Toshiba RAS-10YK-HX, RAS-07YAX-T, RAS-07YKX, RAS-07YK-E, RAS-7YA-X SERVICE MANUAL

SERVICE MANUAL

AIR-CONDITIONER

SPLIT WALL TYPE

RAS-07YKX / RAS-07YAX
RAS-10YKX / RAS-10YAX

FILE NO. DAS-SM-00-001

SUPPLEMENT

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

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

– 2 –

1. SPECIFICATIONS

RAS-07YKX/07YAX, RAS-07YK-E/07YA-E, RAS-07YKX-T/07YAX-T

MODEL

ITEM

Capacity kW *1

Phase Single
V220–240 220Power source

Hz 50
Power consumption kW 0,60–0,65 0,60
Power factor % 96–94 96

Running current

Starting current A 12
Moisture removal lit/h 0,8

Noise
(SPL at 1 meter)

Refrigerant

Refrigerant control Capillary tube

Interconnection pipe

Condensate drain pipe Outer diameter mm 16

INDOOR UNIT RAS-07YK-E RAS-07YKX RAS-07YKX-T

Net weight kg 8
Evaporator type Finned tube
Indoor fan type Cross flow fan

Fan motor output W 20
Air filter Polypropylene net filter (Washable)

OUTDOOR UNIT RAS-07YA-E RAS-07YAX RAS-07YAX-T

Net weight kg 26

Condenser type

Indoor/Outdoor A 0,15/2,70–0,15/2,72 0,15/2,70

Indoor (H/M/L) dB (A) 39 / 33 / 29
Outdoor (220–240V) dB (A) 44–45 44
Name of refrigerant R-22
Rated volume kg 0,59

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
Maximum height difference
Indoor unit
Outdoor unit

Height mm 265
Width mm 790Dimensions
Depth mm 189

High fan m³/h 550
Medium fan m³/h 490Air flow rate
Low fan m³/h 430

Height mm 530
Width mm 770Dimensions
Depth mm 200

↑
↓

V220V–240V 220V

m

RAS-07YK-E/YA-E RAS-07YKX/YAX RAS-07YKX-T/YAX-T

Cooling

220V–240V 220V

2,10–2,20 2,10

5

Finned tube

Outdoor fan type Propeller
Air flow rate (220–240V) m³/h 1500–1700 1500
Fan motor output W 18 (UE6-21SJ5P) 18 (UE6-21A5P), 20 (HF-240-20A)

Compressor

Safety device Fuse, Overload relay
Auto louver Ye s
Usable outdoor temperature range °C21–43

Model PH80T1-4C
Output W 605

Specifications are subject to change without notice.

– 3 –

RAS-10YKX/10YAX, RAS-11YKX/11YAX
RAS-10YK-E/10YA-E, RAS-10YK-HX/10YA-HX

MODEL

ITEM

Capacity kW *1

Phase Single

V220–240Power source

Hz 50
Power consumption kW 0,80–0,85
Power factor % 96–94

Running current

Starting current A 16
Moisture removal lit/h 1,2
Noise

(SPL at 1 meter)

Refrigerant

Refrigerant control Capillary tube

Interconnection pipe

Condensate drain pipe Outer diameter mm 16

INDOOR UNIT RAS-10YKX

Net weight kg 8
Evaporator type Finned tube
Indoor fan type Cross flow fan

Fan motor output W 20
Air filter Polypropylene net filter (Washable)

OUTDOOR UNIT RAS-10YAX

Net weight kg 29
Condenser type Finned tube
Outdoor fan type Propeller
Air flow rate (220–240V) m³/h 1500–1700
Fan motor output W 18 (UE6-21SJ5P) 18 (UE6-21A5P), or 20 (HF-240-20A)

Compressor

Safety device Fuse, Overload relay
Air flow rate Ye s
Usable outdoor temperature range °C21–43

Indoor/Outdoor A 0,15/3,65–0,15/3,60

Indoor (H/M/L) dB (A) 44 / 36 / 29
Outdoor (220–240V) dB (A) 44–45
Name of refrigerant R-22
Rated volume kg 0,70

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
Maximum height difference
Indoor unit
Outdoor unit

Height mm 265
Width mm 790Dimensions
Depth mm 189

High fan m³/h 650
Medium fan m³/h 510Air flow rate
Low fan m³/h 430

Height mm 530
Width mm 770Dimensions
Depth mm 200

Model PH102T1-4C 2PS146D5AB02
Output W 750

↑
↓

V220V–240V

m

RAS-10YKX/10YAX

RAS-10YK-E/10YA-E

RAS-10YK-HX/10YA-HX

Cooling

220V–240V

2,70–2,70

5

RAS-10YK-E

RAS-10YK-HX

RAS-10YA-E

RAS-10YA-HX

RAS-11YKX/11YAX

RAS-11YKX

RAS-11YAX

Specifications are subject to change without notice.

– 4 –

RAS-10YK-ES / RAS-10YA-ES
RAS-10YKX-T / RAS-10YAX-T

MODEL

ITEM

Capacity kW *1

Phase Single

Power source

Power consumption kW 0,80–0,85 0,80
Power fac t or % 96–94 96

Running current

Starting current A 16 11
Moisture removal lit/h 1,2

Noise
(SPL at 1 meter)

Refrigerant

Refrigerant control Capillary tube

Interconnection pipe

Condensate drain pipe Outer diameter mm 16

INDOOR UNIT RAS-10YK-ES RAS-10YKX-T

Net weight kg 8
Evaporator type Finned tube
Indoor fan type Cross flow fan

Fan motor output W 20
Air filter Polypropylene net filter (Washable)

OUTDOOR UNIT RAS-10YA-ES RAS-10YAX-T

Dimensions

Net weight kg 29 31
Condenser type Finned tube
Outdoor fan type Propeller
Air flow rate m³/h (220–240V) 1500 (220V)1700
Fan mot or output W 18 (UE6-21SJ5P) 27 (UE6-31C5P) or 30 (HF-240-30A)

Compressor

Safety device Fuse, Overload relay
Auto louver Ye s
Usable outdoor temperature range °C21–43

Indoor/Outdoor A 0,15/3,65

Indoor (H/M/L) dB (A) 44 / 36 / 29
Outdoor dB (A) (220–240V) 44 (220V) 46
Name of refrigerant R-410A R-22
Rated volume kg 0,69 0,75

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
Maximum height difference
Indoor unit
Outdoor unit

Height mm 265
Width mm 790Dimensions
Depth mm 189

High fan m³/h 650
Medium fan m³/h 510Air flow rate
Low fan m³/h 430

Height mm 530
Width mm 770
Depth mm 200

Model PA98X1T-4FZ RM5510GNE92
Output W 750

↑
↓

V220–240 220
Hz 50

V220V–240V 220V

m

RAS-10YK-ES/10YA-ES RAS-10YKX-T/10YAX-T

Cooling

220V–240V 220V

2,65–2,70 2,70

5

Specifications are subject to change without notice.

– 5 –

Note : *1

• Capacity is based on the following temperature conditions.

TEMPERATURE

Indoor unit inlet air temperature

Outdoor unit inlet air temperature

CONDITION COOLING

(DB) 27 °C

(WB) 19 °C

(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.

– 7 –

2-1.Indoor Unit

2.CONSTRUCTION VIEWS

Air inlet

265

Air outlet

Air filter

790

790

232 326 232

Hanger

Heat exchanger

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

Front panel

Back body

189

47

Knock out system

50

10

Drain hose (0,54m)

Hanger

Connecting pipe (0,39m)

(Flare Ø9,52)

Hanger

46

2,5

Minimum
distance

17 20

265

to wall

120 or more 120 or more

178,5

3,5

40,5

Center line

321

65965,5
450

326

66 or more

Minimum
distance
to ceiling

HangerHanger

Installation
plate outline

790

Connecting pipe (0,49m)

(Flare Ø6,35)

65,5

12626931976

Hanger

For stud bolt
(Ø8~Ø10)

For stud bolt
(Ø6)

Minimum
distance

20 2037

to wall

40,5

60,5

50

10

47

Knock out system

- 8 -

2-2. Outdoor Unit

Detail Drawing

A

600

36
50

216

230

25

Ø11x14 Hole

Handle

R10

Ø6 Hole

11

A

230

216

Fan guard

30

36

50

600 85

111

Ø25 Drain hole

8-Ø6 Holes
(For fixing the outdoor unit)

4-Ø11x14 Long holes
(For anchor bolt Ø8-Ø10)

111

Gas side (flare Ø9,52)

Liquid side (flare Ø6,35)

200

12

11

525

5

530

ø420

268

89

59

TOSHIBA

770 59

770

268

89

Electric
parts cover

Z

54 62

Access for
charging

250

230

100 or more

Inlet port

View

Z

600

Inlet port

45 or more

Visible outline
of the product

Outlet
port

Center

400 or more

Mounting dimension of anchor bolt

port

600 or more

(Minimum distance
of the wall)

4-Ø11x14 Long holes

(For anchor bolt Ø8-Ø10)

- 9 -

3. WIRING DIAGRAM

LOUVER MOTOR

Datail A

RAS-10YK-HX

L
N

Power cord with plug

RAS-07YK-E
RAS-10YK-E

RAS-07YK-ES
RAS-10YK-ES

A

RAS-10YAX-T

RAS-10YA-ES

POWER

TERMINAL

BLOCK

RAS-07YKX
RAS-10YKX

RAS-11YKX
RAS-07YKX-T
RAS-10YKX-T

FAN MOTOR

only

COMPRESSOR

only

RAS-07YKX/10YKX/11YKX
RAS-07YKX-T/10YKX-T/10YK-HX

THERMAL
FUSE
77°C x 1

ORN

ORN

P04

BRW

BLU

SG01

DSA

VARISTOR

3

BLK

GRN&YEL

L
N

RY02

4

BLK

WHI

INDOOR

TERMINAL

BLOCK

OUTDOOR
TERMINAL

BLOCK

OVER LOAD

RELAY

BLK

BLK

COMPRESSOR

PNK
WHI

RAS-07YK-E/10YK-E
RAS-07YK-ES/10YK-ES

ORN

2

1

CN04

1

2

R22

F01

6,3A

250V

3

R21

RY01

4

WHI

BLK

1

2

1

2

BLK

RED

FAN

MOTOR

CAPACITOR CAPACITOR

RED

THERMAL
FUSE
77°C x 2

ORN

VARISTOR

C15

1
1

YEL

GRN&YEL

GRN & YEL

CHASSIS

RED

WHI

INFRARED RAYS RECEIVE

AND INDICATION PARTS

6

7

5

6

7

544332211

BLU

PNK

BLU

BLU

BLU

BLU

BLU

ORN

PNK

YEL

RED

CN07

C01

BLU

6
6

5
5

4
4

R01

BRW

3

2

1

3

2

1

6

7

54321

DB01

C02

POWER

L01

CR03 IC 03

DC 12V
DC 5V

SUPPLY
CIRCUIT

C58

23

CN11 CN01

23

BLK

BRW

5 3 1
5 3 1

BLK

1

23456

1

23456

PNK

WHI

1
1

BLK

2
2

BLK

CN03CN10

THERMO
SENSOR

(TA)

EXCHANGER

SENSOR

AC FAN MOTOR

INDOOR

OUTDOOR

COLOR IDENTIFICATION

:

BROWN

BRW

:

RED

RED

:

WHITE

WHI

:

YEL

YELLOW

:

BLU

BLUE

:

BLK

BLACK

GRY

:

GRAY

:

PINK

PNK

:

ORN

GRN&YEL

ORANGE

:

GREEN &
YELLOW

8

9

CN25

8

9

BLK

WHI

8

9

CN13

MCC-798

2

1

2

1

BLK

BLK

HEAT

(TC)

– 10 –

4. SPECIFICATIONS OF ELECTRICAL PARTS

g

4-1. Indoor Unit

No. PARTS NAME TYPE SPECIFICATIONS

Output (Rated) 20W, 6poles, 1phase, 220–240V, 50Hz

Fan motor

2 Thermo. sensor (TA-sensor) (Microprocessor) 10kW 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) 10kW at 25°C

7 Line filter SS11V-06180 18mH, AC 0,6A

8 Diode D3SBA60 4A, 600V

9 Capacitor ECEC2GA470BL 47mF, 400V

10 Fuse TSCR T6, 3A, 250V

11 Varistor 15G561K 560V

12 Resistor 5,6W, 2W

13 Louver motor MP35EA12 Output (Rated) 2W, 10poles, 1phase, DC 12V

(for indoor) MMF-240-20-4A

Winding resistance (W)
(at 20°C)

Red-Black White-Black1

220,8 324,3

4-2. Outdoor Unit

RAS-07YAX, RAS-07YA-E, RAS-07YAX-T

No. PARTS NAME TYPE SPECIFICATIONS

Output (Rated) 605W, 2poles, 1phase, 220–240V, 50Hz

Winding resistance (W)
(at 20°C)

Output (Rated) 18W, 6poles, 1phase, 220–240V, 50/60Hz

RAS-07YA-E

Fan motor

2

(for outdoor)

RAS-07YAX
RAS-07YAX-T

Runnin

3

(for fan motor)

4 Running capacitor (for compressor) SK-40CMP15U1 AC 400V, 15mF

5 Overload relay JMRA99208-9201 U/T 4,2A (25°C), OPEN 130 ± 5°C, CLOSE 69 ± 11°C

capacitor

RAS-07YA-E

RAS-07YAX
RAS-07YAX-T

UE6-21SJ5P

HF-240-20A

SK-50FMP1,5U1 AC 500V, 1,5mF

DS501155BPQA AC 500V, 1,5mF

Winding resistance (W)
(at 20°C)

Output (Rated) 18W, 6poles, 1phase, 220–240V, 50/60Hz

Winding resistance (W)
(at 20°C)

Output (Rated) 20W, 6poles, 1phase, 220–240V, 50/60Hz

Winding resistance (W)
(at 20°C)

C-R C-S1 Compressor PH80T1-4C

4,80 8,37

Red-Black White-Black

370 370

Red-Black White-BlackUE6-21A5P

370 370

Red-Black White-Black

387 466

– 11 –

Indoor Unit Control Panel

C. P. U

Heat Exchanger Sensor

Thermo. Sensor

Infrared Rays Signal Receiver

Infrared

Rays

Remote Control

Operation (START/STOP)

– 14 –

Operation Mode Selection

AUTO, COOL, DRY, FAN ONLY

Thermo. Setting

Fan Speed Selection

ON TIMER Setting

Initializing Circuit

Clock Frequency

Oscillator Circuit

Power Supply

Circuit

Noise Filter

Functions

• Louver Control

• 3-minute Delay at Restart for Compressor

• Motor Revolution Control

• Processing

(Temperature Processing)

• Timer

Compressor, Outdoor Fan

ON/OFF Signal

ON/OFF Signal

Louver DriverRelay Driver

Louver

Operation

Display

Timer

Display

ECONO.

Sign Display

6. CONTROL BLOCK DIAGRAM

FAN-ONLY

Sign Display

Indoor

Fan Motor

Louver

Motor

OFF TIMER Setting

Louver AUTO Swing

Louver Direction Setting

ECONO.

AC 220-240V
AC 220V

(RAS-07YKX-T, 10YKX-T only)

50Hz

50Hz

Relay

RY02

Relay

RY01

Compressor

Outdoor Fan Motor

7. OPERATION DESCRIPTIONS

(Room temp. – Set temp.)

+1

0

Set
temp.

ON

OFF

OPERATION

display

ON ON

Compressor

Outdoor fan

(RY01)

Common relay

(RY02)

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.

28

HIGH

MED

LOW(+)

LOW

LOW

(Room temp. – Set temp.)

Set
temp.

27

26

25

24

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. 7-2-1

(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.

Fig. 7-1-1 Auto setting of air volume

FAN

Table 7-1-1 Manual setting of FAN SPEED

Indication of

FAN SPEED

LOW

MED

HIGH

For model :

*

RAS-07YKX, RAS-07YK-E, RAS-07YK-ES, RAS-07YKX-T

HIGH Air volume

(m3/hr)

430 (*430)

510 (*490)

650 (*550)

(Room temp. – Set temp.)

Set
temp.

+4

+3

+2

+1

AUTO

HIGH

MED

LOW(+)

LOW

0

RY01

OFF

LOW

(continuous)

Manual

According
to the set

position

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

– 15 –

by pushing the START/STOP button.

7-2-1. Louver Control

(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

7-3. DRY Operation

(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 opera­tion, vertical air flow louvers start swinging. When
the [AUTO] button is pushed again, swinging stops.

(MODE of the remote control : DRY)

(1) Compressor, outdoor fan and operation display

are controlled as shown in Fig. 7-3-1.

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

– 16 –

ON ON ON ON

OFF OFF OFF

L. *S.L. S.L.L. L. S.L. L.

*Super Low

Fig. 7-3-2

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 opera­tion 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.

Powerful
Cooling mode

(The same cooling mode as the room temperature control is set at set temp. –1˚C)
The Louver moved downward. (DIRECT AUTO COOL)

+4

Cooling mode

(The same cooling mode as the room temperature control is set at set temp. –1˚C)

+1

Dry mode

(The same dry operation as the room temperature control is set at set temp. –1˚C)

(Room temp. – Set temp.)

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

(˚C)

Set temp.
is changed

Fig. 7-4-1

7-6. Low-Temperature Limit Control

The microprocessor detects the indoor heat ex­changer temperature so as to prevent freezing up the
indoor heat exchanger.

Control is performed as shown in Fig. 7-6-1.

Heat exchanger
temperature

(Cooling Operation)

(˚C)

7

5

Compressor

Less than 5˚C continues

Outdoor fan

ON

for 5 minutes

OFF

Set temp.

+2

+1

ECONO. button
is pushed

Set temp.
is changed

Fig. 7-6-1

1H 2H TIME0H

Fig. 7-5-1

– 17 –

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.

• When the system is stand-by (not running)

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 TEM­PORARY 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:

OPERATION

Push the TEMPORARY button
continuously more than three
seconds.

0

TEMPORARY

• When the system is operating

OPERATION

Push the TEMPORARY button
continuously more than three
seconds.

0

TEMPORARY

MOTION

Stand-by

↓

The system starts to operate. The green light will be lit.

↓ about three seconds after

3S

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.

MOTION

Operating The green light is lit.

↓

The system stops to operate. The green light is turned off.

↓ about three seconds after

3S

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.

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.

– 18 –

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.

0

TEMPORARY

• When the system is operating

OPERATION

Push the TEMPORARY button
continuously more than three
seconds.

0

TEMPORARY

MOTION

Stand-by

↓

The system starts to operate. The orange light will be lit.

↓ about three seconds after

3S

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.

MOTION

Operating The orange light is lit.

↓

The system stops to operate. The orange light is turned off.

↓ about three seconds after

3S

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.

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.

– 19 –

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

` 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.

ENGAGE DEALER OR SPECIALIST FOR INSTALLATION.

– 20 –

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 user’s 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)

– 21 –

8-2. Installation Diagram of Indoor and Outdoor Units

For installation of the indoor unit, use the paper pattern on the back.

For the rear left and left piping

Front cabinet

Front panel

(Attach to the front cabinet)

(Attach to the front cabinet)

5 Deodorizing
filter

7 Purifying
filter

100 mm or more

Before install the wireless
remote control

• With the remote control cover
open, load the batteries
supplied correctly, observing
their polarity.

Wireless remote control

2

Clip anchor

120 mm or more

Air filter

2 Wireless
remote
control

400 mm or more

Hook

Pan head
wood screw

8

66 mm or more

Hook

4 Remote
control
holder

or m

m

45 m

600 mm or more

Hook

1 Installation
plate

120 mm

or more

5 Mounting screw

Shield pipe

ore

Extension
drain hose
(Option:
RB-821SW)

600 mm or more

Wall

Insert the cushion between
the indoor unit and wall,
and lift indoor unit to make
work easier.

Do not allow the drain hose to
get slack.

Cut the piping hole
sloped slightly

Make sure to run the drain
hose sloped downward.

The auxiliary piping can be
connected the left, rear left,
rear, right or bottom.

Right

Rear

Bottom

Rear left

Left

Insulation of refrigerant pipes
insulates the pipes separately,
not together.

3

Batteries

Cover

Be sure to use the
Electric parts cover

Loop the connective cable
(about 100 mm in diameter
and 300~350 mm long).

– 22 –

6 mm thick heat resisting
polyethylene foam

8-3. Installation

<Anchor bolt arrangement of outdoor unit>

8-3-1. Optional Parts

Par t

code

A

B

C

Refrigerant piping

Liquid side : ø6,35 mm
Gas side : ø9,52 mm

Pipe insulating material
(polyethylene foam, 6 mm thickness)

Putty, PVC tapes

Parts name

8-3-2. Installation Parts

Part

No.

Name of parts

Q'ty

Q’ty

Each

one

1

Each

one

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

No.

Name of parts

Q'ty

1

2

3

4

Others

Installation plate x 1

Wireless remote control x 1

Batteries x 2

Remote control holder x 1

5

Mounting screw ø4 x 25 x 6

6

Deodorizing filter x 1

7

Purifying filter x 1

8

Pan head wood screw
ø3,1 x 16 x 2

Name

Installation manual

Owner’s 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.

– 23 –

8-4. Indoor Unit

Indoor unit

Pipe
hole

65,5mm

Thread

Weight

1

Installation
plate

5

Mounting
screw

Pipe hole

65,5mm

Anchor bolt hole

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.

8-4-1. Cutting a Hole and Mounting

Installation Plate

<Cutting a hole>

When installing the refrigerant pipes from the rear.

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 owner’s 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.

The center of the piping slot

The center of the pipe
hole is above the arrow.

is above the arrow.

Pipe hole

80mm

65mm

40,5

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.

mm

(Side view) Indoor unit

7m

75˚

Reception
range

(Top view)

Remote

control

Fig. 8-4-1

Indoor unit

Reception
range

*:Axial distance

5m

45˚

45˚

Remote
control

5m

*7m

Fig. 8-4-3

– 24 –

<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 mount­ing screw, do not use the anchor bolt hole.
Otherwise the unit may fall down and result in
personal injury and property damage.

Installation plate

Anchor bolt

Projection
15mm
or less

5mm dia, hole

Clip anchor

(Keep horizontal direction)

Mounting screw Ø4 x 25

5

CAUTION

Failure to firmly install the unit may result in per­sonal 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 :

Fig. 8-4-4

RAS-10YKX

RAS-07YKX

MODEL

Power source 50Hz *220–240V ~ Single-phase 50Hz *220V ~ Single-phase

Maximum running current 5A 7,5A 5A 7,5A

Plug socket & fuse rating 16A

Wiring 1mm2 or more

No adjustment is necessary.

*

RAS-07YK-E
RAS-07YK-ES

RAS-11YKX
RAS-10YK-E
RAS-10YK-ES
RAS-10YK-HX

• Perform wiring works so as to allow a generous

wiring capacity.

RAS-07YKX-T RAS-10YKX-T

– 25 –

8-4-3. Wiring Connection

WARNING

To plug the cable in the plug receptacle, take the
following precaution.

THIS APPLIANCE MUST BE EARTHED.

Taking out the power cord

Slitted portion

IMPORTANT

THE WIRES IN THIS MAINS LEAD ARE COLORED
IN ACCORDANCE WITH THE FOLLOWING CODE:

L

: Brown

N

: Blue
: Green and Yow

-LIVE

-NEUTRAL

-EARTH

L
N

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>

4

4

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

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.

Terminal block

only)

Power supply
cord

L

N

Cord clamp

Terminal cover

Screw

Screw

2

1

3

1

2

Vertical air flow louver.

Fig. 8-4-6

How to open the screw cap

• 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.

– 26 –

Earth line

Fig. 8-4-7

<Stripping length of power cord>

30mm

10mm

L

N

10mm

40mm

NOTE :

• Use standard wire only.

• Wire type: More than H05-RN-F

Fig. 8-4-8

Screw

Earth line

<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 N•m (0,12 kgf•m)
(7) Secure the connecting cable with the cord clamp.
(8) Fix the terminal cover and front panel on the

indoor unit.

<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.

Push Push

3

1

4

Push

2

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.

Terminal
cover

Screw

Terminal block

Cord
clamp

Screw

Screw

Fig. 8-4-9

50mm

10mm

10mm

40mm

Fig. 8-4-10

2

1

Connecting cable

Earth line

Connecting
cable

about 15cm

<Stripping length of connecting cable>

2
1

For a three conductor cable

NOTE :

• Use stranded wire only.

• Wire type:More than H05 RN-F

Earth
line

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.

Slit (front panel)

Slit (rear 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.

Slit
(front panel)

Slit
(rear panel)

Fig. 8-4-13

– 27 –

<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)

(To the forefront of flare)

196mm

Side of liquid flow

96mm

Side of gas flow

Outward form of indoor unit

R 30mm (Use polisin or the like for bending pipe.)

43mm

˚

80

Use the handle of screwdriver,etc.

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.

(1)

(2)

Hook

Hook here

Installation

1

plate

Push

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

Auxiliary
pipes

Installation
plate

• 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.

Connecting
cable

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.

Push Push

Fig. 8-4-16

– 28 –

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.

Do not rise the drain hose.

50 mm
or more

Do not put the
drain hose end
into water.

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

Drain hose

Inside the room

Fig. 8-4-18

Do not form the drain hose
into the wared shape.

Do not put the drain
hose end in the
drainage ditch.

Extension drain hose

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.

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.

Wall

Drain guide

Space for pipes

Fig. 8-4-19

Strong
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.

– 29 –

8-5-1. Refrigerant Piping Connection
<Flaring>

(1) Cut the pipe with a pipe cutter.

90˚

Obliquity

Roughness

Warp

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

Fig. 8-5-2

(2) Insert a flare nut into the pipe, and flare the pipe.

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

Fig. 8-5-3

A

Outer

dia.

6,35mm

9,52mm

<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.

Outer dia.

6,35mm

9,52mm

Tightening touque

N•m (kgf•m)

16 ~ 18 (1,6 ~ 1,8)

30 ~ 42 (3,0 ~ 4,2)

Manifold for R22 Manifold for R410A

Por t
size

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).

Half union or packed valve

Externally
threaded
side

Use a wrench
to secure.

Fig. 8-5-4

Flare nut

Internally
threaded
side

Use a torque wrench
to tighten.

(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.

– 30 –

Indoor unit

Pressure gage

Low pressure side handle

Charge hose (A)

Outdoor unit

Gas
(Ø9,52)

C

D

A

B

Liquid
(Ø6,35)

Fig. 8-5-5

Manifold valve

Lo Hi

Service port

Packed
valve

High pressure
side handle

Charge
hose (B)

VP

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.

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 N•m (3,0 ~ 4,2 kgf•m)
Liquid pipe side (Ø6,35) : 16 ~ 18 N•m (1,6 ~ 1,8 kgf•m)
Service port cap : 9 ~ 10 N•m (0,9 ~ 1,0 kgf•m)

<A5 mm hexagon wrench is required.>

Flare nut

Valve body

Wrench

<Stripping length of connecting cable>

Earth line

50mm

Terminal block

Terminal
screw

Connecting
cable

60mm

10mm

2

1

10mm

12

Screw

Cord clamp

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.

Earth line

Stopper

Service port

Valve stem

Service port cap

Valve stem cap

Note : Service port at Gas pipes valve only.

Fig. 8-5-6

5mm

NOTE :

• Wipe type : More than H05 RN-F

– 31 –

8-6. Others

8-6-1. Gas Leak Test

Flare nut connections (indoor unit)

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.

C

D

Electric parts
cover

Flare nut

connections

(Outdoor unit)

B

Valve stem cap connection

Valve stem cap
connection

A

Service port

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.

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

*

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
button

TEMPORARY

Fig. 8-6-2

– 32 –

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 220–240V (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

When the power plug or the power
cord of the indoor unit is inserted,

1

the OPERATION lamp on the
setting indication part blinks.

Fan speed remains unchanged in

2

the dry mode.

The compressor will not switch on

3

or off even when the thermo. control
is operated in the dry operation.

Compressor does not work though

4

room temperature is in the range of
turning the compressor on.

During automatic operation, the

5

operation mode changes.

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.

Fan speed is automatically controlled in the dry mode.

In the dry mode, the compressor goes on and off at regular intervals,
independent of the thermo. control.

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.

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.

When the power is turned on, the

6

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.

– 33 –

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

OPERATION display blinking (1 Hz) Power failure (when power is ON)

A

OPERATION display blinking (5 Hz) Thermo. sensor (TA) short/break

B

OPERATION display blinking (5 Hz)

C

OPERATION display blinking (5 Hz) Indoor fan lock, abnormality of indoor fan

D

OPERATION display blinking (5 Hz) Indoor P.C. board failure

E

OPERATION, TIMER and FAN-ONLY display blinking (5 Hz)

F

Heat exchanger sensor (TC) short/break

• Gas shortage, other refrigerant cycle trouble

• Heat exchanger sensor open/break/short

• Overload relay trouble

(1) Judgement from defective operation or abnormal operation

Table 9-2-2

Symptom Check Primary judgement

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 not possible.

Remote control is possible. OK.

The outdoor fan does
not rotate

The compressor operates.

The compressor does not operate. The inside part is defective.

The outdoor part is defective.
(outdoor fan motor)

– 34 –

(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 ]

1

Push the [CHK] button with a thin tip of pencil or
others. The remote control display shows “ ”.

MODE FANTEMP.

AUTO

COOL

DRY

FAN ONLY

Hr.ON OFF TIMER

TEMP.

4

START/STOP

AUTO

LOW

MED.

C

HIGH

2
3

6

SET

AUTO

MODE

ACL CHK

TIMER

ON OFF RSV CNL

WC-E1BE

FAN

ECONO.

1

2

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.)

3

Operating “ ” key, the 35 check codes from “ ”
to “ ” are sent.

4

To reduce the check code number, push the “ ”
key of TEMP.
—> <—> <—> <--

--> <—> <---> <—

5

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 ]

Table 9-2-3

Block level Diagnosis function

Check

code

Block

Indoor
P.C. board

Check

code

Symptom

Thermo. sensor
short/break.

Heat exchanger
sensor
short/break.

Indoor fan lock,
abnormality of
indoor fan or
thermal fuse break.

Abnormality of
other indoor unit
P.C. board.

6

Push the [START/STOP] button.
Display screen returns to one before check.
The servicing check operation can be also
released by [ACL] button.

Air

Con dition er

status

Continued
operation

Continued
operation

All off

All off Indicated when

Condition

Indicated when
detected abnormal

Indicated when
detected abnormal

Indicated when
detected abnormal

detected abnormal

Judgment and action

1.Check thermo. sensor.

2.If it is OK, check P.C. board.

1.Check heat exchanger
sensor.

2.If it is OK, check P.C. board.

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.

“ ”

“ ”

– 35 –

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.?

Shut off the power supply
from AC outlet once and
turn it on after 5 seconds.

NO

Does the OPERATION

lamp blink?

YES

Does the power turn

on by pushing the

[START/STOP] button

of the remote control?

YES

Does the fuse

(F01) blow?

NO

YES

Parts (R21, R22, SG01,

Q01, T01) are defective.

Does the transmission

control flash normally and

(No problem)

C15, C01, DB01, C02,

indicator of remote

transmit certainly?

YES

Operation

Check Items

Main cause

Countermeasure

Symptom

NONO

Remote control

is defective.

Replace the
remote control.

Does the thermal

(Under PF. Terminal)

Is the indication voltage

NO

(DC12V or 5V) of main

PC board correct?

Is the voltage

across C02 measured

DC310V~340V?

YES

Is the secondary

voltage of SW

transformer (T01)

measured DC12V,

and DC7V ?

YES

fuse blow?

NO

YES

Refer to the paragraph

NO

“Pre-check”, or defective circuit
before power P.C. board block.

Shut off the power
supply once, and turn

NO

it on again after dis­connecting the motor
connector CN10

YES

*

Wrong wiring of

AC cord or connecting

cable is defective.

Does the CN13

connector the wrong

connecting?

secondary voltage
of SW transformer

.

measured DC12V,

and DC7V?

YES

Is the

YES

NO

NO

P.C. board
is defective.

SW transformer

(T01) or Tr (Q01)

for power supply

is defective.

Replace the
thermal fuse set.
Check connection.

Replace the main
P.C. board.

Re-wiring the cable.

Replace the main
P.C. board.

Motor is defective.

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.

– 36 –

9-3-2. Power can not be Turned on after Replacing Indoor P.C. Board

<Checking Procedure>

Connect the AC

Power supply

1 2

Indoor
terminal
block

NO

White

Blue

Power
terminal
block

Does the OPERATION

lamp blink?

YES

Black

9-3-3. Outdoor Unit does not Operate

Is it wired as shown

in Figure below?

Brown

C02

N L

PC board

YES

3

RY01

43

NO

4

RY02

Return the wiring of the
power relay is returned to
the normal procedure.

To the paragraph of
“No Power turns on”.

T02

Shut off the power supply
from AC outlet once and
turn it on after 5 seconds.

Does the OPERATION lamp blink?

YES

Does the power turn on by

pushing the [START/STOP] button

of the remote control?

YES

Is AC 220–240V (AC220V)

supplied between terminal block

1 - 2 ?

YES

Is cable connection

between indoor and outdoor

units correct?

YES

Check items as following procedure
in 9-3-4, 9-3-5, 9-3-6.

**

NO

NO

NO

NO

See “Power can not be turned on”.

See “Power can not be turned on”.

Relays (RY01, RY02)
or IC31 or IC30 is failure.

Correct cabling between
indoor and outdoor units.

Replace the
P.C. board.

for model RAS-07YKX-T, RAS-10YKX-T

**

– 37 –

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?

YES

Does the power turn on by

pushing the [START/STOP] button

of the remote control?

YES

Is the voltage across the indoor terminal

( 1 - 2 ) AC 220–240V (AC 220V)

YES

Is cable connection between indoor

and outdoor units correct?

YES

Is the voltage across the outdoor terminal

( 1 - 2 ) AC 220–240V (AC 220V)

YES

Are all the cords for compressor normal?

YES

**

**

?

?

NO

NO

NO

NO

NO

NO

See “Power can not be turned on”.

See “Power can not be turned on”.

Relays (RY01, RY02)
or IC31 or IC30 is failure.

Correct cabling between indoor
and outdoor units.

Cables between indoor and
outdoor units are defective.

Re-wire or replace the defective cords.

Replace the
P.C. board.

Is the compressor motor winding normal?

(Check the winding resistor.)

YES

Is the capacitor for compressor normal?

YES

Is the overload relay normal?

YES

Does the compressor start?

YES

Compressor starts but

it stops after a while?

YES

Is the gas quantity normal?

(Check the pressure)

YES

Compressor is defective

NO

NO

NO

NO

NO

Compressor is defective.

Capacitor is defective.

Overload relay is defective.

Compressor is defective.

Gas shortage (Gas leakage)

for model RAS-07YKX-T, RAS-10YKX-T

**

– 38 –

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?

YES

Does the power turn on by

pushing the [START/STOP] button

of the remote control?

YES

Is the voltage across the indoor terminal

( 1 - 2 ) AC 220–240V (AC 220V)

YES

Is cable connection between indoor

and outdoor units correct?

YES

Is the voltage across the outdoor terminal

( 1 - 2 ) AC 220–240V (AC 220V)

YES

Are all the cords for outdoor

fan motor normal?

YES

**

**

NO

NO

NO

?

NO

NO

?

NO

See “Power can not be turned on”.

See “Power can not be turned on”.

Relays (RY01, RY02)
or IC31 or IC30 is failure.

Correct cabling between indoor
and outdoor units.

Cables between indoor and
outdoor units are defective.

Correct the wire or
replace the defective cords.

Replace the
P.C. board.

Is the outdoor fan motor winding normal?

(Check the winding resistance)

YES

Is the capacitor for compressor normal?

YES

Outdoor fan motor is defective.

for model RAS-07YKX-T, RAS-10YKX-T

**

NO

NO

Outdoor fan motor is defective.

Capacitor for outdoor
fan motor is defective.

– 39 –

9-3-6. Only the Indoor Fan does not Operate

< Check procedure >

Shut off the power
supply once.

Turn the power supply.

Does the fan

stop in no operating

status?

YES

Start the operation
with low fan setting
in cool operation.

Does the fan rotate?

YES

Change the setting of
cooling to high fan.

NO

NO

Control P.C. board is defective.

Does AC 120V

or higher voltage apply

to between red and black

lead of fan motor?

YES

Shut off the power supply.

Does the cross

flow fan rotate

normally?

YES

Turn on the power supply.

NO

NO

Replace the 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.

Repair the bearing of
the drain fan.

Does the fan speed

become higher?

YES

Normal

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.

NO

Operation stops

(DC+5V-0V) output between

(blue lead wire) and

lead wire) of the motor connector

(CN10) when rotating the cross

flow fan by hand in no operating

status ? (2 pulses/one turn)

Is the rotation signal

2

(black

YES

Replace the control
P.C. board.

4

NO

Replace the fan motor.

– 40 –

9-4. How to Check the Remote Control (Including the Indoor P.C. Board)

There is no beep from
the indoor unit.

Push the START/STOP button.

The operation lamp of
the air conditioner main
unit does not light.

Is there direct
sunlight on the
receptor of the
air conditioner?

YES

NO

Is there any

thyristor

fluorescent light

near by?

YES

NO

Does the transmission

YES

NO

Is operation

possible when setting

the temporary switch of the

air conditioner main unit to

“TEST RUN” or

“TEMPORARY AUTO”?

NO

possible when the

transmitter is moved

nearer to the infrared

signal receiver of the

indicator blink?

Is operation

air conditioner?

YES

Battery life

NO

Short-circuit the metal
terminal at the side of the
battery compartment
(all-clear terminal) with a pencil.
(wait about 10 seconds)

Push the START/
STOP button

Does the

transmission

indicator light?

YES

NO

Avoid direct
sunlight.

Keep the air

conditioner away

from thyristor

fluorescent light.

YES

Can any signal tone
be heard in a transistor
radio when transmitting

within 5cm distance

from the radio?

YES

P.C. board is failure.

Replace

P.C. board.

After battery replacement,

Note:

shortcircuit the metal terminal at
the side of the battery compartment
(all-clear terminal) with a pencil.

– 41 –

NO

Replace the
batteries

NO

Normal

Is there any

beep and

operation?

YES

Remote control

is failure.

Replace remote
control.

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 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:

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.

– 42 –

(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.

3

Make the operation status by pushing
once the START/STOP button,
except the status of [FAN ONLY],
[ON TIMER].

4 Start the operation with the system

which the time of the restart delay
timer is shortened.

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.

Voltage check

1. Between TP1

(AC 220–240V) (AC 220V)

2. Between + and – of C02

(DC 310 ~ 340V)

3. Between 12V

4. Between 5 V and GND

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 220–240V) (AC 220V)

1. All indicators light for 3 sec..

2. Indicators do not indicate normally
after approximate 3 sec..

1. Compressor does not operate.

2. OPERATION lamp blinks.

and TP2



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.

1. Breaking wire of the relay coil, defective relay
driver. (IC31)

2. Poor contact of relay.

ü

Defective indicator, or poor housing

ý

assembly. (CN13)

þ

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.

7

Turn the power on after connecting
the motor connector.

Star t the operation with the following
condition.

1. Operation [Cooling]

2. Airflow [High fan]

3. Continuous operation

for odel

**

RAS-07YKX-T, RAS-10YKX-T

1. Compressor does not operate.

2. OPERATION lamp blinks.

1. Motor does not rotate.
(The key operation is accept ed.)

2. The motor rotates, but it vibrates too
much.

– 43 –

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.

1. Poor contact of the motor connector.

2. P.C. board is defective.

9-4-2. P.C. Board Layout

Top View

Bottom View

– 44 –

Table 9-4-2 Approximate value of the sensor (thermistor) resistance (TA, TC)

(= kΩ)

Temperature

Sensor

0°C10°C20°C25°C30°C

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]

START/STOP

AUTO

MODE

TEMP.

SET

ACL CHK

TIMER

FAN

ECONO.

buttons are released.)

(3) Pushing [START/STOP] buttons sends operation

code + timer short code.

ON OFF RSV CNL

WC-E1BE

(4) The timer short mode is released by only a

transmission. Therefore, repeat steps from (2) to
perform the timer short mode again.

[CHK] button

[CNL] button

Fig. 9-4-1

– 45 –

10. PART REPLACEMENT

g

y

10-1. Indoor Unit

No. Part name Procedure Remarks

Front panel 1) After stopping the operation of the air conditioner, be

Q

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.

5 5

2

3

3

4

3

3

2

3

3

Electrical part

R

assembly

Drain-pan

S

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

nail located on its lower portion, draw the electrical

fixin
part base out toward

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.)

1) Perform the process R above.

2) Remove the drain-pan by pressing the four hooks
downwards.
(Keep it with the drain hose.)

Screw

Drain guide

Screw

Lower fixing nail

When assembling dress the connecting
cable in loop and put it into the drain-pan.

Hooks

Upper nail

Electrical
part cover

Screw

TC sensor

– 46 –

Cross
flow fan

Ribs

No. Part name Procedure Remarks

Horizontal grille

T

Note:

The horizontal
grille can not be
removed without
removing the

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.

louver motor.

Heat exchanger 1) Perform the process S.

U

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.

Cross flow fan 1) Perform the process S.

V

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.

Horizontal grille

Hooks fixing the
heat exchanger

Shaft bearing
base

Screw fixing the
heat exchanger

Hook

Screw

Louver
motor

Screw

Hooks

Pipe holder

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.

Shaft bearing 1) Perform the process V above.

W

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.

Fan motor 1) Perform the process U above.

X

2) Perform the process

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.

-2) above.

V

Shaft
bearing
base

6~7mm

Ribs

Ribs

Cross

Cross
flow fan

flow fan

Rear plate

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.

– 47 –

y

10-3. Outdoor Unit

No. Part name Procedure Remarks

Common

Q

procedure

Capacitor for

R

compressor

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
it pulling out upward.

1) Remove the fixing screw of the capacitor band.
(1- ST2T Ø4 x 8 l)

2) Remove the cable connected to the terminal.

ou, and remove

Remove 7-ST1T
Ø4 x 10 l

2-ST2T Ø4 x 12

2-ST2T Ø4 x 12

Refer to [Specifications of Electric Parts]
in pages 10 and 11.

l

l

2-ST1T Ø4 x10

l

Capacitor for

S

fan motor

Overload

T

relay
(Except for

07YA-ES &

10YA-ES) up.

1) Remove the fixing screw of the capacitor band.
(1- ST2T Ø4 x 8 l)

2) Remove the cable connected to the terminal.

1) Perform the process Q above.

2) Remove terminal cover of compressor.

3) Remove overload relay holder and pull overload relay

4) Remove Fustons of leads.

Compressor

– 49 –

11. EXPLODED VIEWS AND PARTS LIST

11-1. Indoor Unit (1)

RAS-07YK-E, RAS-07YK-ES, RAS-10YK-E, RAS-10YK-ES

404

402

405

406

413

403

412

Location

No. No.

402 43T60002 Base, Terminal

403 43T69004 Sensor, Heat Exchanger

404 43T69005 Sensor, Ther mostat

405 43T60061 Fuse Set, Thermal 77°C

Par t

Description

3P, AC 300V, 20A

10kΩ, 25°C

10kΩ, 25°C

402

Location

No. No.

406 43T69055 P.C. Board Assembly,

406 43T69054 P.C. Board Assembly,

412 43T69031 P.C. Board Assembly,

413 43T61001 Base, E-Parts

Part

Description

MCC-798 (07YK-E, 07YK-ES)

MCC-798 (10YK-E, 10YK-ES)

WRS-LED, MCC-766

ABS, Black, UL94-5V

– 50 –

RAS-07YKX, RAS-07YKX-T, RAS-10YKX, RAS-10YKX-T, RAS-11YKX, RAS-10YK-HX

402

403

405

406

413

404

408

412

Location

No. No.

402 43T60002 Base, Terminal

403 43T69004 Sensor, Heat Exchanger

404 43T69005 Sensor, Ther mostat

405 43T60301 Fuse Set, Thermal 77°C

406 43T69055 P.C. Board Assembly,

Par t

Description

3P, AC 300V, 20A

10kΩ, 25°C

10kΩ, 25°C

MCC-798 (07YKX, 07YKX-T)

Location

No. No.

406 43T69054 P.C. Board Assembly,

408 43T60042 Cord, Power (without plug)

408 43T60303 Cord, Power (with plug)

412 43T69031 P.C. Board Assembly,

413 43T61001 Base, E-Parts

Part

Description

MCC-798 (10YKX, 10YKX-T,
10YK-HX, 11YKX)

(10YK-HX only)

WRS-LED, MCC-766

ABS, Black, UL94-5V

– 51 –

11-1. Indoor Unit (2)

RAS-07YK-E, RAS-10YK-E, RAS-10YK-ES

221

215

202

201

211

214

210

216

217

206

207

203

222

208

240

209

229

212

228

213

238

230

220

219

223

224

218

231

235

225

239

233

232

226

242

227

236

241

204

Location

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 Ass’y, Horizontal for

211 43T09304 Louver Ass’y (07YK-E)
211 43T09303 Louver Ass’y (10YK-E, 10YK-ES)
212 43T70301 Hose Ass’y, Drain
213 43T21302 Motor, Stepping
214 43T07001 Bushing
215 43T44301 Refrigeration Cycle Ass’y

215 43T44003 Refrigeration Cycle Ass’y

215 43T44302 Refrigeration Cycle Ass’y

216 43T47006 Pipe, Delivery
217 43T47305 Pipe, Suction (07YK-E)

Part

Description

Service

(07YK-E)

(10YK-E)

(10YK-ES)

234

237

Location

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 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

Part

Description

– 52 –

RAS-07YK-ES

201

202

206

203

207

210

214

211

216

217

215

221

222

208

240

209

229

212

228

213

238

230

220

219

223

224

218

231

235

225

239

233

232

226

242

227

236

241

204

Location

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

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

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

Part

Description

Service

(07YK-ES)

234

237

Location

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

Part

Description

– 53 –

RAS-07YKX, RAS-07YKX-T, RAS-10YKX, RAS-10YKX-T, RAS-11YKX, RAS-10YK-HX

228

230

231

240

222

221

229

215

202

206

201

211

214

210

216

217

220

223

224

227

225

218

207

208

212

213

209

238

219

235

239

203

233

232

226

242

236

204

Location

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 Ass’y, Horizontal for

211 43T09301 Louver Ass’y (07YKX, 07YKX-T)
211 43T09302 Louver Ass’y

211 43T09303 Louver Ass’y (10KX-HX)
212 43T70301 Hose Ass’y, Drain
213 43T21302 Motor, Stepping
214 43T07001 Bushing
215 43T44301 Refrigeration Cycle Ass’y

215 43T44003 Refrigeration Cycle Ass’y

215 43T44023 Refrigeration Cycle Ass’y

216 43T47006 Pipe, Delivery
217 43T47305 Pipe, Suction (07YKX, 07YKX-T)

Part

Description

Service

(10YKX, 11YKX, 10YKX-T)

(07YKX, 07YKX-T)

(10YKX, 10YK-HX, 11YKX)

(10YKX-T)

234

237

Location

No. No.

217 43T47005 Pipe, Suction

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 Owner’s Manual

234 43T85304 Owner’s Manual

234 43T85305 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
242 43T60305 Connector, fan motor

Part

Description

(10YKX, 10YK-HX, 11YKX)

(07YKX, 10YKX, 11YKX)

(07YKX-T, 10YKX-T)

(10YK-HX)

– 54 –

11-2. Outdoor Unit

RAS-07YA-E, RAS-10YA-E, RAS-10YA-HX

16

21

4

14

6

5

20

22

8, 9

3

13

2

12

10, 11

17

15, 23

18

19

7 : CAPILLARY TUBE

1

23 : NUT, FLAT WASHER (07YA-E)

Location

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

Par t

Description

24 : DRYER (10YA-E, 10YA-HX)

Location

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

19 43T41304 Compressor, PH80T1-4C

19 43T41405 Compressor, 2PS146D5AB02

20 43055470 Capacitor, 15µF 400V

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

Part

Description

(10YA-E, 10YA-HX)

(07YA-E)

(10YA-E, 10YA-HX)

(07YA-E only)

– 55 –

RAS-10YA-ES

16

19

4

14

6

5

18

20

8, 9

3

13

2

12

10, 11

15, 22

17

7 : CAPILLARY TUBE

1

21 : DRYER

Location

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

Par t

Description

– 57 –

Location

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

Part

Description

RAS-07YAX, RAS-07YAX-T, RAS-10YAX, RAS-10YAX-T, RAS-11YAX

16

20 21 22

4

14

6

5

8, 9

3

13

2

12

10, 11

17

15, 23

18

19

7 : CAPILLARY TUBE

1

24 : DRYER (10YAX, 10YAX-E, 11YAX)

Location

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

12 43021981 Motor, Fan, UE6-31C5P

13 43T47001 Nut, Flange
14 43T19005 Handle
15 43T49001 Rubber, Cushion

Part

Description

(07YAX, 07YAX-T, 10YAX, 11YAX)

(10YAX-T)

Location

No. No.

16 43T19002 Stopper, Guard
17 43T63001 Holder, OL-Relay

18 43T54302 Relay, Over Load

18 43T54303 Relay, Over Load

19 43T41304 Compressor, PH80T1-4C

19 43T41402 Compressor, PH102T1-4C

19 43T41409 Compressor, RM5510GNE92

19 43T41405 Compressor, 2PS146D5AB02

20 43055470 Capacitor, 15µF 400V

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

Part

Description

(07YAX, 07YAX-T, 10YAX)

(07YAX, 07YAX-T)

(10YAX, 10YAX-T, 11YAX)

(07YAX, 07YAX-T)

(10YAX)

(10YAX-T)

(11YAX)

(07YAX, 07YAX-T)

– 58 –

TOSHIBA CARRIER (THAILAND) CO., LTD.

144/9 MOO 5, BANGKADI INDUSTRIAL PARK, TIVANON ROAD,

TAMBOL BANGKADI, AMPHUR MUANG, PATHUMTHANI 12000, THAILAND.