machine observes the operation condition of the air conditioner and displays the contents
of the self-diagnosis as block displays on the display panel of the indoor unit.
Table 9-2-1
Block display Description
A
OPERATION display blinking (1 Hz) Power failure (when power is ON)
B
OPERATION display blinking (5 Hz) Thermo. sensor (TA) short/break
C
OPERATION display blinking (5 Hz)
Heat exchanger sensor (TC) short/break
D
OPERATION display blinking (5 Hz) Indoor fan lock, abnormality of indoor fan
E
OPERATION display blinking (5 Hz) Indoor P.C. board failure
F
OPERATION, TIMER and FAN-ONLY display blinking (5 Hz)
Gas shortage, other refrigerant cycle trouble
Heat exchanger sensor open/break/short
Overload relay trouble
Symptom Check Primary judgement
Remote control is not possible.
The indoor part (including the
remote control) is defective.
No reaction on remote
control operation
Turn off the power once, turn it
on again and try to operate the
remote control again.
Remote control is possible. OK.
The compressor operates.
The outdoor part is defective.
(outdoor fan motor)
The outdoor fan does
not rotate
The compressor does not operate. The inside part is defective.
(1) Judgement from defective operation or abnormal operation
Table 9-2-2
35
(2) Self-diagnosis with remote control
With the indoor unit control, self-diagnosis of protective circuit action can be done by turning the remote
control operation into service mode, operating the remote control, observing the remote control indicators
and checking whether TIMER lamp blinks (5 Hz).
[ METHOD ]
Push the [CHK] button with a thin tip of pencil or
others. The remote control display shows .
Push key of TEMP. one by one.
The receiving beep Pi! is heard, and the timer
lamp of the air conditioner blinks.
(5 times for 1 sec.)
Operating key, the 35 check codes from
to are sent.
To reduce the check code number, push the
key of TEMP.
> <> <> <--
--> <> <---> <
If the check code agrees with the error code, the
receiving beep continues ringing Pi, Pi, Pi ...
(for approx.10 sec.), and all the LED of air
conditioner blink. (5 times for 1 sec.)
[ To release the servicing check ]
Push the [START/STOP] button.
Display screen returns to one before check.
The servicing check operation can be also
released by [ACL] button.
Hr.ON OFF TIMER
C
MODE FANTEMP.
TEMP.
START/STOP
TIMER
WC-E1BE
ECONO.
ON OFF RSV CNL
ACL CHK
FAN
SET
MODE
AUTO
AUTO
COOL
DRY
FAN ONLY
AUTO
LOW
MED.
HIGH
1
2
3
4
5
6
1
4
6
2
3
Block level Diagnosis function
Check
code
Block
Check
code
Symptom
Air
Co n ditio ne r
status
Condition
Judgment and action
Thermo. sensor
short/break.
Continued
operation
Indicated when
detected abnormal
1.Check thermo. sensor.
2.If it is OK, check P.C. board.
Heat exchanger
sensor
short/break.
Continued
operation
Indicated when
detected abnormal
1.Check heat exchanger
sensor.
2.If it is OK, check P.C. board.
Indoor fan lock,
abnormality of
indoor fan or
thermal fuse break.
All off
Indicated when
detected abnormal
Indoor
P.C. board
Abnormality of
other indoor unit
P.C. board.
All off Indicated when
detected abnormal
Replace P.C. board.
Contents detected by the check codes to are stored in memory of the microcomputer even if the power supply
is turned off. Therefore, contents of operations in the past are all displayed.
Table 9-2-3
36
9-3. Troubleshooting Flowcharts
9-3-1. Power can not be Turned on (No Operation at All)
<Preliminary checks>
(1) Is the supply voltage normal?
(2) Is the connection to the AC output OK.?
*
Be sure to disconnect the motor connector CN10 after shut off the power supply, or it will be a cause of
damage of the motor.
P.C. board
is defective.
Symptom
Operation
Check Items
Main cause
Countermeasure
Shut off the power supply
from AC outlet once and
turn it on after 5 seconds.
Does the OPERATION
lamp blink?
Does the transmission
indicator of remote
control flash normally and
transmit certainly?
Remote control
is defective.
Replace the
remote control.
(No problem)
Does the fuse
(F01) blow?
Replace the main
P.C. board.
Wrong wiring of
AC cord or connecting
cable is defective.
Replace the
thermal fuse set.
Check connection.
Is the indication voltage
(DC12V or 5V) of main
PC board correct?
Is the voltage
across C02 measured
DC310V~340V?
Refer to the paragraph
Pre-check, or defective circuit
before power P.C. board block.
Shut off the power
supply once, and turn
it on again after dis-
connecting the motor
connector CN10
*
.
Is the
secondary voltage
of SW transformer
measured DC12V,
and DC7V?
Motor is defective.
Is the secondary
voltage of SW
transformer (T01)
measured DC12V,
and DC7V ?
YES
SW transformer
(T01) or Tr (Q01)
for power supply
is defective.
Parts (R21, R22, SG01,
C15, C01, DB01, C02,
Q01, T01) are defective.
Does the power turn
on by pushing the
[START/STOP] button
of the remote control?
NO
YES
YES
NONO
YES
YES
NO
NO
NO
YES
YES
YES
NO
YES
YES
NO
Does the CN13
connector the wrong
connecting?
Does the thermal
fuse blow?
(Under PF. Terminal)
NO
NO
Replace the main
P.C. board.
Re-wiring the cable.
37
9-3-2. Power can not be Turned on after Replacing Indoor P.C. Board
<Checking Procedure>
RY01
C02
3
43
4
RY02
Brown
N L
Power
terminal
block
T02
PC board
Blue
White
Black
1 2
Indoor
terminal
block
To the paragraph of
No Power turns on.
Does the OPERATION
lamp blink?
YES
NO
Connect the AC
Power supply
Return the wiring of the
power relay is returned to
the normal procedure.
Is it wired as shown
in Figure below?
YES
NO
Shut off the power supply
from AC outlet once and
turn it on after 5 seconds.
Does the OPERATION lamp blink?
Does the power turn on by
pushing the [START/STOP] button
of the remote control?
Is cable connection
between indoor and outdoor
units correct?
**
for model RAS-07YKX-T, RAS-10YKX-T
Check items as following procedure
in 9-3-4, 9-3-5, 9-3-6.
Replace the
P.C. board.
See Power can not be turned on.
Relays (RY01, RY02)
or IC31 or IC30 is failure.
Correct cabling between
indoor and outdoor units.
NO
NO
NO
NO
YES
YES
YES
YES
See Power can not be turned on.
Is AC 220240V (AC220V)
**
supplied between terminal block
1 - 2 ?
9-3-3. Outdoor Unit does not Operate
38
9-3-4. Only Compressor does not Operate
Shut off the power supply
from AC outlet once and
turn it on after 5 seconds.
Does the OPERATION lamp blink?
Does the power turn on by
pushing the [START/STOP] button
of the remote control?
Is cable connection between indoor
and outdoor units correct?
Replace the
P.C. board.
See Power can not be turned on.
NO
NO
NO
NO
YES
YES
YES
YES
Is the voltage across the outdoor terminal
( 1 - 2 ) AC 220240V (AC 220V)
**
?
YES
Are all the cords for compressor normal?
Is the compressor motor winding normal?
(Check the winding resistor.)
Is the capacitor for compressor normal?
Is the overload relay normal?
Does the compressor start?
Compressor starts but
it stops after a while?
Cables between indoor and
outdoor units are defective.
Re-wire or replace the defective cords.
Compressor is defective.
Capacitor is defective.
Overload relay is defective.
Compressor is defective.
Correct cabling between indoor
and outdoor units.
NO
NO
NO
NO
NO
NO
YES
YES
YES
YES
YES
YES
See Power can not be turned on.
YES
Is the gas quantity normal?
(Check the pressure)
Gas shortage (Gas leakage)
NO
Compressor is defective
Is the voltage across the indoor terminal
( 1 - 2 ) AC 220240V (AC 220V)
**
?
Relays (RY01, RY02)
or IC31 or IC30 is failure.
**
for model RAS-07YKX-T, RAS-10YKX-T
39
9-3-5. Only Outdoor Fan does not Operate
Shut off the power supply
from AC outlet once and
turn it on after 5 seconds.
Does the OPERATION lamp blink?
Does the power turn on by
pushing the [START/STOP] button
of the remote control?
Is cable connection between indoor
and outdoor units correct?
Replace the
P.C. board.
See Power can not be turned on.
NO
NO
NO
NO
YES
YES
YES
YES
Is the outdoor fan motor winding normal?
(Check the winding resistance)
Is the capacitor for compressor normal?
Outdoor fan motor is defective.
Cables between indoor and
outdoor units are defective.
Outdoor fan motor is defective.
Correct cabling between indoor
and outdoor units.
NO
NO
NO
NO
YES
YES
YES
YES
Are all the cords for outdoor
fan motor normal?
Correct the wire or
replace the defective cords.
Capacitor for outdoor
fan motor is defective.
See Power can not be turned on.
Relays (RY01, RY02)
or IC31 or IC30 is failure.
Is the voltage across the indoor terminal
( 1 - 2 ) AC 220240V (AC 220V)
**
?
Is the voltage across the outdoor terminal
( 1 - 2 ) AC 220240V (AC 220V)
**
?
**
for model RAS-07YKX-T, RAS-10YKX-T
40
9-3-6. Only the Indoor Fan does not Operate
< Check procedure >
YES
NO
Shut off the power
supply once.
Does the fan
stop in no operating
status?
Control P.C. board is defective.
Replace the P.C. board.
Start the operation
with low fan setting
in cool operation.
Does AC 120V
or higher voltage apply
to between red and black
lead of fan motor?
Does the fan rotate?
Change the setting of
cooling to high fan.
Does the fan speed
become higher?
Operation stops
Normal
Shut off the power supply.
Does the cross
flow fan rotate
normally?
Turn on the power supply.
Is the rotation signal
(DC+5V-0V) output between
4
(blue lead wire) and
2 (black
lead wire) of the motor connector
(CN10) when rotating the cross
flow fan by hand in no operating
status ? (2 pulses/one turn)
Replace the control
P.C. board.
Replace the P.C. board.
Motor control circuit failure
(IC30, IC03)or 12V Power
circuit or Thermal fuse in
fan motor failure.
Replace the fan motor.
Repair the bearing of
the drain fan.
YES
NO
YES
NO
YES
NO
YES
NO
YES
NO
Turn the power supply.
*
Be sure to disconnect the motor connector CN10 after shut off the power supply, or it will be a cause of
damage of the motor.
41
9-4. How to Check the Remote Control (Including the Indoor P.C. Board)
NO
YES
After battery replacement,
shortcircuit the metal terminal at
the side of the battery compartment
(all-clear terminal) with a pencil.
Push the START/STOP button.
Does the transmission
indicator blink?
There is no beep from
the indoor unit.
The operation lamp of
the air conditioner main
unit does not light.
Is there direct
sunlight on the
receptor of the
air conditioner?
Avoid direct
sunlight.
Is there any
thyristor
fluorescent light
near by?
Keep the air
conditioner away
from thyristor
fluorescent light.
Is operation
possible when the
transmitter is moved
nearer to the infrared
signal receiver of the
air conditioner?
Battery life
Can any signal tone
be heard in a transistor
radio when transmitting
within 5cm distance
from the radio?
Does the
transmission
indicator light?
Is there any
beep and
operation?
Short-circuit the metal
terminal at the side of the
battery compartment
(all-clear terminal) with a pencil.
(wait about 10 seconds)
P.C. board is failure.
Replace
P.C. board.
Replace the
batteries
Normal
Remote control
is failure.
Replace remote
control.
Note:
NO
YES
NO
YES
NO
YES
NO
YES
NO
YES
NO
YES
NO
YES
Is operation
possible when setting
the temporary switch of the
air conditioner main unit to
TEST RUN or
TEMPORARY AUTO?
Push the START/
STOP button
– 42 –
9-4-1. How to Check the P.C. Board
(1) Operating precautions
1) When removing the front panel or the P.C.
board, be sure to shut off the power supply.
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 con-
nectors 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 discolora-
tion 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:
Power relay, indoor fan motor drive circuit
and control circuit, C.P.U. and peripheral
circuits, buzzer drive circuit and buzzer.
b. Infrared rays receive and indication
parts:
Infrared rays receive unit and LED.
– 43 –
(3) Checking procedure
Table 9-4-1
No. Procedure Check Point (Symptom) Causes
1
Shut off the power supply and
remove the P.C. board assembly from
the electronic parts base.
Remove the connecting cable from
the terminal block.
1. Is the fuse blown? 1. Application of shock voltage.
Overload by short-circuit of the parts.
2 Remove the connector for the motor,
and turn the power on.
If the OPERATION lamp blinks (0.5
sec. : ON, 0.5 sec. :OFF) when the
power turning on, the checking points
described as 1-5 of right column are
not necessary to perform.
Voltage check
1. Between
TP1
and
TP2
(AC 220240V) (AC 220V)
**
2. Between + and of C02
(DC 310 ~ 340V)
3. Between
12V
and
GND
4. Between
5 V
and
GND
1. AC power cord is defective.
Poor contact of the terminal plate.
Miss wiring of the power relay.
2. Capacitor (C01, C15) is defective.
Line filter (L01) is defective.
Resistor (R01) is defective.
Diode (DB01) is defective.
3. Q01, IC02, T01, F03 are defective.
4. Q01, IC02, T01, F02, Q29, IC03 are defective.
3
Make the operation status by pushing
once the START/STOP button,
except the status of [FAN ONLY],
[ON TIMER].
Voltage check
1. Voltage of relay coil. (DC 12V)
Between pin 10 of IC31 and
GNDI
Between pin 11 of IC31 and
GNDI
2. Between No. 1 and 2 of connecting
cable terminal block.
(AC 220240V) (AC 220V)
**
1. Breaking wire of the relay coil, defective relay
driver. (IC31)
2. Poor contact of relay.
4 Start the operation with the system
which the time of the restart delay
timer is shortened.
1. All indicators light for 3 sec..
2. Indicators do not indicate normally
after approximate 3 sec..
ü
ý
þ
Defective indicator, or poor housing
assembly. (CN13)
5
Make the operation status by
pressing once the START/STOP
button.
1. The time of the restart delay timer
is shortened.
2. Cool operation
3. Air volume [AUTO]
4. Make the setting temperature
lower enough than room
temperature.
5. Continuous operation.
1. Compressor does not operate.
2. OPERATION lamp blinks.
1. The temperature of the indoor heat exchanger
is abnomally lower.
2. Poor contact of the heat exchanger sensor.
(The connector is disconnected.) (CN01)
3. Heat exchanger sensor, main P.C. board are
defective. (Refer to Table 9-4-2 for the
judgment of defective resistance values.)
4. Main P.C. board is defective.
6 The status of No. 5 is continued, and
make the following condition.
1. Heat operation
2. Make the setting temperature
higher enough than room
temperature.
1. Compressor does not operate.
2. OPERATION lamp blinks.
1. The temperature of the heat exchanger is
abnormally high.
2. The heat exchanger sensor connector has
short-circuit. (CN01)
3. The heat exchanger sensor is defective.
(Refer to Table 9-4-2 for the judgment of
defective resistance values.)
4. P.C. board is defective.
7
Turn the power on after connecting
the motor connector.
Start the operation with the following
condition.
1. Operation [Cooling]
2. Airflow [High fan]
3. Continuous operation
1. Motor does not rotate.
(The key operation is accepted.)
2. The motor rotates, but it vibrates too
much.
1. Poor contact of the motor connector.
2. P.C. board is defective.
**
for odel
RAS-07YKX-T
,
RAS-10YKX-T
44
9-4-2. P.C. Board Layout
Bottom View
Top View
45
Table 9-4-2 Approximate value of the sensor (thermistor) resistance (TA, TC)
(= k)
Temperature
0°C10°C20°C25°C30°C
Sensor
Themo. Sensor 35,8 20,7 12,6 10,0 7,92
9-4-3. How to Reduce the Operation Time of
the Anti-Restart Timer
(1) Set the operation mode, temperature, and air
flow rate to be applied with the timer short mode.
(2) Push the [CNL] button while keeping [CHK]
button pushed. In this case, the check mode is
released, and the timer short mode is waited.
(The status is kept even if [CHK] and [CNL]
buttons are released.)
(3) Pushing [START/STOP] buttons sends operation
code + timer short code.
(4) The timer short mode is released by only a
transmission. Therefore, repeat steps from (2) to
perform the timer short mode again.
Fig. 9-4-1
TEMP.
START/STOP
TIMER
WC-E1BE
ECONO.
ON OFF RSV CNL
ACL CHK
FAN
SET
MODE
AUTO
[CHK] button
[CNL] button
46
10. PART REPLACEMENT
10-1. Indoor Unit
No. Part name Procedure Remarks
Q
Front panel 1) After stopping the operation of the air conditioner, be
sure to turn off the circuit breaker or disconnect the
power plug from the AC wall socket.
2) Open the screw caps and remove the two screws fixing
the front panel.
3) Close the screw caps as they were.
4) Open the horizontal louver right below by your finger.
5) Open the lower side of front panel until it touches the
horizontal louver, and remove it from the indoor unit by
turning it.
<To assemble the front panel>
1) Fix the two screws to secure the front panel.
2) Close the screw caps as they were.
3) Press four places where are the center, right end, left
end and lower portions of the air outlet.
4) Check the gap between the front panel and the main
unit.
If cooling or drying operation is performed without
pressing the center of the air outlet, the surface of the
front panel may be covered with frost and have a
waterdrop.
R
Electrical part
assembly
1) Perform the process
Q
above.
2) Remove the electrical part cover by pressing the nail
located on upper portion of the electrical part cover.
3) Remove the drain guide.
4) Remove the screw securing to the end plate of the heat
exchanger.
5) Remove the connector (3p+3p) for the fan motor and the
connector (6p) for the louver motor from the
microcomputer assembly.
6) After unhooking the electrical part base by pressing the
fixin
g
nail located on its lower portion, draw the electrical
part base out toward
y
ou to remove it from the main unit.
7) Pull the TC sensor out from the holder of the heat
exchanger.
(Keep it with the holder of TC sensor.)
8) Dress the connecting cable securely as shown in the
right illustration.
(Improper dressing will cause water leakage.)
S
Drain-pan
assembly
1) Perform the process
R
above.
2) Remove the drain-pan by pressing the four hooks
downwards.
(Keep it with the drain hose.)
5 5
2
3
4
2
3
3
3
3
3
When assembling dress the connecting
cable in loop and put it into the drain-pan.
TC sensor
Screw
Screw
Upper nail
Screw
Drain guide
Electrical
part cover
Lower fixing nail
Hooks
47
Horizontal grille
Screw
Louver
motor
Hooks
Pipe holder
Hooks fixing the
heat exchanger
Shaft bearing
base
Screw fixing the
heat exchanger
Hook
Screw
Cross
Cross
flow fan
flow fan
Rear plate
6~7mm
Cross
flow fan
Shaft
bearing
base
Mount the fan motor
as shown in figure
in the left when
assembling.
Put the end of lead
wire at the portion
between two ribs.
Ribs
Ribs
Ribs
No. Part name Procedure Remarks
T
Horizontal
g
rille
Note:
The horizontal
grille can not be
removed without
removing the
louver motor.
1) Perform the process
R
.
2) Remove the screw fixing the louver motor, and
remove the louver motor.
3) Remove the shaft of the horizontal grille from the
drain-pan.
U
Heat exchan
g
er 1) Perform the process
S
.
2) Remove the pipe holder from the rear side of main
unit by removing the screw.
3) Unhook the hooks fixing the left side of the heat
exchanger and remove the screw fixing it, then
remove the right side of the end plate from the rib
fixing the main unit by sliding the heat exchanger
slightly to the right side.
V
Cross flow fan 1) Perform the process
S
.
2) Loosen the set screw of the cross flow fan.
3) Remove the screw fixing the shaft bearing base.
4) Lift slightly up the left side of the heat exchanger, and
pull the shaft bearing base out left downwards.
When assembling it, fix it with the set screw on the
position where the gap between the rear plate surface
and the left end surface of the cross flow fan is 6 ~ 7mm.
W
Shaft bearing 1) Perform the process
V
above.
2) Remove the shaft bearing from the shaft bearing
base.
<Caution for assembling>
If a part of the shaft bearing is protruded from the
housing, assemble it after pushing its portion into the
correct position in the housing.
X
Fan motor 1) Perform the process
U
above.
2) Perform the process
V
-2) above.
3) Remove the left and right motor bands.
4) Remove the fan motor after pulling the cross flow fan
out sliding it left and right.
49
No. Part name Procedure Remarks
Q
Common
procedure
1) Stop the operation of air-conditioner, and disconnect
the power cord from the AC supply.
2) Remove Electric parts cover.
(2- ST1T Ø4 x 10
l
)
(1-ST1T Ø4 x 10
l
: 07YA-ES & 10YA-ES only)
3) Remove the cord clamp (2- ST2T Ø4 x 12
l
) and
remove the connecting cable.
4) Remove the front cabinet.
(7- ST1T Ø4 x 10
l
with nylon washer)
Pull the front lower portion toward
y
ou, and remove
it pulling out upward.
R
Capacitor for
compressor
1) Remove the fixing screw of the capacitor band.
(1- ST2T Ø4 x 8
l
)
2) Remove the cable connected to the terminal.
S
Capacitor for
fan motor
1) Remove the fixing screw of the capacitor band.
(1- ST2T Ø4 x 8
l
)
2) Remove the cable connected to the terminal.
Refer to [Specifications of Electric Parts]
in pages 10 and 11.
T
Overload
relay
(Except for
07YA-ES &
1) Perform the process
Q
above.
2) Remove terminal cover of compressor.
3) Remove overload relay holder and pull overload relay
10YA-ES) up.
4) Remove Fustons of leads.
Compressor
10-3. Outdoor Unit
Remove 7-ST1T
Ø4 x 10
2-ST1T Ø4 x10
2-ST2T Ø4 x 12 2-ST2T Ø4 x 12
50
11. EXPLODED VIEWS AND PARTS LIST
11-1. Indoor Unit (1)
RAS-07YK-E, RAS-07YK-ES, RAS-10YK-E, RAS-10YK-ES
Location
Part
Description
No. No.
402 43T60002 Base, Terminal
3P, AC 300V, 20A
403 43T69004 Sensor, Heat Exchanger
10k, 25°C
404 43T69005 Sensor, Thermostat
10k, 25°C
405 43T60061 Fuse Set, Thermal 77°C
Location
Part
Description
No. No.
406 43T69055 P.C. Board Assembly,
MCC-798 (07YK-E, 07YK-ES)
406 43T69054 P.C. Board Assembly,
MCC-798 (10YK-E, 10YK-ES)
412 43T69031 P.C. Board Assembly,
WRS-LED, MCC-766
413 43T61001 Base, E-Parts
ABS, Black, UL94-5V
402
403
405
413
412
404
406
402
51
RAS-07YKX, RAS-07YKX-T, RAS-10YKX, RAS-10YKX-T, RAS-11YKX, RAS-10YK-HX
402
403
405
406
413
404
408
412
Location
Part
Description
No. No.
406 43T69054 P.C. Board Assembly,
MCC-798 (10YKX, 10YKX-T,
10YK-HX, 11YKX)
408 43T60042 Cord, Power (without plug)
408 43T60303 Cord, Power (with plug)
(10YK-HX only)
412 43T69031 P.C. Board Assembly,
WRS-LED, MCC-766
413 43T61001 Base, E-Parts
ABS, Black, UL94-5V
Location
Part
Description
No. No.
402 43T60002 Base, Terminal
3P, AC 300V, 20A
403 43T69004 Sensor, Heat Exchanger
10k, 25°C
404 43T69005 Sensor, Thermostat
10k, 25°C
405 43T60301 Fuse Set, Thermal 77°C
406 43T69055 P.C. Board Assembly,
MCC-798 (07YKX, 07YKX-T)
52
11-1. Indoor Unit (2)
RAS-07YK-E, RAS-10YK-E, RAS-10YK-ES
Location
Part
Description
No. No.
201 43T00301 Panel Assembly, Front (07YK-E)
201 43T00302 Panel Assembly, Front (10YK-E)
201 43T00304 Panel Assembly, Front (10YK-ES)
202 43T00044 Grille, Suction
203 43T80001 Air Filter (L)
204 43T80002 Air Filter (R)
206 43T07021 Cap, Screw (L)
207 43T07020 Cap, Screw (R)
208 43T08301 Panel, Control (07YK-E)
208 43T08302 Panel, Control (10YK-E)
208 43T08304 Panel, Control (10YK-ES)
209 43T19004 Filter, Accepted Signal
210 43T09035 Louver Assy, Horizontal for
Service
211 43T09304 Louver Assy (07YK-E)
211 43T09303 Louver Assy (10YK-E, 10YK-ES)
212 43T70301 Hose Assy, Drain
213 43T21302 Motor, Stepping
214 43T07001 Bushing
215 43T44301 Refrigeration Cycle Assy
(07YK-E)
215 43T44003 Refrigeration Cycle Assy
(10YK-E)
215 43T44302 Refrigeration Cycle Assy
(10YK-ES)
216 43T47006 Pipe, Delivery
217 43T47305 Pipe, Suction (07YK-E)
Location
Part
Description
No. No.
217 43T47005 Pipe, Suction (10YK-E, 10YK-ES)
218 43T49007 Pipe, Shield
219 43T19003 Holder, Sensor
220 43T49003 Spring (10YK-E, 10YK-ES)
221 43T49028 Plate, EVA-SEAL
222 43T49023 Holder, Plate EVA-SEAL
223 43T49004 Rubber, Sound Insulation
224 43T79002 Guide, Drain
225 43T39002 Band, Motor (L)
226 43T39001 Band, Motor (R)
227 43T21301 Motor, Fan
228 43T20007 Fan, Cross Flow
229 43T22002 Bearing
230 43T39003 Base, Bearing
231 43T03001 Plate, Rear
232 43T07002 Holder, Pipe
233 43T82001 Plate, Installation
234 43T85301 Owners Manual
235 43T69032 Remote Control, Wireless
236 43T63002 Holder, Remote Control
237 43T62008 Cover, E-Parts
238 43T62002 Cover, Up, Terminal
239 43T62003 Clamp, Cord
240 43T39010 Guide, Drain, Up
241 43T62005 Cover, Down, Terminal
242 43T60305 Connector, fan motor
201
210
214
211
217
216
215
221
222
229
228
230
231
233
232
226
227
242
223
225
224
220
218
219
213
212
209
208
234
237
238
202
206
207
203
204
240
236
235
239
241
53
RAS-07YK-ES
Location
Part
Description
No. No.
201 43T00324 Panel Assembly, Front (07YK-ES)
202 43T00044 Grille, Suction
203 43T80001 Air Filter (L)
204 43T80002 Air Filter (R)
206 43T07021 Cap, Screw (L)
207 43T07020 Cap, Screw (R)
208 43T08331 Panel, Control (07YK-ES)
209 43 T19004 Filter, Accepted Signal
210 43T09035 Louver Ass’y, Horizontal for
Service
211 43T09307 Louver Ass’y (07YK-ES)
212 43T70301 Hose Ass’y, Drain
213 43T21302 Motor, Stepping
214 43T07001 Bushing
215 43T44307 Refrigeration Cycle Ass’y
(07YK-ES)
216 43T47006 Pipe, Delivery
217 43T47305 Pipe, Suction (07YK-ES)
218 43T49007 Pipe, Shield
219 43T19003 Holder, Sensor
221 43T49028 Plate, EVA-SEAL
222 43T49023 Holder, Plate EVA-SEAL
223 43T49004 Rubber, Sound Insulation
224 43T79002 Guide, Drain
225 43T39002 Band, Motor (L)
226 43T39001 Band, Motor (R)
227 43T21301 Motor, Fan
Location
Part
Description
No. No.
228 43T20007 Fan, Cross Flow
229 43T22002 Bearing
230 43T39003 Base, Bearing
231 43T03001 Plate, Rear
232 43T07002 Holder, Pipe
233 43T82001 Plate, Installation
234 43T85301 Owner’s Manual
235 43T69032 Remote Control, Wireless
236 43T63002 Holder, Remote Control
237 43T62008 Cover, E-Parts
238 43T62002 Cover, Up, Terminal
239 43T62003 Clamp, Cord
240 43T39010 Guide, Drain, Up
241 43T62005 Cover, Down, Terminal
242 43T60305 Connector, fan motor
201
210
214
211
217
216
215
221
222
229
228
230
231
233
232
226
227
242
223
225
224
220
218
219
213
212
209
208
234
237
238
202
206
207
203
204
240
236
235
239
241
54
RAS-07YKX, RAS-07YKX-T, RAS-10YKX, RAS-10YKX-T, RAS-11YKX, RAS-10YK-HX
Location
Part
Description
No. No.
201 43T00310 Panel Assembly, Front (07YKX)
201 43T00311 Panel Assembly, Front (07YKX-T)
201 43T00312 Panel Assembly, Front (10YKX)
201 43T00313 Panel Assembly, Front (10YKX-T)
201 43T00314 Panel Assembly, Front (11YKX)
201 43T00315 Panel Assembly, Front (10YK-HX)
202 43T00044 Grille, Suction
203 43T80001 Air Filter (L)
204 43T80002 Air Filter (R)
206 43T07021 Cap, Screw (L)
207 43T07020 Cap, Screw (R)
208 43T08310 Panel, Control (07YKX)
208 43T08311 Panel, Control (07YKX-T)
208 43T08312 Panel, Control (10YKX)
208 43T08313 Panel, Control (10YKX-T)
208 43T08314 Panel, Control (11YKX)
208 43T08315 Panel, Control (10YK-HX)
209 43T19004 Filter, Accepted Signal
210 43T09035 Louver Assy, Horizontal for
Service
211 43T09301 Louver Assy (07YKX, 07YKX-T)
211 43T09302 Louver Assy
(10YKX, 11YKX, 10YKX-T)
211 43T09303 Louver Assy (10KX-HX)
212 43T70301 Hose Assy, Drain
213 43T21302 Motor, Stepping
214 43T07001 Bushing
215 43T44301 Refrigeration Cycle Assy
(07YKX, 07YKX-T)
215 43T44003 Refrigeration Cycle Assy
(10YKX, 10YK-HX, 11YKX)
215 43T44023 Refrigeration Cycle Assy
(10YKX-T)
216 43T47006 Pipe, Delivery
217 43T47305 Pipe, Suction (07YKX, 07YKX-T)
Location
Part
Description
No. No.
217 43T47005 Pipe, Suction
(10YKX, 10YK-HX, 11YKX)
217 43T47304 Pipe, Suction (10YKX-T)
218 43T49007 Pipe, Shield
218 43T49010 Pipe, Shield (10YKX-T only)
219 43T19003 Holder, Sensor
220 43T49003 Spring (10YKX, 11YKX, 10YK-HX)
220 43T49009 Spring (10YKX-T)
221 43T49028 Plate, EVA-SEAL
222 43T49023 Holder, Plate EVA-SEAL
223 43T49004 Rubber, Sound Insulation
224 43T79002 Guide, Drain
225 43T39002 Band, Motor (L)
226 43T39001 Band, Motor (R)
227 43T21301 Motor, Fan
228 43T20007 Fan, Cross Flow
229 43T22002 Bearing
230 43T39003 Base, Bearing
231 43T03001 Plate, Rear
232 43T07002 Holder, Pipe
233 43T82001 Plate, Installation
234 43T85303 Owners Manual
(07YKX, 10YKX, 11YKX)
234 43T85304 Owners Manual
(07YKX-T, 10YKX-T)
234 43T85305 Owners Manual
(10YK-HX)
235 43T69032 Remote Control, Wireless
236 43T63002 Holder, Remote Control
237 43T62008 Cover, E-Parts
238 43T62002 Cover, Up, Terminal
239 43T62003 Clamp, Cord
240 43T39010 Guide, Drain, Up
242 43T60305 Connector, fan motor
201
210
214
211
217
216
215
221
222
229
228
230
231
233
232
226
227
242
223
225
224
220
218
219
213
212
209
208
234
237
238
202
206
207
203
204
240
236
235
239
55
11-2. Outdoor Unit
RAS-07YA-E, RAS-10YA-E, RAS-10YA-HX
Location
Part
Description
No. No.
1 43T19001 Guard, Fan
2 43T20001 Fan, Propeller
3 43005037 Cabinet, Front
4 43T43005 Condenser (07YA-E)
4 43T43003 Condenser (10YA-E, 10YA-HX)
5 43T62007 Cover, E-Parts
6 43T00032 Cabinet, Back
7 43T47008 Tube, Capillary
8 43T46017 Valve, Packed 9,52
9 43T47021 Bonnet
10 43T46016 Valve, Packed 6,35
11 43T47020 Bonnet
12 43021001 Motor, Fan, UE6-21SJ5P
13 43T47001 Nut, Flange
14 43T19005 Handle
15 43T49001 Rubber, Cushion
Location
Part
Description
No. No.
16 43T19002 Stopper, Guard
17 43T63001 Holder, OL-Relay (07YA-E)
18 43T54302 Relay, Over Load (07YA-E)
18 43T54303 Relay, Over Load
(10YA-E, 10YA-HX)
19 43T41304 Compressor, PH80T1-4C
(07YA-E)
19 43T41405 Compressor, 2PS146D5AB02
(10YA-E, 10YA-HX)
20 43055470 Capacitor, 15µF 400V
(07YA-E only)
20 43055483 Capacitor, 25µF 400V
21 43T55001 Capacitor, 1,5µF 500V
22 43T60006 Base,Terminal , 3P
23 43T97001 Nut, Flat Washer (07YA-E)
24 43045073 Dryer
7 : CAPILLARY TUBE
23 : NUT, FLAT WASHER (07YA-E)
24 : DRYER (10YA-E, 10YA-HX)
15, 23
18
17
19
20
21
22
1
16
3
13
2
12
4
14
6
8, 9
10, 11
5
57
RAS-10YA-ES
Location
Part
Description
No. No.
1 43T19001 Guard, Fan
2 43T20001 Fan, Propeller
3 43005037 Cabinet, Front
4 43T43302 Condenser
5 43062193 Cover, E-Parts
6 43005038 Cabinet, Back
7 43T47007 Tube, Capillary
8 43T46011 Valve, Packed 9,52
9 43T47021 Bonnet
10 43T46010 Valve, Packed 6,35
11 43T47020 Bonnet
Location
Part
Description
No. No.
12 43021001 Motor, Fan, UE6-21SJ5P
13 43T47001 Nut, Flange
14 43T19005 Handle
15 43T49001 Rubber, Cushion
16 43T19002 Stopper, Guard
17 43T41302 Compressor, PA98X1T-4FZ
18 43055483 Capacitor, 25µF 400V
19 43T55001 Capacitor, 1,5µF 500V
20 43T60006 Base,Terminal , 3P
21 43T45004 Dryer
22 43T97001 Nut, Flat Washer
7 : CAPILLARY TUBE
21 : DRYER
15, 22
17
18
19
20
1
16
3
13
2
12
4
14
6
8, 9
10, 11
5
58
RAS-07YAX, RAS-07YAX-T, RAS-10YAX, RAS-10YAX-T, RAS-11YAX
7 : CAPILLARY TUBE
24 : DRYER (10YAX, 10YAX-E, 11YAX)
15, 23
20 21 22
18
17
19
1
16
3
13
2
12
4
14
6
8, 9
10, 11
5
Location
Part
Description
No. No.
1 43T19001 Guard, Fan
2 43T20001 Fan, Propeller
3 43005037 Cabinet, Front
4 43T43005 Condenser (07YAX, 07YAX-T)
4 43T43003 Condenser (10YAX, 11YAX)
4 43T43022 Condenser (10YAX-T)
5 43T62007 Cover, E-Parts
6 43T00032 Cabinet, Back
7 43T47008 Tube, Capillary
8 43T46017 Valve, Packed 9,52
9 43T47021 Bonnet
10 43T46016 Valve, Packed 6,35
11 43T47020 Bonnet
12 43021928 Motor, Fan, UE6-21AJ5P
(07YAX, 07YAX-T, 10YAX, 11YAX)
12 43021981 Motor, Fan, UE6-31C5P
(10YAX-T)
13 43T47001 Nut, Flange
14 43T19005 Handle
15 43T49001 Rubber, Cushion
Location
Part
Description
No. No.
16 43T19002 Stopper, Guard
17 43T63001 Holder, OL-Relay
(07YAX, 07YAX-T, 10YAX)
18 43T54302 Relay, Over Load
(07YAX, 07YAX-T)
18 43T54303 Relay, Over Load
(10YAX, 10YAX-T, 11YAX)
19 43T41304 Compressor, PH80T1-4C
(07YAX, 07YAX-T)
19 43T41402 Compressor, PH102T1-4C
(10YAX)
19 43T41409 Compressor, RM5510GNE92
(10YAX-T)
19 43T41405 Compressor, 2PS146D5AB02
(11YAX)
20 43055470 Capacitor, 15µF 400V
(07YAX, 07YAX-T)
20 43T55013 Capacitor, 25µF 440V
21 43T55022 Capacitor, 1,5µF 500V
22 43T60006 Base,Terminal , 3P
23 43T97001 Nut, Flat Washer (07YAX, 07YAX-T)
24 43045073 Dryer
TOSHIBA CARRIER (THAILAND) CO., LTD.
144/9 MOO 5, BANGKADI INDUSTRIAL PARK, TIVANON ROAD,
TAMBOL BANGKADI, AMPHUR MUANG, PATHUMTHANI 12000, THAILAND.
–7 (E052063701)
55

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