Toshiba RAS-10SKHP-E, RAS-07S2AH-E, RAS-10S2AH-E Service Manual

SERVICE MANUAL

AIR CONDITIONER

SPLIT WALL TYPE

RAS-07SKHP-E / RAS-07S2AH-E
RAS-10SKHP-E / RAS-10S2AH-E

FILE NO. SVM-07023-1

Revised May, 2007

CONTENTS

1. SPECIFICATIONS

2. CONSTRUCTION VIEWS

2-1 Indoor Unit

2-2 Outdoor Unit (RAS-10S2AH-E)

2-3 Outdoor Unit (RAS-07S2AH-E)

3. WIRING DIAGRAM

4. SPECIFICATION OF ELECTRICAL PARTS

4-1 Indoor Unit (RAS-10SKHP-E, RAS-07SKHP-E)
4-2 Outdoor Unit (RAS-10S2AH-E)
4-3 Outdoor Unit (RAS-07S2AH-E)

5. REFRIGERATION CYCLE DIAGRAM

5-1 RAS-10SKHP-E / RAS-10S2AH-E
5-2 RAS-07SKHP-E / RAS-07S2AH-E

FILE NO. SVM-07023

6. CONTROL BLOCK DIAGRAM

7. OPERATION DESCRIPTION

7-1 Remote control
7-2 Outline of Air Conditioner Control
7-3 Description of Operation Mode
7-4 High-Temperature Limit Control
7-5 Low-Temperature Limit Control
7-6 Defrost Operation
7-7 Current Limit Control
7-8 One-Touch Comfort
7-9 Hi POWER Mode
7-10 QUIET Mode
7-11 ECO Operation

7-12 COMFORT SLEEP mode
7-13 Auto Restart Function
7-14 Self-Cleaning Function

- 1 -

8. INSTALLATION PROCEDURE

8-1 Safety Cautions
8-2 Installation Diagram of Indoor and Outdoor Units
8-3 Installation
8-4 Indoor Unit
8-5 Outdoor Unit
8-6 How to Set Remote Control Selector Switch
8-7 Others

9. TROUBLESHOOTING CHART

9-1 Troubleshooting Procedure
9-2 Basic Check Items
9-3 Primary Judgement
9-4 Self-Diagnosis by Remote Control (Check Code)
9-5 Troubleshooting Flowcharts

9-6 Troubleshooting for Remote Control

FILE NO. SVM-07023

10. PART REPLACEMENT

10-1 Indoor Unit
10-2 Outdoor Unit

11. EXPLODED VIEWS AND PARTS LIST

11-1 Indoor Unit (E-Parts Assy)
11-2 Indoor Unit

11-3 Outdoor Unit (RAS-10S2AH-E)
11-4 Outdoor Unit (RAS-07S2AH-E)

- 2 -

1. SPECIFICATIONS

FILE NO. SVM-07023

MODEL

RAS-10SKHP-E / RAS-10S2AH-E

RAS-07SKHP-E / RAS-07S2AH-E

ITEM Cooling Heating Cooling Heating

Capacity

Phase 1∅

Power source V 220 − 240

Power consumption kW 0.77 0.81 0.74 0.76 0.61 0.68 0.54 0.59
Power factor % 97 94 94 91 98 96 98 96

Running Indoor A 0.15
current Outdoor A 3.45 3.43 3.30 3.23 2.69 2.77 2.35 2.40
Starting current A 19 15
Moisture removal lit/h 1.2
Noise Indoor (H/M/L) dB 40/36/32 38/33/28

Outdoor (220-240V) dB

Refrigerant

Refrigerant control Capillary tube

Interconnection

pipe

Name of refrigerant R-22
Rated amount kg 0.75 0.64

Gas side size mm 9.52

Connection type Flare connection

Liquid side size mm 6.35

Connection type Flare connection

Maximum length
(One way)

Maximum height
difference

220V 240V 220V 240V 220V 240V 220V 240V

kW 2.50 2.55 2.70 2.72 2.30 2.50 2.30 2.50

Hz 50

47

m 10*

m 5

49 48

50

∅

∅

1

46 47

47

48

INDOOR UNIT RAS-10SKHP-E RAS-07SKHP-E

Height mm 250

Dimensions Width mm 740

Depth mm 195

Net weight kg 8

Evaporator type Finned tube

Indoor fan type Cross flow fan

High fan m3/h 540 560 540

Airflow volume Medium fan m3/h 460 500 470

Low fan m3/h 390 400 370

Fan motor output W 20

Air filter Honeycomb woven filter with PP frame

540
440
350

OUTDOOR UNIT RAS-10S2AH-E RAS-07S2AH-E

Height mm 550 530

Dimensions Width mm 780 660

Depth mm 290 240

Net weight kg 32 25

Condenser type Finned tube

Outdoor fan type Propeller fan

Airflow volume m3/h 1740 1850 1740 1850 1640 1720 1640 1720

Fan motor output W 20

Compressor

Safety device Fuse, Overload relay

Louver type Automatic louver
Usable outdoor temperature range °C 15 ~ 43 −10 ~ 24 21 ~ 43

Model PH150X1C-4DZDN3
Output W 750

PH108X1C-4DZDN2

605

15 ~ 43

– 3 –

Note : 1

·

Capacity is based on the following temperature conditions.

FILE NO. SVM-07023

Temperature

Indoor unit inlet air temperature

Outdoor unit inlet air temperature

Condition

Cooling Heating

(DB) 27°C20°C

(WB) 19°C15°C

(DB) 35°C7°C

(WB) 24°C6°C

JIS C9612

- 4 -

2-1. Indoor Unit

FILE NO. SVM-07023

2. CONSTRUCTION VIEWS

Front panel

60

8

Knock out system

Air inlet

250

50

55 60

105 135

Air filter

740

Air outlet

500

Heat exchanger

60 55

Knock out system

50

195

58

52

8

Drain hose (0.5m)

45

250

Hanger

13590

235

215

Hanger

145

290

605

– 5 –

235

215

Hanger

Hanger

145

135 90

Installation plate outline

Center line

Connecting pipe (0.37m)

6.35)(Flare

Connecting pipe (0.37m

(Flare 9.52)

For stud bold ( 6)

26

40 165 45

38

)

8~

10)For stud bold (

56

Wireless remote control

19

157

2.2. Outdoor Unit (RAS-10S2AH-E)

A

30

600

50

36

320

306

A detail Drawing (Back leg)

R5.5

R

Ø

15

6 hole

86

320

Ø

25 Drain outlet

FAN-GUARD

436

Ø

108 125

2

-

Ø

11 x 14

(For 8 -

Ø

Ø

Hole

10 anchor bolt)

FILE NO. SVM-07023

306

320

Ø

6 hole

11x14 hole

Ø

B Detail Drawing (Front leg)

36
50

R

15

COVER-PV

Z

290

550

45 or more

275

321
342

Electrical part cover

Liquid side
(Flare 6.35)

Ø

Gas side
(Flare 9.52)

Ø

5

4

S

ervice port

-Ø 10 anchor bolt)

Ø

Z View

600

Air intlel

9060090

69

129

84

2

-R5- 5x17L UShape (For 8

320

100 or more

Air outlel

400 or more

Installation dimension

− 6 −

600 or more

2- 11x14 Long holes(For 8 - 10 anchor bolt)

Ø

Ø

Ø

2-3. Outdoor Unit (RAS-07S2AH-E)

FILE NO. SVM-07023

C

L

C

L

- 7 -

3. WIRING DIAGRAM

RAS-10SKHP-E / RAS-10S2AH-E
RAS-07SKHP-E / RAS-07S2AH-E

FILE NO. SVM-07023

BRW

L

BLU

N

GRN & YEL

SINGLE PHASE
220-240V 50/60Hz

BLK

WHI

BLK
P04

CN31

T02

C.T.

1 1

3 3

CN27

CN03

1
1

BLK

2

THERMO

2

BLK

SENSOR (TA)

SG01

DSA

BLK

PINK

1
1

R22

VARISTOR

3

4

RY03

73 C x2

THERMAL FUSE

PINK

2

CN04

2

T6.3A 250VAC

RY01

CN01

2

1

HEAT EXCHANGER

2

1

BLK

BLK

SENSOR (TC)

RY04

CR02

CR01

LOUVER
MOTOR

YEL

5
5

R

1

STO

C01

R2

VARI

MAIN P.C. BOARD
WP-015

INFRARED RAYS RECEIVE

AND INDICATION PARTS

CN25

BLU

WHI

YEL

YEL

YEL

34

2

1

34

2

1

CN07

DC5V

Voltage
Regulator

C02

L01

145 C

1 1
2 2
3 3
4 4
5 5

AC FAN MOTOR

BLU

IC35

CN10

66

321
321

BLU

321
321

C15

BLK
GRY
YEL

BRW

RED

WHI

54 8
54 8

BLU

BLU

54 8
54 8

R319

5
5

6

7

6

7

WHI

BLU

BLU

6

7

CN14

6

7

Micro
Power
Module

DC12V

+

C63

DB01

3
3

CN11

21 3

1

21 3

1

INDOOR
TERMINAL
BLOCK

OUTDOOR
TERMINAL
BLOCK

OVER LOAD RELAY

COMPRESSOR

BLK

BLK

PNK

WHI

BLK

1

(L)2(N)

1

RED

WHI

2

BLK

SOLENOID COIL

RED

RED

CAPACITOR

RED

3

3

BLK

CAPACITOR

FAN
MOTOR

BLU

4

4

WHI BLK

− 8 −

INDOOR

OUTDOOR

CHASSIS

FILE NO. SVM-07023

4. SPECIFICATION OF ELECTRICAL PARTS

4-1. Indoor Unit (RAS-10SKHP-E, RAS-07SKHP-E)

No. Parts name Type Specifications

1 Fan motor (for indoor) AFS-220-20-4AR AC Motor with 145 °C thermo fuse
2 Thermo sensor (TA-sensor) 10k at 25 C
3 Micro power module (M01) RM1260V
4 Microcontroller unit (IC30) TMP87CM40AFG-6P69
5 Heat exchanger sensor

(TC-sensor)
6 Line filter (L01) LC*SS11V-06270 27mH, 600mA
7 Bridge rectifier (DB01) DB105G 1A, 600 V

8 Capacitor (C63) EKMH401VSN470MP20S 47mF, 400 V

9 Fuse (F01) BET6.3A 6.3A, 250VAC

10 Varistor (R21, R22) TND15G-561KB0SLAA0 560 V
11 Resistor (R319) RF-2TK5R6 5.6 , 2 W
12 Louver motor 24BYJ48 12VDC
13 Relay (Comp., RY01) G4A-1A-E-CA Rating 20A/AC250 V, 12VDC
14 Relay (Fan, RY03) G5NB-1A Rating 3A/AC250 V, 12VDC
15 Relay (Solenoide, RY04) G5NB-1A Rating 3A/AC250 V, 12VDC

m

W

W

10k at 25 C

W

°

°

4-2. Outdoor Unit (RAS-10S2AH-E)

No.

1 Compressor PH180X1C-4DZDN3 Winding resistance ( ) C-R C-S

2 Fan motor (for outdoor) Winding resistance ( ) Red-Black White-Black

3

4

5 Overload relay JMRA99269-9103 U/T : 7.3A (80°

Parts name Type Specifications

Output (Rated) 1000 W, 2 poles, 1 phase, 220 - 240 V, 50Hz

W

°

(at 20 C) 3.33 3.78
Output (Rated) 20 W, 6 poles, 1 phase, 220 - 240 V, 50Hz

W

C), OPEN :

Running capacitor
(for fan motor)

Running capacitor
(for compressor)

SKF-240-20B

(at 20°C

DS451155NPQB AC 450 V ~, 1.5mF

RS44B256U0214S AC 440 V ~, 30mF

235.2 260.1

135±5°C, CLOSE : 69±11°C

- 9 -

FILE NO. SVM-07023

4-3. Outdoor Unit (RAS-07S2AH-E)

No. Parts name Type Specifications

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

1 Compressor PH108X1C-4DZDN2 Winding resistance (Ω) C-R C-S

(at 20°C) 4.84 4.40
Output (Rated) 20W, 6poles, 1 phase, 220 − 240V, 50Hz

2 Fan motor (for outdoor)

Running capacitor

3

(for fan motor)
Running capacitor

4

(for compressor)

5 Overload relay

DS451155NPQB AC 450V~, 1.5 F

JMRA99208-9102

SKF-240-20B

RS44B256U0213S AC 440V~, 25 F

Winding resistance (Ω) Red-Black White-Black
(at 20°C)

m

m

U/T: 4.2A (80°C), OPEN: 135±5°C, CLOSE: 69±11°C

235.2

260.1

- 10 -

5. REFRIGERATION CYCLE DIAGRAM

5-1. RAS-10SKHP-E / RAS-10S2AH-E

FILE NO. SVM-07023

Indoor unit

Cooling

0.39 m
(Connecting pipe)

Æ9.52

O.D.:9.52 mm O.D.:6.35 mm

Cooling

Heating

Heating

P

Packed valve

(Æ9.52)

Heating

4-way valve

Cooling

Compressor

PH150X1C-4DZDN3

Accumulator

Heat exchanger

Cross flow fan

T1

Capillary tube

Æ1.2 x 500l

0.49 m
(Connecting pipe)
Æ6.35

Packed valve

(Æ6.35)

Capillary tube

Æ0.8 x 700l

Heat exchanger

Refrigerant
R22 : 0.75 kg.

Cooling
Heating

Propeller fan
Outdoor unit

Mark ( ) means check points of Gas Leak.

Ambient temp.

50Hz

Standar d

pressure

(MPaG)

P

Surface temp. of heat

exchanger inter changing

pipe

T1

(°C)

Fan speed

(indoor)

conditions DB/WB

(°C)

Indoor Outdoor

Standard 1.59 41.0 High 20/15 7/6

Heating Overload*1 2.14 ~ 2.36 50.0 ~ 58.0 Low 27/- 24/18

Low temperature 1.30 32.0 High 20/-

-10/-10

Standard 0.52 12.0 High 27/19 35/24

Cooling Overload 0.62 16.0 High 32/23 43/26

Low temperature 0.44 5.0 Low 21/15 21/15

Note

· Measure the heat exchanger temperature at the center of U-bend. (By means of TC sensor)

*1 · During heating overload operation, a value for the high temperature limit control operation is included.

- 11 -

5-2. RAS-07SKHP-E / RAS-07S2AH-E

FILE NO. SVM-07023

Indoor unit

Cooling

0.39m
(Connecting pipe)
∅9.52

O.D.:9.52mm O.D.:6.35mm

Cooling

Heating

Heating

P

Packed valve

(∅9.52)

Heating

4-way valve

Cooling

Compressor

PH108X1C-4DZDN2

Accumulator

Heat exchanger

Cross flow fan

T1

0.49m
(Connecting pipe)
∅6.35

Packed valve

(∅6.35)

Capillary tube

∅1.0x1000S

(2 pcs.)

Heat exchanger

Refrigerant
R-22 : 0.64 kg.

Fan speed

(indoor)

Ambient temp.

conditions DB/WB

(°C)

Indoor Outdoor

Cooling
Heating

50Hz

Propeller fan
Outdoor unit

Standard

pressure P

(MPaG)

Mark( )means check points of Gas Leak.

Surface temp. of heat

exchanger interchanging

pipe T1 (°C)

Standard 1.32 35.0 High 20/– 7/6

Heating Overload 1.93 50.0 Low 27/– 24/18

Low temperature 1.14 30.0 High 20/––10/–10
Standard 0.52 13.0 High 27/19 35/24

Cooling Overload 0.68 18.0 High 32/23 43/26

Low temperature 0.32 7.0 Low 21/15 21/15

Note :

• Measure the heat exchanger temperature at the center of U-bend. (By means of TC sensor)

– 12 –

6. CONTROL BLOCK DIAGRAM

RAS-10SKHP-E / RAS-10S2AH-E, RAS-07SKHP-E / RAS-07S2AH-E

FILE NO. SVM-07023

Heat Exchange sensor

Thermo. Sensor

Current Sensor

(Compressor Current)

Infrared Rays Signal Reciver

Main Unit Control Panel

Functions

• Louver Control

•3-minutes Delay at Restart

for Compressor

Initiallizing Circuit

Clock Frequency
Oscillator Circuit

Power Supply

Circuit

Noise Filter Relay Driver, Louver Driver

•Motor Revolution Control

•Processing

(Temperature Processing)

•Timer

Compressor

ON/OFF

Signal

Outdoor Fan

M.C.U.

ON/OFF

Signal

4-Way Valve

ON/OFF

Signal

Operation

Display

Timer

Display

Indoor Fan

Motor

Louver

ON/OFF

Signal

Louver

Motor

220-240 V~, 50Hz

REMOTE CONTROL

Relay

RY01

Compressor 4-Way Valve

Remote Control

Operation (START/STOP)

Operation Mode Selection

AUTO, COOL, DRY, HEAT, FAN ONLY

Temperature Setting

Fan Speed Selection

ON TIMER Setting

OFF TIMER Setting

Louver Auto Swing

Louver Direction Setting

ECO

Relay

Outdoor Fan Motor

RY03

Infrared Rays

Relay

RY04

Hi power

Filter Reset

− 13 −

7. OPERATION DESCRIPTION

FILE NO. SVM-07023

7-1. Remote control

7-1-1. Function of Push Putton

11 Infrared signal emitter

1

11

2

Start/Stop button

3

Mode select button (MODE)

4

Temperature button (TEMP)

5

Fan speed button (FAN)

6

Swing louver button (SWING)

7

Set louver button (FIX)

8

On timer button (ON)
Off timer button (OFF)

9

18

10

Sleep timer button (SLEEP)

19

Timer setup button (SET)

11
12

20

Timer clear button (CLR)

13

Memory and Preset button (PRESET)

14

One Touch button (ONE-TOUCH)

15

High power button (Hi-POWER)

16

Economy button (ECO)

17

Quiet button (QUIET)

18

Comfort sleep button (COMFORT SLEEP)

19

Filter reset button (FILTER)

Clock Reset button (CLOCK)

20
21

Check button (CHK)

13

14

17

10
21

19

1

TOSHIBA

PRESET

ONE-TOUCH

2

QUIET

SWING

FIX Hi-POWER ECO

6
7

8

TIMER

SLEEP

CHK

ON

FILTER

TEMP

OFF

COMFORT

CLOCK

FAN

MODE

SLEEP

5

4

3

18

15
16

CLR

SET

12

9

11

20

− 14 −

FILE NO. SVM-07023

7-1-2. Display of Remote Control

All indications, except for the clock time indicator, are displayed by pressing the button.

1. Transmission mark

This transmission mark
remote controller transmits signals to the indoor
unit.

indicates when the

2. Mode indicator

Indicates the current operation mode.
(AUTO : Automatic control, A : Auto changeover
control,

: Cool, : Dry, : Heat, : Fan only)

3. Temperature indicator

Indicates the temperature setting.
(17°C to 30°C)

4. FAN speed indicator

Indicates the selected fan speed.
AUTO or five fan speed levels

(

LOW , LOW+ , MED , MED+ ,
HIGH ) can be shown.
Indicates AUTO when the operating mode is

either AUTO or

: Dry.

5. TIMER and clock time indicator

The time setting for timer operation or the clock
time is indicated.

The current time is always indicated except
during TIMER oper ation.

6. Hi-POWER indicator

Indicates when the Hi-POWER operation starts.
Press the Hi-POWER button to start and press it

again to stop the operation.

7. (PRESET) indicator

Flashes for 3 seconds when the PRESET button is
pressed during operation.

The
button for more than 3 seconds while the mark is

flashing.
Press another button to turn off the mark.

mark is shown when holding down the

8. ECO indicator

Indicates when the ECO is in activated.
Press the ECO button to start and press it again

to stop operation.

9. A, B change indicator remote controller

When the remote controller switching function is
set, “B” appears in the remote controller display.
(When the remote controller setting is “A”, there is
no indication at this position.)

11

10

10. Comfort sleep

Indicates when comfort sleep is activaled.
Press comfort sleep bu

9

15

1

2

13

11. Quiet

Indicates when quiet is activated.
Press quiet button to start and press it again to stop
operation.

tton to selectter

12. One-Touch

Indicates when one touch comfort is activated.
Press one-touch button to start the operation.

13. Swing

Indicates when louver is swing.
Press swing button to start the swing operation
and press it again to stop the swing operation.

8

6

3

7

4

5

− 15 −

FILE NO. SVM-07023

7-2. Outline of Air Conditioner Control

This is a fixed capacity type air conditioner, which uses
a AC motor for an indoor fan. The AC motor drive
circuit is mounted in the indoor unit. And electrical
parts which operate the compressor and the outdoor
fan motor, are mounted in the outdoor unit.
The air conditioner is mainly controlled by the indoor
unit controller. The controller operates the indoor fan
motor based upon commands transmitted by the
remote control and transfers the operation commands
to the outdoor unit controller.
The outdoor unit receives operation commands from
the indoor unit, and operates the outdoor fan motor
and the compressor.

(1) Role of indoor unit controller

The indoor unit controller receives the operation
commands from the remote control and executes
them.

• Temperature measurement at the air inlet of the

indoor heat exchanger by the indoor
temperature sensor

• Temperature measurement of the indoor heat

exchanger by the heat exchanger sensor

• Louver motor control

• Indoor fan motor operation control

• LED display control

• Transferring of operation commands to the

outdoor unit

• Receiving of information of the operation status

and judging of the information or indication of
error

(2) Role of outdoor unit controller

The outdoor unit controller receives the operation
commands from the indoor controller and
executes them.

• Compressor operation

control

• Operation control of

outdoor fan motor

Operations according

to the commands
from the indoor unit

• Turning off the compressor and outdoor fan

when the outdoor unit receives the shutdown
command

• Defrost control in heating operation

(Temperature measurement by the indoor heat
exchanger and control for the four-way valve
and the outdoor fan motor) *Heat pump Model
only

7-2-1. Louver control

(1) Vertical air flow louver

Position of veritcal air flow louver is automatically
controlled according to the operation mode.
Besides, position of vertical air flow louver can be
arbitrarily set by pressing [FIX] button.
The louver position which is set by [FIX] button is
stored in the microcomputer, and the louver is
automatically set at the stored position for the next
operation.

(2) Swing

If [SWING] button is pressed when the indoor unit
is in operation, the vertical air flow louver starts
swinging. When [FIX] button is pressed, it stops
swinging.

7-2-2. Indoor Fan Control

The operation controls the fan speed at indoor unit
side. The indoor fan (cross flow fan) is operated by
the phase control induction motor. The fan rotates in 5
stages in MANUAL model, and in 5 stages in AUTO
mode, respectively. (Table 7-2-1)

1) When setting the fan speed to L, L+, M, M+ or H
on the remote controller, the operation is performed
with the constant speed shown in Fig. 7-2-1 and

Fig 7-2-2

Fig (7-2-1) Cooling Fig (7-2-2) Heating

Indication

L
L+

M
M+

H

Fan speed

W6

(L + M) / 2

W9

(M + H) / 2

WC

Indication

L
L+

M
M+

H

Fan speed

(L + M) / 2

(M + H) / 2

W8

WA

WE

Table 7-2-1 Indoor fan and air flow rate

Fan speed level

OPERATION

MODE

RAS-07SKHP-E

Model

RAS-10SKHP-E

Cool
Heat
Dry
fan speed (rpm)
Air flow (m
fan speed (rpm)
Air flow (m3/h)

3

/h)

2) When setting the fan speed to AUTO on the remote
controller, revolution of the fan motor is controlled
to the fan speed level shown in Table 1 according to
the setup temperature, room temperature, and heat
exchanger temperature.

WF WE WD WC WB WA W9 W8 W7 W6 W5 W4 W3 W2 W1

UH H M+ M L+ L L- UL SUL

UH H M+ M+ L+ L L- UL SUL

UH H M+ M L+ L L- UL SUL

1300 1300 1300 1300 1250 1150 1100 950 950 900 800 750 700 650 500

540 540 540 540 510 470 440 370

1350 1350 1350 1300 1250 1180 1140 1000 980 980 900 800 750 700 550

560 560 560 540 510 500 460 400

370 350 300 270 250 220 150

390 390 350 300 270 250 180

− 16 −

FILE NO. SVM-07023

7-3. Description of Operation Mode

(1) When turning on the breaker, the operation lamp

blinks. This means that the power is on (or the
power supply is cut off.)

(2) When pressing [ ] button on the

remote control, receiving beep sounds from the
indoor unit, and the next operation is performed
together with opening the vertical air flow louver.

(3) Once the operation mode is set, it is memorized in

the microcomputer so that the previous operation
can be effected thereafter simply by pressing
[ ] button.

7-3-1. Fan only operation

([MODE] button on the remote control is set
to the fan only operation.)

(1) When [FAN] button is set to AUTO, the indoor fan

motor operates as shown in Fig. 7-3-3. When
[FAN] button is set to LOW, LOW+, MED, MED+ or
HIGH, the motor operates with a constant air flow.

°C

7-3-2. Cooling operation

([MODE] button on the remote control is set
to the cooling operation.)

(1) The compressor, 4-way valve, outdoor fan and

operation display lamp are controlled as shown in
Fig. 7-3-4.

° C



ON ON

OFF OFF OFF ON

4-way valve

Compressor

Outdoor fan

(Room temp.) (Preset temp.)

Preset
temp.

0.5

0

Fig. 7-3-4

display lamp

OPERATION

(Room temp.) − (Preset temp.)

Preset
temp.

+3
+2.5
+2

+1.5
+1
+0.5
0

(Preset temp.: 24 °C)

M+

NOTE1 : *1 : Fan speed = (M + − L) x 3/4 + L

*2 : Fan speed = (M + − L) x 2/4 + L
*3 : Fan speed = (M + − L) x 1/4 + L

(Linear approximation
from M+ and L)

NOTE2 : The Hi Power, ECO and COMFORT SLEEP

operation can not be set

Fig. 7-3-3 Setting of air flow [FAN:AUTO]

(2) When [FAN] button is set to AUTO, the indoor fan

motor operates as shown in Fig. 7-3-5. When

*1
*2
*3

[FAN] button is set to LOW, LOW+, MED, MED+ or
HIGH, the motor operates with a constant air flow.

°C

(Room temp.) − (Preset temp.)

Preset
temp.

+3
+2.5
+2
+1.5
+1
+0.5

0

-0.5

M+

*1
*2
*3

NOTE1 : *1 : Fan speed = (M + − L) x 3/4 + L

*2 : Fan speed = (M + − L) x 2/4 + L
*3 : Fan speed = (M + − L) x 1/4 + L

(Linear approximation
from M+ and L)

Fig. 7-3-5 Setting of air flow [FAN:AUTO]

− 17 −

FILE NO. SVM-07023

7-3-3. Dry operation

([MODE] button on the remote control is set
to the dry operation.)

(1) The compressor, 4-way valve, outdoor fan and

operation display lamp are controlled as shown in
Fig. 7-3-6.

° C

ON:6min.

OFF:4min.

ON

ON:5min.

OFF:5min.

OFF

4-way valve

Outdoor fan

(Room temp.) (Preset temp.)

Preset
temp.

+3

+2

+1

ON:6min.

OFF:4min.

OFF

ON:5min.

OFF:5min.

OFF

0

Compressor

Fig. 7-3-6

7-3-4. Heating operation

(1) The compressor, 4-way valve, outdoor fan and

Preset
temp.

display lamp

OPERATION

([MODE] button on the remote control is set
to the heating operation.)

operation display lamp are controlled as shown in
Fig. 7-3-8.

° C

0

0.5

(Room temp.) (Preset temp.)

ON

OFF

ON

Compressor

ON

OFF

ON

4-way valve

Outdoor fan

OPERATION

display lamp

Fig. 7-3-8

(2) The microprocessor turns the compressor on and

off at the regular intervals (4 to 6 minutes). While
the compressor is turning off, the indoor fan motor
operates in the SUPER LOW position.
The pattern of operation depending on the relation
between room temperature and preset
temperatures is shown in Fig. 7-3-7.

Room temp.

Preset temp.+1

Preset temp.

Compressor

Outdoor fan

Indoor fan

ON ON ON ON

OFF OFF OFF

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

*Super Low

Fig. 7-3-7

(3) [FAN] button on the remote control is set to AUTO

only.

(4) The ECO and Hi Power operations can not be set.

(2) When [FAN] button is set to AUTO, the indoor fan

motor operates as shown in Fig. 7-3-9. When
[FAN] button is set to LOW, LOW+, MED, MED+ or
HIGH, the motor operates with a constant air flow.

Preset
temp.

°C

0

-0.5

-1

-1.5

-2

-5.0

-5.5

[FAN AUTO]

(Room temp.) − (Preset temp.)

L

*1
*2

+

M

H

*1 : Fan speed = (M + − L) x 1/4 + L

*2 : Fan speed = (M + − L) x 2/4 + L
*3 : Fan speed = (M + − L) x 3/4 + L

(Calculated with inear approximation from M+ and L+)

Fig. 7-3-9

− 18 −

y.

c

e

)

U

.

)

c

U

g

y

g

FILE NO. SVM-07023

(3) The indoor heat exchanger restricts revolving

speed of the fan motor to prevent a cold draft. The
upper limit of the revolving speed is shown in
Fig. 7-3-10 and Table 7-3-2.

T
46 46
45 45 33

33 33 21
32 32 20

*A+4 *A+4 *A+4

*A-4 *A-4 *A-4

* No limitation while fan speed MANUAL mode is in stabilit
* A: When Tsc 24, A is 24, and when Tsc < 24, A is Ts

Tsc: Set valu

34

Fan speed MAN
Fan speed AUTO in stabilit
Fan speed AUTO in startin

H (WE

Line-approximate
H and S

SUL (W2

L with Tc

Stop

AL in startin

Fig. 7-3-10 Cold draft preventing control

7-3-5. Automatic operation

([MODE] button on the remote control is set
to the automatic operation.)

(1) One of 3 operations (Cooling, Fan only or Heating)

is selected according to difference between the
preset temperature and the room temperature at
which the automatic operation has started, as
shown in Fig. 7-3-11. The Fan only operation
continues until the room temperature reaches a
level at which another mode is selected.

(2) Temporary Auto

When the RESET button on the indoor unit
is pushed, the preset temperature is fixed at 24°C
and the indoor unit is controlled as shown in
Fig. 7-3-11.

°C

Cooling operation

0

Table 7-3-2

Fan *5 *6
speed Starting period Stabilized period

AUTO • Up until 12 minutes

passed after starting
the unit

• From 12 to 25 minutes
passed after starting
the unit and room
temperature is 3°C
lower than preset
temperature

Manual • Room temperature
(L – H) < Preset temperature

• From 12 to 25 minutes
passed after starting
the unit and room
temperature is
between preset
temperature and 3°C
lower than preset
temperature

• 25 minutes or more
passed after starting
the unit

• Room temperature

Preset temperature

–4°C

–3.5°C

Fan only operation

-1

Heating operation

(Room temp.) − (Preset temp.)

Fig. 7-3-11

−19 −

FILE NO. SVM-07023

7-4. High-Temperature Limit Control

The microcontroller detects the indoor heat exchanger
temperature to prevent pressure of a refrigerating cycle
from increasing excessively.
The compressor and outdoor fan motor are controlled
as shown in Fig. 7-4-1.

Compressor

OFF

ON

ON

Outdoor fan

OFF

OFF

ON

Heat exchanger
temp.

(°C)
60

53
52

Fig. 7-4-1

7-5. Low-Temperature Limit Control

The microcontroller detects the indoor heat exchanger
temperature to prevent the indoor heat exchanger from
freezing.
The compressor and outdoor fan motor are controlled
as shown in Fig. 7-5-1 and 7-5-2.

7-6. Defrost Operation

During the heating operation, the outdoor heat
exchanger temperature goes down and sometimes it is
frozen.
In this case, the air conditioner stops the heating
operation and starts the defrost operation to melt ice.

7-6-1. Condition to start the defrost operation

The defrost operation starts whichever below
conditions are satisfied.

(1) When the cumulative compressor operating time is

longer than 40 or 90 minutes and difference
between the indoor heat exchanger temperature
and the room temperature is less than the
specified value. (This value is decided by the
microprocessor.) (Control example is shown in
Fig. 7-6-1. In case of B or C, the defrost operation
starts.)

(2) When the current limit control or the high

temperature limit control is performed for total of
90 minutes.

RAS-07SKHP-E
RAS-10SKHP-E

Heat exchanger
temperature

(°C)

5

2

Compressor Outdoor fan

Fig. 7-5-1

ON

Less than 2°C continues

for 5 minutes

OFF

D

xchanger temp

A

Indoor heat e

- Room temp

Fig. 7-6-1 (Indoor fan speed : M)

7-6-2. Defrost operation time control

<In case of B>

(1) The heating operation is performed for at least

40 minutes.

(2) The maximum defrost operating time is 6 minutes.

The defrost operating time for the 4th cycle is

10 minutes. (When the outdoor temperature is
very low, however, the defrost operating time is
10 minutes.)

B

C

Cumulative
compressor
operating time

− 20 −

FILE NO. SVM-07023

minutes

40

Heating

minutes

40

Defrost

Heating

Max 6 minutes

minutes

40

Defrost

1 cycle

Heating

10 minutes

minutes

40

Defrost

Heating

Defrost

Fig. 7-6-2

<In case of C>

(1) The heating operation is performed for at least 90

minutes.

(2) The defrost operating time is 10 minutes.

7-6-3. Ending condition at defrost operation

(1) When the compressor current becomes 8.0A or

more during defrost operation, the defrost
operation stops and the heating operation restarts.
(The current sensor detects the compressor
current.)

(2) The defrost operation continues for at most

6 minutes or 10 minutes.

DEFROST LAMP :

·

During defrost operation, the PRE-DEF. lamp is
on and the indoor and outdoor fans are off.

·

The compressor start protection timer is inter­looked with the PRE-DEF. lamp. So the PRE-DEF.
Lamp is off (the fans stop) for about 3 minutes
after the [ START ] button is turned on. When
the compressor is turned on, the PRE-DEF. lamp
comes on. After the heat ex-changer is preheated
to about 24
goes off, and the indoor fan starts.

°C or higher

, the PRE-DEF. Lamp

− 21 −

7-7. Current Limit Control

The microcontroller detects the input current so as to
prevent it exceeds a specified value by means of
controlling the outdoor fan control as described in (1)
and (2).

(1) Current limit control (Cooling operation)

Control is performed as shown below by detecting
the compressor operating current with a current
sensor (C.T).

Input current

15.0A I4

14.0A I3

FILE NO. SVM-07023

Compressor Outdoor fan
More than I4 continues for 3 seconds

OFF

More than I3 continues for 5 minutes

OFF

ON

Fig. 7-7-1

(2) Current limit control (Heating operation)

Control is performed as shown in Fig. 7-7-2

Input current

Compressor Outdoor fan

More than I4 continues for 3 seconds

15.0A I4

14.0A I3

9.0A I2

8.0A I1

More than I3 continues for 5 minutes

ON OFF

OFF

OFF

ON

Fig. 7-7-2

Remark :

1. This function is available only for heat pump model (Cooling models have no a current sensor (C.T.)).

− 22 −

FILE NO. SVM-07023

7-8. One-Touch Comfort

One touch comfort is the fully automated operation that is set according to the preferable comdition in a
region.

Fan
Operation

AUTO

*AUTO/L L

0

*AUTO/L : Fan operates depends on the setting temperature and room temperature.

During the One Touch Comfort mode if the indoor unit receives any signal with other operation mode, the unit
will cancel the comfort mode and operates according to the signal received.

Operation description

When an indoor unit receives "One Touch Comfort Signal" from the remote controller, the indoor unit operates
as following.

1) Air conditioner starts to operation when the signal is received, even if the air conditioner was OFF.

2) Operation mode is set according to room temperature, the same as AUTO mode.

3) Target temperature is 24ºC.

4) Louver position is set as stored position.

5) Fan is controlled as diagram.

12

25

Time after operation
starts (min)

− 23 −

FILE NO. SVM-07023

7-9. Hi POWER Mode

([Hi POWER] button on the remote

control is pressed.)

When [Hi POWER] button is pressed while the indoor
unit is in Auto, Cooling or Heating operation, Hi
POWER mark is indicated on the display of the remote
control and the unit operates as follows.

(1) Automatic operation

The indoor unit operates in according to the

·

current operation.

(2) Cooling operation

• The setting temperature drops 3°C.
(The value of the setting temperature on the
remote control does not change.)

• If the room temperature is higher than the
setting temperature by 3.5°C or more, the
horizontal louver moves to the Hi POWER
position automatically. Then when the room
temperature is 1°C less than the setting
temperature the horizontal louver returns
automatically.

• FAN speed : [AUTO]
If the room temperature is higher than the
setting temperature by 3.5°C or more, the air
conditioner operates at maximum airflow level.
If the room temperature is higher than the
setting temperature by less than 3.5°C, the air
conditioner operates at normal airflow level.

• FAN speed : One of 5 levels
If the room temperature is higher than the
setting temperature by 3.5°C or more, the air
conditioner operates at higher consecutive
airflow level. If the room temperature is higher
than the setting temperature by less than 3.5°C,
the air conditioner operates at normal airflow
level.

The indoor unit's fan speed level increase 1 tap

·

7-10. QUIET mode

When the [QUIET] button is pressed, the fan of the
indoor unit will be restricted the revolving speed at
speed L− until the [OUIET] button is pressed once
again (cancel Quiet mode).

Quiet mode is the system which, control the revolving

speed of indoor fan to work constantly at lower than
speed L. In addition, noise level of indoor unit is less

than usual.

Remarks :

1. Quiet mode is unable to work in dry mode.

2. Quiet mode is appropriate to work with less cooling
load and less heating load condition. Because of the
fan speed L− may cause not enough the cooling

capacity or heating capacity.



7-11. ECO Operation

Cooling operation

·

The preset temperature will increase 1ºC after the
ECO mode has operated for 1 hour and the temperature

will increase another 1ºC after the ECO mode has
operated for 2 hour. (the value of the preset temperature
on the remote control does not change.)

·

The indoor fan speed is depend on presetting and can
change every speed after setting ECO operation.

Heating operation

·

The preset temperature will drop down 1ºC after the
ECO mode has operated for 1 hour and the temperature
will drop down another 1ºC after the ECO mode has
operated for 2 hour. (the value of the preset temperature
on the remote control does not change.)

·

The indoor fan speed is depend on presetting and can
change every speed after setting ECO operation.

(3) Heating operation

The preset temperature increases 2°C,

·

(The value of the preset temperature on the
remote control does not change.)
The indoor unit operates in normal heating

·

mode except the preset temperature is higher
(+2°C).

The indoor unit's fan speed level increase 1 tap

·

(4) The Hi POWER mode can not be set in Dry or Fan

only operation.

(5) The Hi POWER mode can memorize with timer

function.



− 24 −

7-12. COMFORT SLEEP mode

Cooling operation

·

The preset temperature will increase 1ºC after the comfort
sleep mode has operated for 1 hour and the temperature
will increase another 1ºC after the comfort sleep mode
has operated for 2 hour. (the value of the preset temper­rature on the remote control does not change)

·

Press the [COMFORT SLEEP] button to choose the
operating hours. Repeat pressing to select the hours.
(1hr, 3hr, 5hr or 9hr)

·

If the [COMFORT SLEEP] button is pressed again means
cancel comfort sleep mode.

Heating operation

·

The preset temperature will drop down 1ºC after the
comfort sleep mode has operated for 1 hour and

the temperature will decrease another 1ºC after
the comfort sleep mode has operated for 2 hour.
(The value of the preset temperature on the remote

control does not change.)

·

Press the [COMFORT SLEEP] button to choose

the operating hours. Repeat pressing to setect
thehours. (1hr, 3hr, 5hr or 9hr)

FILE NO. SVM-07023

·

If the [COMFORT SLEEP] button is pressed again
means cancel comfort sleep mode.

The principles of comfort sleep mode are:

·

Quietness for more comfortable. When room

temperature reach setting temperature.

·

Save energy by changing room temperature

automatically.

·

The air condition can shut down by itself auto-

matically.

Remarks :

1. Comfort sleep mode will not operate in dry mode
and fan only mode.

− 25 −

FILE NO. SVM-07023

7-13. Auto Restart Function

This indoor unit is equipped with an automatic restarting function which allows the unit to restart operating with
the set operating conditions in the ev ent of a power supply being accidentally shut down.
The operation will resume without warning three minutes after power is restored.

This function is not set to work when shipped from the factory. Therefore it is necessary to set it to work.

7-13-1. How to Set the Auto Restart Function

To set the auto restart function, proceed as f ollows:
The power supply to the unit must be on ; the function will not set if the power is off.
Press the [RESET] button located in the center of the front panel continuously f or three seconds.
The unit receives the signal and beeps three times.
The unit then restarts operating automatically in the event of power supply being accidentally shut down.

• When the unit is standby (Not operating)

Operation

Press [RESET] button for more than
three seconds. (Less than 10 seconds)

RESET button

• When the unit is in operation

Operation

Press [RESET] button for more than
three seconds. (Less than 10 seconds)

Motions

The unit is on standby.

↓

The unit starts to operate. The green indicator is on.

↓ After approx. three seconds,

The unit beeps three times The green indicator blinks
and continues to operate. for 5 seconds.

If the unit is not required to operate at this time, press [RESET]
button once more or use the remote controller to turn it off.

Motions

The unit is in operation. The green indicator is on.

↓

The unit stops operating. The green indicator is turned off.

↓ After approx. three seconds,

The unit beeps three times. The green indicator blinks

for 5 seconds.

If the unit is required to operate at this time, press [RESET] button
once more or use the remote controller to turn it on.

RESET button

• While the filter check indicator is on, the RESET button has the function of filter reset betton.

− 26 −

FILE NO. SVM-07023

7-13-2. How to Cancel the Auto Restart Function

To cancel auto restart function, proceed as f o llows :
Repeat the setting procedure : the unit receives the signal and beeps three times.
The unit will be required to be turned on with the remote controller after the main power supply is turned off.

• When the system is on stand-by (not operating)

Operation

Press [RESET] button for more than
three seconds. (Less than 10 seconds)

RESET button

• When the system is operating

Operation

Press [RESET] button for more than
three seconds. (Less than 10 seconds)

Motions

The unit is on standby.

↓

The unit starts to operate. The green indicator is on.

↓ After approx. three seconds,
The unit beeps three times and continues to operate.
If the unit is not required to operate at this time, press [RESET]

button once more or use the remote controller to turn it off.

Motions

The unit is in operation. The green indicator is on.

↓

The unit stops operating. The green indicator is turned off.

↓ After approx. three seconds,
The unit beeps three times.
If the unit is required to operate at this time, press [RESET] button

once more or use the remote controller to turn it on.

RESET button

7-13-3. Power Failure During Timer Operation

When the unit is turned off because of power failure
during timer operation, the timer operation is can­celled. In that case, set the timer operation again.

NOTE :

The Everyday Timer is reset while a command signal
can be received from the remote controller even if it
stopped due to a power failure .

− 27 −

FILE NO. SVM-07023

7-14. Self-Cleaning function

Unit now performing cooling or dry operation

Press “STOP” button

Only timer indicator lights, and Self Cleaning operation starts

Time set now elapses

Operation stops

• During Self-Cleaning operations: The louver opens
slightly. The indoor fan operates continuously at
a speed of SL rpm.

1. Purpose

The Self-Cleaning operation is to minimize the growth of mold,
bacteria etc. by running the fan and drying so as to keep
the inside of the air conditioner clean.

Self-Cleaning operation

When the cooling or dry operation shuts down, the unit
automatically starts the Self- Cleaning operation which is
then performed for the specified period based on duration

of the operation which was performed prior to the shutdown,

after which the Self-Cleaning operation stops.
(The Self-Cleaning operation is not performed after a
heating operation.)

2. Operation

1) When the stop signal from the remote controller or
timer-off function is received, only the timer indicator
light.

2) The period of the Self-Cleaning operation is determined
by the duration of the operation performed prior to
the reception of the stop code.

3) After the Self-Cleaning operation has been performed
for the specified period, the unit stops operation.

Self-Cleaning operation times

Operation time

Up to 10 minutes

Cooling: Auto (cooling) Dry

Heating: Auto (heating)
Auto (fan only)
Shutdown

• To stop an ongoing Self-Cleaning operation at any time
Press the start/stop button on the remote controller twice during the Self-Cleaning
operation. (After pressing the button for the first time, press it for the

second time without delay (within 10 minutes).)

10 minutes
or longer

No Self-Cleaning operation performed

Self-Cleaning operation time

No Self-Cleaning operation

performed (0 minutes)

20 mins.

− 28 −

FILE NO. SVM-07023

7-14-1. Self-Cleaning diagram

Operation display ON OFF OFF

FCU fan

FCU louver OPEN OPEN (12.7º) CLOSE

Timer display

Compressor

CDU fan ON or OFF

rpm is depend on presetting. (SL)

depend on presetting of timer function. depend on presetting of timer function.

depend on presetting per room temperature.

depend on presetting per room temperature.

Cool mode or dry mode

operation more than 10 mins.

ON ON

ON or OFF

ON or OFF

Turn off by remote controller or

timer-off function.

ON

OFF OFF

OFF OFF

Self-Cleaning mode

operate 20 mins.

Automatically turn-off.

7-14-2. Self-Cleaning function release

How to cencel Self-Cleaning function

To cancel the Self-Cleaning function,
proceed as follows :

How to cencel Self-Cleaning function

To cancel the Self-Cleaning function, proceed as
follows:

• Press [RESET] button one time or use remote

control to turn on air conditioner. Display will show

in green color.

• Hold down the [RESET] button for more than
20 seconds. (The air conditioner will stop suddenly
when the [RESET] is pressed but keep holding it

continue. The will beep 3 times in the first

3 seconds but it is not related to Self-Cleaning

function)

• After holding about 20 seconds, the air conditioner

will beep 5 times without any blinking of display.

• The Self-Cleaning Operation had been cancelled.

Remark

Presetting of Self-Cleaning function above, AUTO­RESTART function had been cancelled. To set

AUTO-RESTART again.

How to set Self-Cleaning function

To set the Self-Cleaning function, proceed as follows.

• Press [RESET] button one time or use remote

control to turn on air conditioner. Display will show
in green color.

• Hold down the [RESET] button for more than

20 seconds. (The air conditioner will stop suddenly
when the [RESET] is pressed but keep holding it
continue. Then will beep 3 times is the first 3
seconds but it is not related to Self-Cleaning

function)

• After holding about 20 seconds, the air conditioner

will beep 5 times and OPERATION display blinks

5 times.

• The Self-Cleaning function had been set.

Remark

Presetting of Self-Cleaning function above, AUTO­RESTART function had been cancelled. To set

AUTO-RESTART again.

OFF

ON or OFF

Operation time

− 29 −

RESET button

FILE NO. SVM-07023

8. INSTALLATION PROCEDURE

8-1. Safety Cautions

For general public use

Power supply cord of parts of appliance for Outdoor use shall be at least polychloroprene sheathed flexible
cord (design H07 RN-F), or cord designation 245 IEC66.

CAUTION

This appliance must be connected to the main power supply 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.

To Disconnect the Appliance from the Main Power Supply

DANGER

• FOR USE BY QUALIFIED PERSONS ONLY.

• TURN OFF MAIN POWER SUPPLY BEFORE ATTEMPTING ANY ELECTRICAL WORK. MAKE SURE

ALL POWER SWITCHES ARE OFF. FAILURE TO DO SO MAY CAUSE ELECTRIC SHOCK.

• CONNECT THE CONNECTING CABLE CORRECTLY. IF THE CONNECTING CABLE IS CONNECTED

WRONGLY, ELECTRIC PARTS MAY BE DAMAGED.

• CHECK THE EARTH WIRE THAT IT IS NOT BROKEN OR DISCONNECTED BEFORE INSTALLATION.

• DO NOT INSTALL NEAR CONCENTRATIONS OF COMBUSTIBLE GAS OR 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 2 M) FROM HEAT SOURCES SUCH AS RADIATORS, HEATORS,
FURNACE, STOVES, ETC.

• WHEN MOVING THE AIR-CONDITIONER FOR INSTALLING IT IN ANOTHER PLACE AGAIN, BE VERY

CAREFUL NOT TO GET THE SPECIFIED REFRIGERANT (R410A) WITH ANY OTHER GASEOUS
BODY INTO THE REFRIGERATION CYCLE. IF AIR OR ANY OTHER GAS IS MIXED IN THE
REFRIGERANT, THE GAS PRESSURE IN THE REFRIGERATION CYCLE BECOMES ABNORMALLY
HIGH AND IT RESULTINGLY CAUSES BURST OF THE PIPE AND INJURIES ON PERSONS.

• IN THE EVENT THAT THE REFRIGERANT GAS LEAKS OUT OF THE PIPE DURING THE

INSTALLATION WORK, IMMEDIATELY LET FRESH AIR INTO THE ROOM. IF THE REFRIGERANT GAS
IS HEATED BY FIRE OR SOMETHING ELSE, IT CAUSES GENERATION OF POISONOUS GAS.

WARNING

• Never modify this unit by removing any of the safety guards or bypassing 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.

Also, make sure the equipment is properly earthed.

• Appliance shall be installed in accordance with national wiring regulations.

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 could result in electric shock.

Do not store it 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 neighbors.

• To avoid personal injury, be careful when handling parts with sharp edges.

• Please read this installation manual carefully before installing the unit. It contains further important

instructions for proper installation.

 − 30− 

FILE NO. SVM-07023

REQUIREMENT OF REPORT TO THE LOCAL POWER SUPPLIER

Please make absolutely sure that the installation of this appliance is reported to the local power supplier
before installation. If you experience any problems, or if the installation is not accepted by the supplier, the
service agency will take adequate countermeasures.

Remark per EMC Directive 89/336/EEC

To prevent flicker impressions during the start of the compressor (technical process) following installation
conditions do apply.

1. The power connection for the air conditioner has to be done at the main power distribution. This distribution

has to be of an impedance.
Normally the required impedance is reached at a 32A fusing point. Air conditioner fuse has to be 16A max.!

2. No other equipment should be connected to this power line.

3. For detailed installation acceptance, please contact your power supplier whether its restriction does apply

for products like washing machines, air conditioners or electrical ovens.

4. For power details of the air conditioner, refer to the rating plate of the product.

 − 31 − 

8-2. Installation Diagram of Indoor and Outdoor Units

FILE NO. SVM-07023

(Attach to the front panel.)

Super Oxi

5

Deo filter

2 Wireless remote control

120 mm or more

Air filter

Super Sterilizer

6

filter

8 Pan head

wood screw

Hook

47 mm or more

Hook

4 Remote control holder

Vinyl tape
Apply after carrying
out a drainage test.

1 Installation plate

120 mm or more

Shield pipe

For the rear left and left piping

Wall

Insert the cushion between
the indoor unit and wall, and
tilt the indoor unit for better
operation.

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 to the left, rear left,
rear right, bottom right or
bottom left.

Rear
right

Bottom right

Rear
left

Left

Bottom left

Before installing the
wireless remote control

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

Wireless remote control

2

A
C

L

Batteries

3

100 mm or more

400 mm or more

45 mm or more

600 mm or more

Saddle

Extension drain hose

(Not available, provided
by installer)

600 mm or more

Insulate the refrigerant pipes
separately with insulation, not
together.

6 mm thick heat resisting
polyethylene foam

 –32 –

8-3. Installation

8-3-1. Optional installation parts

FILE NO. SVM-07023

Part

Code

Parts name

Refrigerant piping

A

Liquid side : 6.35 mm
Gas side : 9.52 mm

Pipe insulating material

B

(polyethylene foam, 6 mm thick)

C

Putty, PVC tapes

Æ
Æ

<Fixing bolt arrangement of outdoor unit>

07 Class

500 mm

Air inlet

Drain outlet

280 mm

97 mm

53 mm

Air outlet

Q'ty

One

each

1

One

each

320 mm

7 mm

33 mm

10 Class

86 mm

Air outlet

600 mm

125 mm108 mm

30

Æ

Air inlet

102 mm

90 mm

Drain outlet

Fig. 8-3-1

·

Secure the outdoor unit with fixing bolts and nuts if the unit is likely to be exposed to a strong wind.
Use 8 mm or 10 mm anchor bolts and nuts.

·

·

Æ

If it is necessary to drain the defrost water, attach drain nipple

Æ

9

and cap w

ater proof

10

to the bottom

plate of the outdoor unit before installing it.

– 33 –

8-3-2. Accessory and installation parts

FILE NO. SVM-07023

Part

No.

Part name (Q’ty)

1

Installation plate x 1

2

Wireless remote control x 1

3

Battery x 2

Others

Owner’s manual

Installation manual

Name

Part

No.

Part name (Q’ty)

4

Remote control holder x 1

5

Super Oxi Deo filter x 1

6

Super Sterilizer filter x 1

Part

No.

Part name (Q’ty)

7

Mounting screw ∅4 x 25 s x 6

8

Pan head wood screw

∅

3.1 x 16 s x 2

9

Drain nipple* x 1

!

Cap water proof x 2

(For 10k model only)

The part marked with asterisk (
outdoor unit.

(For Heat pump model only)

*) is packaged with the

− 34 −

FILE NO. SVM-07023-1

35

65

55.5

120

8-4. Indoor Unit

8-4-1. Installation place

• A place which provides the spaces around the

indoor unit as shown in the above diagram.

• A place where there is no obstacle near the air inlet

and outlet.

• A place that allows 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’s wireless

receiver should be avoided.

• The microprocessor in the indoor unit should not

be too close to RF noise sources.
(For details, see the owner’s manual.)

<Remote control>

• A place where there are no obstacles such as a

curtain that may block the signal from the indoor
unit.

• 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.

8-4-2. Cutting a hole and mounting installation

plate

<Cutting a hole>

When installing the refrigerant pipes from the rear.

90 mm
66 mm

Pipe hole

65 m

m

42 mm

Fig. 8-4-2

1. After determining the pipe hole position on the
mounting plate (A), drill the pipe hole (∅65 mm) at
a slight downward slant to the outdoor side.

NOTE

• When drilling a wall that contains a metal lath, wire
lath or metal plate, be sure to use a pipe hole brim
ring sold separately.

<Mounting the installation plate>

Thread

Hook

Weight

Hook

Pipe hole

7 Mounting screw

1

Installation
plate

ndoor unit

I

(Side view)

°

75

Reception
range

Remote
control

(Top view)

Indoor unit

Reception
range

Fig. 8-4-1

45

°

45

°

Remote control

Pipe hole

Indoor unit

Hook

Fig. 8-4-3

− 35−

FILE NO. SVM-07023

<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. To mount the installation plate on a concrete wall
with anchor bolts, utilize the anchor bolt holes as
illustrated in the above figure.

3. Install the installation plate horizontally in the wall.

CAUTION

When installing the installation plate with a
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
<Keep horizontal direction>

Anchor
bolt

Projection

5 mm dia. hole

15 mm or less

8-4-3. 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

• 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 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

• Ensure all wiring is used within its electrical rating.

77

7 Mounting

77

screw

ss

∅4 x 25

s

ss

Clip anchor
(local parts)

Fig. 8-4-4

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 5 mm dia. holes in the wall.

• Insert clip anchors for appropriate 7 mounting
screws.

NOTE

• Secure four corners and lower parts of the
installation plate with 4 to 6 mounting screws to
install it.

Model 07 Class

Power source 50Hz, 220

Maximum
running current

Plug socket &
fuse rating

Power cord 1 mm2or more

-

240 V Single phase

5A 7.5A

16A

10 Class

− 36 −

<How to connect the connecting cable>

FILE NO. SVM-07023

Wiring of the connecting cable can be carried out
without removing the front panel.

1. Remove the air inlet grille.
Open the air inlet grille upward and pull it toward
you.

2. Remove the terminal cover and cord clamp.

3. Insert the connecting cable (according to the local
cords) into the pipe hole on the wall.

4. Take out the connecting cable through the cable
slot on the rear panel so that it protrudes about
15 cm from the front.

5. Insert the connecting cable fully into the terminal
block and secure it tightly with screws.

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, rear plate bushing and air
inlet grille on the indoor unit.

CAUTION

• Be sure to refer to the wiring system diagram

labeled inside the front panel.

• Check local electrical cords and also any specific

wiring instructions or limitations.

Terminal cover

Connecting cable

about 15 cm

Stripping length of the connecting cable

Screw

Cord clamp

Screw

Fig. 8-4-5

80 mm

10 mm

10 mm

70 mm

10 mm

50 mm

Terminal block

1

3

2

Earth

1

2

4

Earth line

Connecting cable

3 4

Fig. 8-4-6

NOTE

• Use stranded wire only.

• Wire type : H07 RN-F or more

<How to install the air inlet grille on the indoor unit>

• When attaching the air inlet grille, the contrary of

the removed operation is performed.

Fig. 8-4-7

− 37 −

FILE NO. SVM-07023

8-4-4. Piping and drain hose installation
<Piping and drain hose forming>

* Since dewing results in a machine trouble, make

sure to insulate both the connecting pipes. (Use
polyethylene foam as insulating material.)

Rear right

Rear left

Bottom left

Changing

Left

Bottom right

Right

Die-cutting

Front panel slit

drain hose

Piping preparation

1. Die-cutting Front panel slit

For leftward connection, cut out slit on the left side of
the front panel. (A knife will produce splinters, so use
nippers.)

2. Changing drain hose

For leftward connection, bottom leftward connection
and rear leftward connection’s piping, it is necessary to
change the drain hose and drain cap.

How to remove the drains cap

Clip drain cap by needle-nose plier, and pull out.

How to fix the drains cap

1) Insert hexagonal wrench (4 mm) in a center
head.

4 mm

Fig. 8-4-12

2) Firmly insert drains cap.

No gap

Do not apply lubricating oil
(refrigerant machine oil) when
inserting the drain cap.
Application causes deterioration

Insert a hexagon
wrench (4 mm)

and drain leakage of the plug.

Fig. 8-4-13

CAUTION

Firmly insert the drain hose and drain cap; otherwise,
water may leak.

<In case of right or left piping>

Fig. 8-4-10

How to install the drain hose

Firmly insert drain hose connecting part until hitting on
a heat insulator.

Heat insulator

Drain hose

Fig. 8-4-11

• After scribing slits of the front panel with a knife or a
making-off pin, cut them with a pair of nippers or an
equivalent tool.

Slit

Fig. 8-4-14

<In case of bottom right or bottom left piping>

• After scribing slits of the front panel with a knife or a
making-off pin, cut them with a pair of nippers or an
equivalent tool.

Slit

− 38 −

Fig. 8-4-15

FILE NO. SVM-07023

<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 a spring bender so
as not to crush the pipe.

Bend the connection pipe within a radius of 30 mm.

To connect the pipe after installation of the unit (figure)

(To the forefront of flare)

210 mm

165 mm

R 30 mm (Use polisin (polyethylene)

43 mm

core or the like for bending pipe.)

80

Gas side

Liquid side

Outward form of indoor unit

Use the handle of screwdriver, etc.

Fig. 8-4-16

8-4-5. Indoor unit fixing

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 pressing the indoor unit onto the wall, hook it
at the lower part on the installation plate. Pull the
indoor unit toward you to confirm that it is firmly
hooked up on the installation plate.

1

2

Hook

Hook here

1 Installation

plate

Press

(unhook)

Fig. 8-4-17

• For detaching the indoor unit from the installation
plate, pull the indoor unit toward you while pushing
its bottom up at the specified parts.

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 the 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

PushPush

Fig. 8-4-18

− 39 −

FILE NO. SVM-07023

8-4-6. Drainage

1. Run the drain hose sloped downwards.

NOTE

• Hole should be made at a slight downward slant on

the outdoor side.

Do not form the
Do not rise the
drain hose.

50 mm
or more

Do not put
the drain
hose end
into water.

drain hose into

a wavy shape.

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

Fig. 8-4-19

2. Put water in the drain pan and make sure that the

water is drained out of doors.

3. When connecting extension drain hose, insulate the

connecting part of extension drain hose with shield
pipe.

Shield pipe

Drain hose

Inside the room

Extension drain hose

Fig. 8-4-20

CAUTION

Arrange the drain pipe for proper drainage from the
unit.
Improper drainage can result in dew-dropping.

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

8-5-1. Installation place

• A place which provides the spaces around the

outdoor unit as shown in the left diagram.

• A place which can bear the weight of the outdoor

unit and does not allow an increase in noise level
and vibration.

• A place where the operation noise and discharged

air do not disturb your neighbors.

• A place which is not exposed to a strong wind.

• A place free of a leakage of combustible gases.

• A place which does not block a passage.

• When the outdoor unit is to be installed in an

elevated position, be sure to secure its feet.

• An allowable length of the connecting pipe is up to

.

10 m

• An allowable height 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 exposed to strong wind like a
coast or on a high storey of a building, secure
the normal fan operation using a duct or a wind
shield.

3. In particularly windy areas, install the unit such

as to avoid admission of wind.

4. Installation in the following places may result in

trouble.
Do not install the unit in such places.

• A place full of machine oil.

• A saline-place such as the coast.

• A place full of sulfide gas.

• A place where high-frequency waves are likely

to be generated as from audio equipment,
welders, and medical equipment.

Space for pipes

Fig. 8-4-21

Wall

Drain guide

− 40 −

Strong

wind

Fig. 8-5-1

FILE NO. SVM-07023

8-5-2. Refrigerant piping connection

1. Cut the pipe with a pipe cutter.

90°

Obliquity

Roughness

Fig. 8-5-2

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

• Projection margin in flaring : A (Unit : mm)

A

Die

Pipe

Fig. 8-5-3

Outer dia.

of copper pipe

Rigid Imperial

A

6.35 0.5 to 1.0 1.0 to 1.5

Warp

Outer dia.

of copper pipe

∅6.35 16 to 18 (1.6 to 1.8 kgf·m)

Tightening torque

∅9.52 30 to 42 (3.0 to 4.2 kgf·m)

• Tightening torque of flare pipe connections

Flare at indoor unit side

Flare at outdoor unit side

Fig. 8-5-4

(Unit : N·m)

9.52 0.5 to 1.0 1.0 to 1.5

<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

conditions.

Mark line

Fig. 8-5-5

Flare nutHalf union

Externally
threaded side

Use a wrench to secure. Use a torque wrench to tighten.

Internally
threaded side

Fig. 8-5-6

CAUTION

•

KEEP IMPORTANT 4 POINTS FOR 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)

− 41 −

FILE NO. SVM-07023-1

8-5-3. Evacuating

After the piping has been connected to the indoor unit,
you can perform the air purge together at once.

AIR PURGE

Evacuate the air in the connecting pipes and in the
indoor unit using
a vacuum pump. Do not use the refrigerant in the
outdoor unit.
For details, see the manual of the vacuum pump.

<Using a vacuum pump>

Be sure to use a vacuum pump with counter-flow
prevention function so that inside oil of the pump does
not flow backward into pipes of the air conditioner
when the pump stops.

1. Connect the charge hose from the manifold valve to
the service port of the gas side packed valve.

2. Connect the charge hose to the port of the vacuum
pump.

3. Open fully the low pressure side handle of the
gauge manifold valve.

4. Operate the vacuum pump to start evacuating.
Perform evacuating for about 15 minutes if the piping
length is 20 meters. (15 minutes for 20 meters)
(assuming a pump capacity of 27 liters per minute.)
Then confirm that the compound pressure gauge
reading is 101 kPa (76 cmHg).

-

5. Close the low pressure side valve handle of gauge
manifold.

6. Open fully the valve stem of the packed valves
(both sides of Gas and Liquid).

7. Remove the charging hose from the service port.

8. Securely tighten the caps on the packed valves.

<Packed valve handling precautions>

·

Open the valve stem all the way out; but do not try
to open it beyond the stopper.

·

Securely tighten the valve stem cap with torque in
the following table:

Gas side 30 to 42 N·m

Æ

( 9.52 mm) (3.0 to 4.2 kgf·

m)

Liquid side 16 to 18 N·m

Æ

( 6.35 mm) (1.6 to 1.8 kgf·

Service port

9 to 10 N·m
(0.9 to 1.0 kgf·m)

m)

Hexagonal wrench
is required.

m

m

4

Fig. 8-5-8

Compound pressure gauge

-

101 kPa (76 cmHg)

Handle Lo

Charge hose

Connecting pipe

Service port
(Valve core (Setting pin))

Packed valve at liquid side

Pressure gauge

Manifold valve

Charge hose

Vacuum pump
adapter for
counter-flow
prevention

Vacuum

pump

Packed valve at gas side

Fig. 8-5-7

Handle Hi
(Keep full closed)

- 42-

FILE NO. SVM-07023

8-5-4. Wiring connection

1. Remove the valve cover from the outdoor unit.

2. Connect the connecting cable to the terminal as

identified with their respective matched numbers on
the terminal block of indoor and outdoor unit.

3. When connecting the connecting cable to the

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) from any

water coming in the outdoor unit. Proceed them so
that they do not touch any electrical or metal parts.

<Stripping length of connecting cable>

For RAS-07S2AH-E

Terminal block

75 mm

10 mm

10 mm

Earth line

65 mm

Terminal
screw

Connecting
cable

Screw

Cord clamp

Fig. 8-5-9

For RAS-10S2AH-E

Terminal block

100 mm

10 mm

Earth line

Terminal
screw

8-6. How to Set Remote Contr

A or B

When operating one indoor unit in a situation where
two indoor units have been installed in the same
room or nearby rooms, this operation prevents the
remote controller signal from being received
simultaneously by both units, thus preventing both

units from operating.

·

The indoor unit on which the remote controller
selection has been set to B receives the signal
of the remote controller also set to B.
(At the factory the remote controller selection is
set to A on all the indoor units. There is no
A setting display.)

The remote control signal is not recived when the

·

indoor unit setting is different from the remote
control one.

Remote Control B Setup

1) Press RESET button on the indoor unit to turn

the air conditioner ON.

2) Point the remote control at the indoor unit.

Earth
line

3) Push and hold CHK button on the Remote
Control by the tip of the pencil. "00" will be shown

on the display.

4) Press MODE during pushing CHK . "B" will
show on the display and "00" will disappear and
the air conditioner will turn OFF. The Remote
Control B is memorized.

Note: 1. Repeat above step to reset Remote Control to be A.

2. Remote Control A has not “A” display.

3. Default setting of Remote Control from factory is A.

·

·

ol Selector

·

Screw

10 mm

50 mm

Connecting
cable

Fig. 8-5-10

CAUTION

CAUTION

• Wrong wiring connection may cause some

electrical parts burn out.

• Be sure to comply with local codes on running

the wire from indoor unit to outdoor unit (size of
wire and wiring method etc.)

• Every wire must be connected firmly.

NOTE

• Wire type : H07 RN-F or 245 IEC66 (2.0 mm

Cord clamp

2

or more)

Earth
line

− 43 −

“B” Display

“00” Display

PRESET

ONE-TOUCH

QUIET

SWING

FIX Hi-POWER ECO

TIMER

ON OFF

SLEEP

Fig. 8-6-1

FAN

MODE

COMFORT

SLEEP

CLR

SET

8-7. Others

8-7-1. Gas leak test

Valve cover

Valve stem cap
connection

Service cap
connection

Fig. 8-7-1

• Check the flare nut connections, valve stem cap

connections and service port cap connections for
gas leak with a leak detector or soap water.

8-7-2. Test operation

To switch the TEST RUN (COOL) mode, press

RESET button for 10 sec.
(The beeper will make a short beep.)

FILE NO. SVM-07023

RESET button

Fig. 8-7-2

8-7-3. 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.

<How to set the auto restart>

• Press and hold the RESET button for about

3 seconds. After 3 seconds, the electronic beeper
makes three short beeps to tell you the Auto
Restart has been selected.

• To cancel the Auto Restart, follow the steps

described in the section Auto Restart Function of
the Owner’s Manual.

− 44−

9. TROUBLESHOOTING CHART

FILE NO. SVM-07023

9-1. Troubleshooting Procedure

9-2-2. Incorrect cable connection between Indoor

and outdoor units

Follow the details of 9-2. Basic Check Items.
If there is no trouble corresponding to 9-2, check
whether or not there are faulty parts following
9-4. Self-Diagnosis by Remote Control.

9-2. Basic Check Items

9-2-1. Power supply voltage

The line voltage must be AC 220 − 240V. If it is not
within this range, the air conditioner may not operate
normally.

The indoor unit is connected to the outdoor unit with
5 cables (Heat pump model) or 3 cables (Cooling Only
model). Check that the indoor and outdoor units have
been properly connected with terminals assigned the
same numbers. If the connectors are not properly
connected, the outdoor unit will not operate normally,
or OPERATION lamp and TIMER lamp will blink (5Hz).

9-2-3. Program control

The microcontroller operates as shown in Table 9-2-1
to control the air conditioner. If there are any opera­tional problems, check whether or not the problems
correspond to Table 9-2-1. If they correspond to the
Table, they are not problems with the air conditioner,
but they are indispensable operations to control and
maintain the air conditioner properly.

Table 9-2-1

No. Operation of air conditioner Descriptions

1 When the main power supply is turned on,

the OPERATION lamp on the indoor unit
blinks.

2 The indoor fan motor speed does not change

in the Dry operation.

The OPERATION lamp blinks to indicate that power is turned on.
If the [ ] button is pressed, the lamp stops blinking.

The indoor fan motor speed is automatically controlled in the Dry
operation.

3 The compressor is not turned off even though

the room temperature is in the range that the
compressor is turned off.

4 The compressor is not turned on and off even

though the thermo control is operated in the
Dry operation.

5 The outdoor fan motor stops in the Heating

operation.

6 The compressor is not turned on even though

the room temperature is in the range that the
compressor is turned on.

7 The operation mode changes in the

Automatic operation.

8 The Fan only operation continues in the

Automatic operation.

9 The Hi-POWER operation does not work.

The compressor has a function that it is not turned off for
3 minutes after it is turned on even though the room temperature
is in the range that the compressor is turned off.

In the Dry operation, the compressor is turned on and off
automatically at the regular intervals, independent of the thermo
control.

When the indoor heat exchanger temperature is high, the outdoor
fan motor is stopped by the high-temperature limit control
operation.

The compressor is not turned on in the restart delay timer
(3-minutes timer) operation. It is also not turned on after the power
supply is turned on because of this timer operation.

In Automatic operation, the room temperature is detected all time
for control fan speed and the operation mode is changed every
15 minutes according to difference between the room temperature
and the preset temperature.

When the room temperature is in the range (Preset temperature
± 1°C), the Fan only operation is selected.

This operation does not work when the unit is in the Dry operation
or Fan only operation.

− 45

FILE NO. SVM-07023

9-3. Primary Judgement

9-3-1. Role of indoor unit controller

The indoor unit controller receives the operation
commands from the remote control and executes
them.

•Temperature measurement at the air outlet of the

indoor heat exchanger by the indoor temperature
sensor

•Temperature setting of the indoor heat exchanger by

the heat exchanger sensor

•Louver motor control

•Indoor fan motor operation control

•LED display control

•Transferring of operation commands to the outdoor

unit

Table 9-3-1

Lamps Self-diagnosis

A OPERATION lamp is blinking. (1Hz)

B OPERATION lamp is blinking. (5Hz)

C OPERATION lamp is blinking. (5Hz)

D OPERATION lamp is blinking. (5Hz)

E OPERATION lamp is blinking. (5Hz)

F OPERATION and TIMER lamps are blinking.

(5Hz)

9-3-2. Failure diagnosis

The indoor unit diagnoses the operation condition and
indicates the information of the self-diagnosis with the
lamps on the display panel of the indoor unit.

Power failure (when the power supply is turning on)

Thermo sensor (TA) short or break

Heat exchanger sensor (TC) short or break

Indoor fan motor lock or failure

Indoor P.C. board failure

Wrong wiring of connecting cable

G OPERATION and TIMER lamps are blinking.

Table 9-3-2 Diagnosis by detective operation

Symptom Check Primary judgement

The remote control
does not work.

The outdoor fan
does not rotate.

Turn off the power supply once,
then turn it on. Try to operate
the remote control.

The compressor operates.

The compressor does not operate.

Cycle failure

•Gas shortage or other refrigerant cycle trouble

•Heat exchanger sensor open, break or short

•Overload relay or thermostat trouble of compressor

The remote control
still does not work.

The remote control
works.

The indoor unit (and/or remote
control) is/are defective.

OK.

The outdoor unit (Outdoor fan
motor) is defective.

An internal part of the
compressor or PCB is defective.

− 46 −

FILE NO. SVM-07023-1

9-4. Self-Diagnosis by Remote Controller (Check Code)

1. If the lamps are indicated as shown B to G in Table 9-3-1, exchanger the self-diagnosis by the remote control.

2. When the remote controller is set to the service mode, the indoor controller diagnoses the operation condi­tion and indicates the information of the self-diagnosis on the display of the remote control with the check
codes. If a fault is detected, all lamps on the indoor unit will flash at 5Hz and it will beep for 10 seconds

(Pi, Pi, Pi.... ). The timer lamp usually blinks (5Hz) during self-diagnosis.

9-4-1. How to Use Remote Controller in Service Mode

1

Press [CHECK] button with a tip of pencil to set the
remote controller to the service mode.

• “ ” is indicated on the display of the remote
controller.

PR E S E T

ON E- TOU CH

QU IE T

S WIN G

TI ME R

SL E E P

C HK

TOSHIBA

FA N

TE MP

TEMP

MOD E

C OMF OR T

S LE E P

FI X H i-P OW ER EC O

ON

OF F

FI LT E R

C LO CK

2

Press [ON ] or [OFF ] button

If there is no fault with a code, the indoor unit will beep
once (Beep) and the display of the remote controller will
change as follows :

• • •

• The TIMER indicator of the indoor unit flashes continuously.

(5 times per 1 sec.)

• Check the unit with all 52 check codes ( to )
as shown in Table-11-4-1.

• Press [ON ] or [OFF ] button to change the check
code backward.

CL R

SE T

If there is a fault, the indoor unit will beep for 10
seconds (Beep, Beep, Beep...).

Note the check code on the display of the remote
controller.

• 2-digits alphanumeric will be indicated on the display.

• All indicators on the indoor unit will flash.

(5 times per 1 sec.)

Alphanumeric characters are
used for the check codes.
is 5. is 6.
is A. is B.
is C. is D.

Press [ ] button to release the service mode.

3

• The display of the remote controller returns to as it
was before service mode was engaged.

Time shortening method.

4

1. Press SET button while pushing CHECK button.

2. Press [ ] button.

Fig. 11-4-1

− 47 −

Block level Diagnosis function

Check Check

code

Block

Indoor
P.C. board

code

Symptom Conditioner Condition

Thermo. sensor
short/break.

Table 9-4-1

Continued
operation.

Air

status

Indicated
when detected
abnormal

FILE NO. SVM-07023

Judgement and action

1.Check thermo sensor.

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

Cable
connection/
Thermal
fuse
Refrigerant
system

Heat exchanger
sensor
short/break.

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

Abnormality of other
indoor unit P.C.
board.

1) Wrong wiring or
disconnection of
connective cable.

2) Terminal fuse cut
off.

Continued
operation.

All off

All off

All off

Indicated
when detected
abnormal

Indicated
when detected
abnormal

Indicated
when detected
abnormal

Indicated
when detected
abnormal

1.Check heat exchanger
sensor.

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

1.Check heat thermal
fuse is blow or not?
(Terminal block part.)

2.If the thermal fuse is
not blow, check indoor
fan motor.
(Refer to trouble
shooting flow charts.)

Replace P.C. borad.

1.Check connective
cable correct if wiring is
wrong.

2.Check thermal fuse
and Terminal blocks.

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

Other parts
(including
compressor)

1) Overload relay or
thermostat for
compressor

All off

Indicated
when detected
abnormal

1.If overload relay and

break.

2.If refrigerant cycle is

3. If heat exchanger

Content detected by the check codes "

" o " t " 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.

– 48−

themostat for compres­sor are OK, check
refrigerant cycle.

OK, check P.C. board.

sensor is OK, check
overload relay and
themostat for
compressor.

9-5. Troubleshooting Flowcharts

9-5-1. 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.

FILE NO. SVM-07023

Operation

Check Items

Main cause

Countermeasure

Symptom

Does the thermal

(Under PF. Terminal)

Is the indication voltage

NO

(DC12V or 5V) of main

P.C. board correct?

Is the voltage

across C63 measured

DC310V ~ 340V?

YES

NO

Does the fuse

(F01) blow?

fuse blow?

NO

Does the OPERATION

lamp blink?

Does the power turn on

by pushing the [ ] button

remote control?

NO

NO

YES

Refer to the paragraph

"Pre-check", or defective circuit

before power P.C. board block.

of the

YES

YES

YES

NO NO

YES

Parts (R21, R22, SG01,

C01, C02, DB01, C63

M01) are defective.

Wrong wiring of

AC cord or connecting

cable is defective.

Does the CN14

connector the wrong

connecting?

Does the transmission

indicator of remote

control flash normally

and transmit certainly?

(No problem)

YES

NO

YES

P.C. board is

defective.

Remote control is

defective.

Replace the remote

control.

Replace the

thermal fuse set.

Check connection.

Replace the main

P.C. board.

Re-wiring the cable.

Is the voltage

across C66

measured DC12V?

YES

* 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.

Shut off the power

supply once, and turn

NO

it on again after

disconnecting the motor

connector CN10*.

Is the voltage

across C66

measured

DC12V?

YES

NO

Replace Fan motor

and P.C. board.

Replace P.C. board.

- 49-

9-5-2. Power can not be turned on after replacing indoor P.C. board

<Checking Procedure>

Connect the AC

Power supply

FILE NO. SVM-07023

Does the OPERATION

lamp blink?

YES

NO NO

RAS-07SKHP-E, RAS-10SKHP-E

White

Black

Red

Blue

2

3

1

Indoor Terminal Block

4

Is it wired as shown

in Figure below?

YES

Return the wiring of the

power relay is returned to

the normal procedure.

To the paragraph of

"No Power turns on".

CN31

Green & yellow

Blue

Brown

N

L

Supply AC 220 ~ 240 V
50 / 60 Hz

RY01

4

3

T02

− 50 −

9-5-3. Outdoor unit does not operate

Shut off the power supply

from AC outlet once and turn

it on after 5 seconds.

FILE NO. SVM-07023

Does the OPERATION lamp blink?

YES

Does the power turn on by pushing

the [ ] button of the

remote control?

YES

Is AC 220-240V supplied between

terminal block 1 -

Is cable connection between indoor

and outdoor units correct?

Check items as following procedure

in 9-5-4, 9-5-5, 9-5-6

YES

YES

2

?

NO

NO

NO

NO

See "Power can not be turned on".

See "Power can not be turned on".

Relays (RY01) or Q16

or IC30 is failure.

Correct cabling between indoor

and outdoor units.

Replace the

P.C. board.

- 51-

9-5-4. Only compressor does not operate

Shut off the power supply

from AC outlet once and turn

it on after 5 seconds.

FILE NO. SVM-07023

Does the OPERATION lamp blink?

YES

Does the power turn on by

pushing the [ ] button

of the remote control?

YES

Is the voltage across the indoor terminal

( 1 - 2 ) AC 220-240V?

YES

Is cable connection between indoor

and outdoor units correct?

YES

Is the voltage across the outdoor terminal

( 1 - 2 ) AC 220-240V?

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) or Q16

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)

- 52-

9-5-5. Only outdoor fan does not operate

Shut off the power supply

from AC outlet once and

turn it on after 5 seconds.

FILE NO. SVM-07023

Does the OPERATION lamp blink?

YES

Does the power turn on by

pushing the [ ] button

of the remote control?

YES

Is the voltage across the terminal

2 - 4

AC 220-240V?

YES

Is cable connection between indoor

and outdoor units correct?

YES

Is the voltage across the terminal

2 - 4

AC 220-240V?

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 (RY03) or Q25

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.

NO

NO

Outdoor fan motor is defective.

Capacitor for outdoor

fan motor is defective.

- 53-

9-5-6. Only 4-Way valve does not operate (During heating operation)

Shut off the power supply

from AC outlet once and

turn it on after 5 seconds.

FILE NO. SVM-07023

Does the OPERATION lamp blink?

YES

Does the power turn on by

pushing the [ ] button

of the remote control?

YES

Is the voltage across the indoor terminal

( 2 - 3 ) 220-240V?

YES

Is cable connection between indoor

and outdoor units correct?

YES

Is the voltage across the outdoor terminal

( 2 - 3 ) 220-240V?

YES

Is the wiring of solenoid coil for

4-way valve normal?

YES

NO

NO

NO

NO

NO

NO

See "Power can not be turned on".

See "Power can not be turned on".

Relays (RY04) or Q24

or IC30 is failure.

Correct cabling between indoor

and outdoor units.

Cables between indoor

and outdoor units are defective.

Solenoid coil is defective.

Replace the P.C.

board.

4-way valve is defective.

-54 -

9-5-7. Only the indoor fan does not operate

<Check procedure>

Shut off the

power supply once.

Turn on the power supply.

FILE NO. SVM-07023

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.

Does the fan speed

become higher?

YES

NO

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.

Operation

stops

NO

NO

Replace the P.C. board.

Does connecting

terminal, connecting

cable or power supply

cord completely?

Does not found the short

wire about connecting

cable and power cord?

YES

Repair the
bearing of

the fan.

Motor control circuit failure

(IC30, IC03, Q17, D38, R25, R26)

or 12V power circuit failure.

Replace the P.C. board.

Thermal fuse operated

temperature rising cause

of incompleted connecting.

NO

due to prevent

Normal

Is the rotation signal (DC+5V-0V)

output between 2 (gray lead wire)

and 3 (brown lead wire) of the motor

connector (CN11) when rotating
the cross flow fan by hand in no

operating status?

(1 pulse/one turn)

YES

Replace the control

P.C. board.

− 55 −

NO

Replace the fan motor

Replace connecting

the cable (or power cord),

thermal fuse and

terminal block.

FILE NO. SVM-07023

9-6. Troubleshooting for Remote Control (Including the Indoor P.C. Board)

There is no been from

Push the button.

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?

YES

NO

Is there any

thyristor

fluorescent light

near by?

YES

NO

YES

NO NO

Is operation possible

when setting the
temporary switch of the
air conditioner main unit

to "TEST RUN" or

"TEMPORARY AUTO"?

Does the transmission

indicator blink?

Is operation

possible when the

transmitter is moved

nearer to the infrared

sinnal receiver of the

air conditioner?

YES

Battery life

NO

Reset the remote control

by take off batteries.

Push the button

Dose 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 when

transmitting within

5 cm distance

from the radio?

YES

P.C. board is failure.

Replace

P.C. board

Note: After battery replacement, Shortcircuit the metal

terminal at the side of the battery comparment

NO

Replace the

batteries

NO

Normal

Is there any

beep and

operation?

YES

Remote control

is failure.

Replace remote

control.

− 56 −

FILE NO. SVM-07023

9-6-1 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 procedres

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 receiver unit and LED.

− 57 −

(3) Checking procedure

FILE NO. SVM-07023

Table 9-6-1

No.

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.

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 1-4 of right
column are not necessary to
perform.

3

Make the operation status by
pushing once the 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.

Procedure

Check Point (Symptom) Causes

1. Is the fuse blown?

Voltage check

1.Between pin 3 of RY01 and CN31

(AC 220∼240V)

2.Between + and − of C63

(DC 310 ~ 340V)

3. Between

4.Between 12V and GND

Voltage check

1. Voltage of relay coil. (DC 12V)

Between pin C of Q16 and GND

2.Between No. 1 and 2 of connect­ing cable terminal block.

(AC 220∼240V)

1.All indicators light for 3 sec..

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

5V and GND

1.•Application of shock voltage.

•Overload by short-circuit of the

parts.

1.•AC power cord is defective.

•Poor contact of the terminal plate.

•Miss wiring of the power relay.

2.•Capacitor (C01, C02) is defective.

•Line filter (L01) is defective.

•Resistor (R319) is defective.

•Diode (DB01) is defective.

3. IC04 is defective.

4.M01, DB01, R319, C63 are

defective.

1. Defective relay driver. (Q16)

2. Poor contact of relay.

Defective indicator, or poor

}

housing assembly. (CN13)

5

Make the operation status by
pressing once the 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.

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. Start the
operation with the following
condition.

1.Operation [Cooling]

2.Airflow [High fan]

3.Continuous operation

1.Compressor does not operate.

2.OPERATION lamp blinks.

1.Compressor does not operate.

2.OPERATION lamp blinks.

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

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

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 9-6-2 for the judgment of
defective resistance values.)

4.Main P.C. board is defective.

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 9-6-2
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.

− 58 −

FILE NO. SVM-07023-1

Table 9-6-2 Approximate resistance value of thermo sensor

Temperature 0°C 10°C 20°C 25°C 30°C

Resistance value 33.8 20.35 12.59 10.00 7.99

9-6-2. How to shorten time of restart delay timer

1 Press [SET] button while pressing [CHK] button

with a tip of a pencil.

2 Then press [ ] button to transmit the

signal to the indoor unit.

(kΩ)

PRESET

ONE-TOUCH

QUIET

SWING

TIMER

SLEEP

CHK

FIX Hi-POWER ECO

ON

TEMP

FILTER

OFF

FAN

MODE

COMFORT

SLEEP

CLOCK

CLR

SET

9-6-3. How to set/cancel the self cleaning function

The self cleaning function is set from a factory. To cancel this function, should keep press the

temporary button for 20 seconds till can hear the long combination sound and repeat the same
procedure when need to set.

2

1

− 59 −

FILE NO. SVM-07023

10. PART REPLACEMENT

10-1. Indoor Unit

No. Part name Procedures Remarks

1 Front panel

2 Electrical part

How to remove the front panel

1) Stop the operation of the air conditioner and
turn off its main power supply.

2) Pull the air inlet grille toward you to open it
and remove the air inlet grille.
Then remove the 2 screws fixing the front
panel.

3) First open the horizontal louver, and then
remove the front panel from the back body
by pulling it toward you.

How to mount the front panel

Push the front panel back in and make sure
all hooks are locked.

How to remove the electrical part.

1) Remove the front panel with procedure 1 .

2) Remove the screw holding the electrical part
cover.

3) Disconnect the 3 connectors 2-(3P) for the fan
motor and the connector (5P) for the louver
motor from the P.C. board assembly.

4) Pull out the TC sensor from the sensor
holder.

5) Remove the screw for the ground connection,
remove the screw for the electrical part box.

Then remove the LED and the electrical part

box from the main unit.

2

2

2 2-Screws

3

2 Screws

4 TC Sensor

2

3 Horizontal

louver

How to mount the electrical part.

1) To put back the electrical part box, lock it to
the upper hook of the back body.

2)

Tighten the screws on the electrical part box.

3) Connect the 3 connectors and arrange the
wiring same as original condition and then
tighten the screw from the LED unit to the
back body.

4) Attach the TC sensor to the holder.

5) Tighten the screw for the ground connection.

6) Tighten the screw on the electrical part cover.

1) Remove the front panel and the electrical
part following procedure 2.

2) Remove the center shaft of the horizontal
louver from the back body.

3) Remove the left shaft from the back body.

4) Remove the horizontal louver from the back
body.

3 Left shaft

3-Connectors

5

2 Center shaft

3

Screws

− 60 −

FILE NO. SVM-07023

No. Part name Procedures Remarks

4 Heat exchanger

5 Cross flow fan

1) Remove the front panel, electrical part and
the horizontal louver following procedure 3.

2) Remove the pipe holder at the rear side of
main unit.

3) Remove the 2 screws on the heat exchanger
at the base bearing.

4) Remove the screw on the heat exchanger
at the fixed plate from the back body and then
pull out the right hand side until the socket of
heat exchanger released from the hook of the

band motor (L), and then pull out the upper

side of heat exchanger slowly.

1) Remove the front panel, electrical part,
horizontal louver and the heat exchanger
following procedure 4.

2) Remove the 2 screws on the band motor (L)
and remove the 2 screws on the band motor
(R) and then remove the cross flow fan.

3) Loosen the set screw of the cross flow fan
then separate the fan and the fan motor.

Notice
To assemble cross flow fan and fan motor to the
unit, please turn the fan motor unit the center of
its terminal meets the top position of band motor
(R).

Fix the cross flow fan with the set screw at the
position where the gap between the back body
and the right surface of the cross flow fan is

4.7 mm.

2 Pipe holder

3

2-Screws

2-Screws (R)
2

2-Screws (L)

2

4.7 mm

6 Set screw

Middle of the fan motor terminal

4 Screws

6 Base bearing

1) Remove the front panel, electrical part,
horizontal louver, heat exchanger and the
cross flow fan following procedure 5.

2) Remove the 2 screws fixing the base bearing.

3) Remove the bearing from the base bearing. If
the housing protrudes from the base bearing,
put the housing in position and attach the
bearing to the base bearing.

− 61 −

2

2-Screws

FILE NO. SVM-07023

10-2. -1. Outdoor Unit (RAS-07S2AH-E)

No. Part name Procedures Remarks

1 Common

procedure

1. Detachment

1) Stop operation of the air conditioner, and
turn off the main switch and breaker of the
air conditioner.

2) Remove the valve cover. (ST1T∅4 x 10s
1 pc)

• After removing screw, remove the valve

cover pulling it downward.

3) Remove the wiring cover (ST1T∅4 x 10s 2
pcs.), and then remove the power cord,
connecting cable, and cord clamp
(ST2T∅4 x 16s 3 pcs.).

4) Remove the upper cabinet.
(ST1T∅4 x 10s 5 pcs.)

• After removing screws, remove the

upper cabinet pulling it upward.

2. Attachment

1) Attach the upper cabinet.
(ST1T∅4 x 10s 5 pcs.)

• Hook the rear side of the upper cabinet

to the claw of the rear cabinet, and then
place it on the front cabinet.

2) After connecting the power cord and
connecting cable, attach the cord clamp
and wiring cover.

• Insert the upper part into the upper

cabinet, and insert the claw which has
been hooked to the lower part into the
square hole, and then fix it with screw.
(ST1T∅4 x 10s 1 pc.)

3)

Attach the valve cover. (ST1T∅4 x 10s 1 pc.)

• Insert the upper part to the upper

cabinet, set the hook claw of the valve
cover to square holes (at three
positions) of the main unit, and attach it
pushing upward.

Upper cabinet

Wiring cover

Valve cover

Upper cabinet

2 Front cabinet

1. Detachment

1) Perform work of item 1 of 1.

2) Remove upper screw (ST1T∅4 x 10s 3 pcs.)
of the front cabinet, and lower screws
(ST1T∅4 x 10s 8 pcs.) of the front cabinet.

• Both side of front cabinet envelop the

unit, so remove it by pulling sideward.

2. Attachment

1) Assemble front cabinet to the unit.

2) Attach the removed screws to the original
positions.

– 62–

FILE NO. SVM-07023

No. Part name Procedures Remarks

3 Fan motor

4 Compressor

1) Perform work of item 1 of 1 and 1 of 2.

2) Remove the flange nut fixing the fan motor
and the propeller fan.

• Flange nut is loosened by turning

clockwise.
(To tighten the flange nut, turn counter­clockwise.)

3) Remove the propeller fan.

4) Disconnect the connector for the fan motor
from the ASM-E-PARTS.

5) Remove the fixing screws (4 pcs.) holding
the fan motor by hand so that it does not
fall.

1) Perform work of item 1 of

1 of 2,

3

1

,

2) Extract refrigerant gas.

3) Remove the partition board.
(ST1T∅4 x 10s 3 pcs.)

4) Remove the sound-insulation material.

5) Remove the terminal cover of the
compressor, and disconnect the lead wire
of the compressor thermo and the
compressor from the terminal.

6) Remove the pipe connected to the
compressor with a burner.

• Make sure the flame does not touch the

4 way valve.

7) Remove the fixing screw of the base plate
and heat exchanger.
(ST1T∅4 x 10s 2 pcs.)

8) Pull upward the refrigeration cycle.

9) Remove the nut fixing the compressor to
the base plate.

Propeller fan

Fan motor

Flange nut

Compressor

– 63–

FILE NO. SVM-07023

No. Part name Procedures Remarks

5 Fan guard

1. Detachment

1) Perform work of item 1 of 1 and 1 of 2.

Requirement:
Perform the work on a corrugated
cardboard, cloth, etc. to prevent
scratches to the product.

2) Remove the front cabinet, and place it
down so that the fan guard side faces
downwards.

3) Remove the hooking claws by pushing a
minus screwdriver according to the arrow
mark in the right figure, and remove the
fan guard.

2. Attachment

1) Insert the claws of the fan guard in the
hole of the front cabinet. Push the hooking
claws (8 positions) by your hand and fix
the claws.

Requirement:
This completes all the attaching
work. Check that all the hooking
claws are fixed to the specified
positions.

Minus screwdriver

Hooking claw

6 Capacitor for

compressor

7 Capacitor for

fan motor

1) Perform the common procedure 1.

2) Remove the fixing screw and the capacitor

band.
( 1-Screw ∅4 x 10s)

3) Disconnect the lead wires.

1) Perform the common procedure 1.

2) Remove the fixing screw and the capacitor

band.
( 1-Screw ∅4 x 10s)

3) Disconnect the lead wires.

Capacitor for

compressor

Capacitor band

Screws

∅4 x 10s

Capacitor

for fan motor

Screws

∅4 x 10s

– 64 –

FILE NO. SVM-07023

10-2-2. Outdoor Unit (RAS-10S2AH-E)

No. Part name Procedures Remarks

1 Common

procedure

1) Stop the operation of air-conditioner, and
disconnect the power cord from the AC
supply.

2) Remove packed valve cover and Electric
parts cover.
(2-Screws ∅4 x 10L)

3) Remove the cord clamp (2-Screws ∅4 x 16L)
and disconnect the connecting cable.

4) Remove the upper cabinet (5-Screws ∅4 x 10L)
Pulling out upword.

5) Remove the front cabinet.
(3-Screws ∅4 x 10L)
Pull the front right portion toward you, and
remove it pulling out upward.

Cord clamp

2-Screws Ø4 x 16L

Packed valve cover

2-Screws Ø4 x10L

Upper
cabinet

2 Capacitor for

compressor

3 Capacitor for

fan motor

1) Perform the common procedure 1.

2) Remove the fixing screw and the capacitor
band.
(1-Screw ∅4 x 10L)

3) Disconnect the lead wires.

1) Perform the common procedure 1.

2) Remove the fixing screw and the capacitor
band.
(1-Screw ∅4 x 10L)

3) Disconnect the lead wires.

– 65 –

Front
cabinet

Screws
∅4 x 10L

Capacitor

Capacitor band

for fan motor

Capacitor

for
compressor

Screws
Ø4 x10L

11. EXPLODED VIEWS AND PARTS LIST

11-1. Indoor Unit (E-Parts Assy)

405

401

FILE NO. SVM-07023

411

412

410

403

404

406

410

402

Location Part Location Part

No. No. No. No.

401 43T60378 TERMINAL 406 43T60077 FUSE, TEMPERATURE, 73C
402 43T60002 TERMINAL BLOCK; 3P 410 43T62003 CORD CLAMP
403 43T69371 SENSOR;HEAT EXCHANGER 411 43T69625 ASM-PCB-SERV (RAS-07SKHP-E)
404 43T50314 SENSOR;THERMOSTAT 411 43T69626 ASM-PCB-SERV (RAS-10SKHP-E)
405 43T69612 PC BOARD ASSY ;WRS-LED 412 43T60379 TERMINAL

Description Description

-66-

11-2. Indoor Unit

201

211

210

209

213

219

218

215

214

217

FILE NO. SVM-07023

215

212

224

207

206

229

220

222

221

204

202

227

204

225

Location Part Location Part

No. No. No. No.

Description Description

226

203

205

228

208

Electric Parts Assembly

201 43T00478 FRONT PANEL ASSY 215 43T49006 HOLDER FOR PLATE
202 43T09403 GRILLE OF AIR INLET (ORIGINAL) 217 43T22312 MOLD BEARING ASSEMBLY
203 43T03359 BACK BODY ASSY 218 43T39319 BASE BEARING
204 43T80317 AIR-FILTER 219 43T20323 ASSY CROSS FLOW FAN
205 43T09392 HORIZONTAL LOUVER 220 43T39320 MOTOR BAND(LEFT)
206 43T70313 DRAIN HOSE 221 43T39321 MOTOR BAND(RIGHT)
207 43T79301 CAP-DRAIN 222 43T21393 FAN MOTOR
208 43T21363 MOTOR; STEPPING 224 43T82309 INSTALLATION PLATE
209 43T44386 REFRIGERATION CYCLE ASSY 225 43T69615 WIRELESS REMOTE CONTROL
210 43T47353 PIPE; SUCTION (RAS-13) 226 43T83003 REMOTE CONTROL HOLDER
211 43T47355 PIPE; SUCTION (U1U2_GD) 227 43T62326 TERMINAL COVER
212 43T11317 PIPE SHIELD 228 43T60317 CORD MOTOR LOUVER
213 43T19333 SENSOR FIX PLATE 229 43T07311 PIPE HOLDER
214 43T49329 PLATE OF EVA SEAL

- 67-

11-3. Outdoor Unit (RAS-10S2AH-E)

23

20

13

5

FILE NO. SVM-07023

18

17

12

16

15

21

26

11 : CAPILLARY TUBE : 1.2 DIA

24 : BUSHING
27 : RALAY;OVERLOAD

34 : DRAIN NIPPLE

14

35 : CAPILLARY TUBE : 0.8 DIA

25

22

32

33

1

19

3,4

6

7,9

2

8,10

Location Part Location Part

No. No. No. No.

1 43T42327 BASE PLATE ASSEMBLY 19 43T04301 PARTITION
2 43T41394 COMPRESSOR 20 43T39317 MOTOR BASE CONNECTION PLATE
3 43T49335 RUBBER CUSHION 21 43T39318 MOTOR BASE
4 43T97001 NUT 22 43T19330 PACKED VALVE COVER
5 43T43413 CONDENSER ASSEMBLY 23 43T00460 UPPER CABINET ASSEMBLY
6 43T00448 FIXING PLATE VALVE 24 43T96304 BUSHING
7 43T46332 VALVE;PACKED 6.35 DIA 25 43T62325 ELECTRIC PART COVER
8 43T00347 VALVE;PACKED 9.52 DIA 26 43T19331 FIN GUARD

9 43T47331 BONNET, 6.35 DIA 27 43T54316 RELAY;OVERLOAD
10 43T47332 BONNET, 9.52 DIA 28 43T61308 ELECTRIC PARTS BASE
11 43T47007 CAPILLARY TUBE; 1.2 DIA 29 43T55339 CAPACITOR,PLASTIC FILM
12 43T00449 FRONT CABINET 30 43T55325 CAPACITOR; PLASTIC-FILM
13 43T00459 LEFT CABINET 31 43T60373 TERMINAL-4P
14 43T00451 RIGHT CABINET ASSEMBLY 32 43T46321 4 WAY VALVE
15 43T21341 MOTOR;FAN 33 43T49332 SOLINOID COIL
16 43T20319 PROPELLER FAN 34 43T79305 DRAIN NIPPLE
17 43T47001 NUT FLANGE 35 43T47309 CAPILLARY TUBE; 0.8 DIA
18 43T19329 FAN GUARD

Description Description

-68-

11-4. Outdoor Unit (RAS-07S2AH-E)

FILE NO. SVM-07023

Location Part Location Part

No. No. No. No.

1 43T42335 BASE PLATE ASSEMBLY 17 43T04304 PARTITION
2 43T41365 COMPRESSOR(Made in China) 18 43T39326 MOTOR BASE CONNECTION PLATE
3 43T49327 CUSHION,RUBBER 19 43T39325 MOTOR BASE
4 43T97001 NUT 20 43T19337 PACKED VALVE COVER
5 43T43416 CONDENSER ASSEMBLY 21 43T00481 UPPER CABINET
6 43T00448 FIXING PLATE VALVE 22 43T96305 BUSHING
7 43T46308 VALVE;PACKED 6.35 DIA 23 43T62323 TERMINAL COVER
8 43T00347 VALVE;PACKED 9.52 DIA 24 43T19336 FIN GUARD

9 43T47331 BONNET, 6.35 DIA 25 43T54314 RELAY;OVERLOAD
10 43T47332 BONNET, 9.52 DIA 26 43T61310 ELECTRIC PARTS BASE
11 43T47308 CAPILLARY TUBE; 1.0 DIA 27 43T55338 CAPACITOR,PLASTIC FILM
12 43T00486 FRONT CABINET 28 43T55325 CAPACITOR; PLASTIC-FILM
13 43T21341 MOTOR;FAN 29 43T60373 TERMINAL-4P
14 43T20324 PROPELLER FAN 30 43T46333 4 WAY VALVE
15 43T47001 NUT FLANGE 31 43T49332 SOLINOID COIL
16 43T19335 FAN GUARD 32 43T79305 DRAIN NIPPLE

Description Description

− 69 −

FILE NO. SVM-03004(1)

TOSHIBA CARRIER (THAILAND) CO.,LTD.

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

AMPHUR MUANG, PATHUMTHANI 12000, THAILAND.

– 75 –