Toshiba RAS-13N2A-ES2, RAS-13GKP-ES2, RAS-13GA-ES2, RAS-13N2AH-ES2 SERVICE MANUAL

SERVICE MANUAL

AIR CONDITIONER

RAS-13GKHP-ES2 / RAS-13GAH-ES2

RAS-13GKP-ES2 / RAS-13GA-ES2

RAS-13NKHP-AS2 / RAS-13N2AH-AS2

FILE NO. SVM-06027

SPLIT WALL TYPE

RAS-13NKP-AS2 / RAS-13N2A-AS2

May, 2006

CONTENTS

1. SPECIFICATIONS

2. CONSTRUCTION VIEWS

2-1 Indoor Unit

2-2 Outdoor Unit

3. WIRING DIAGRAM

3-1 RAS-13GKHP-ES2 / RAS-13GAH-ES2
3-2 RAS-13GKP-ES2 / RAS-13GA-ES2
3-3 RAS-13NKHP-AS2 / RAS-13N2AH-AS2

3-4 RAS-13NKP-AS2 / RAS-13N2A-AS2

4. SPECIFICATION OF ELECTRICAL PARTS

4-1 Indoor Unit (RAS-13GKHP-ES2, RAS-13NKHP-AS2)
4-2 Outdoor Unit (RAS-13GAH-ES2,RAS-13N2AH-AS2)
4-3 Indoor Unit (RAS-13GKP-ES2,RAS-13NKP-AS2)
4-4 Outdoor Unit (RAS-13GA-ES2,RAS-13N2A-AS2)

5. REFRIGERATION CYCLE DIAGRAM

5-1 RAS-13GKHP-ES2 / RAS-13GAH-ES2

RAS-13NKHP-AS2 / RAS-13N2AH-AS2

5-2 RAS-13GKP-ES2 / RAS-13GA-ES2

RAS-13NKP-AS2 / RAS-13N2A-AS2

FILE NO. SVM-06027

6. CONTROL BLOCK DIAGRAM

6-1 RAS-13GKHP-ES2 / RAS-13GAH-ES2,

RAS-13NKHP-AS2 / RAS-13N2AH-AS2

6-2 RAS-13GKP-ES2 / RAS-13GA-ES2,

RAS-13NKP-AS2 / RAS-13N2A-AS2

7.

OPERATION DESCRIPTION

7-1

Outline of Air Conditioner Control
7-2 Description of Operation Circuit
7-3 Hi POWER Mode
7-4 High-Temperature Limit Control
7-5 Low-Temperature Limit Control

7-6 Defrost Operation
7-7 Current Limit Control
7-8 Auto Restart Function

7-9 Filter Check Lamp
7-10 Self-Cleaning function
7-11 QUIET Mode
7-12 COMFORT SLEEP mode

− 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 (Including The Indoor P.C. Board)

10. PARTS REPLACEMENT

10-1 Indoor Unit
10-2 Outdoor Unit

FILE NO. SVM-06027

11. EXPLODED VIEWS AND PARTS LIST

11-1 Indoor Unit (E-Parts Assy) (For RAS-13GKHP-ES2)
11-2 Indoor Unit (E-Parts Assy) (For RAS-13NKHP-AS2)

Indoor Unit (E-Parts Assy) (For RAS-13GKP-ES2)

11-3

Indoor Unit (E-Parts Assy) (For RAS-13NKP-AS2)

11-4

11-5 Indoor Unit

11-6 Outdoor Unit (RAS-13GAH-ES2,RAS-13N2AH-AS2)

11-7 Outdoor Unit (RAS-13GA-ES2,RAS-13N2A-AS2)

• This air conditioner is charged with

HFC (R410A) that doesn't deplete the
Ozone layer.

• This air conditioner requires special

installation for the refrigerant R410A.

− 2 −

1. SPECIFICATIONS

FILE NO. SVM-06027

MODEL

ITEM Cooling Heating Cooling

Capacity

Power source V 220 − 240

Power consumption kW 1.15 1.19 1.14 1.18 1.13 1.17
Power factor % 98 96 96 95 98 97

Running Indoor A 0.15

current Outdoor A 5.20 5.00 5.27 5.18 5.10 4.90
Starting current A 30

Moisture removal lit/h 2.0

Noise

Refrigerant

Refrigerant control

Interconnection

pipe

INDOOR UNIT

Dimensions Width mm 790

Net weight kg 10

Evaporator type Finned tube

Indoor fan type Cross flow fan

Airflow volume

Fan motor output W 20

Air filter Honeycomb woven filter with PP frame

OUTDOOR UNIT

Dimensions Width mm 780

Net weight

Condenser type Finned tube

Outdoor fan type Propeller fan

Airflow volume m3/h 2120 2200 2120 2200 2030 2150

Fan motor output W

Compressor

Safety device Fuse, Overload relay

Louver type Automatic louver

Usable outdoor temperature range °C 15 ~ 43 −10 ~ 24 15 ~ 43

Indoor (H/M/L) dB 41/35/31

Outdoor (220-240V) dB 50 51 50 51

Name of refrigerant

Rated amount

Gas side size

Connection type Flare connection

Liquid side size mm ∅ 6.35

Connection type Flare connection

Maximum length
(One way)

Maximum height
difference

Height mm 275

Depth mm 218

High fan m3/h 630 650 630

Medium fan m3/h 520 550 520

Low fan m3/h 430 490 430

Height mm 550

Depth mm

Model PA150X2C-4FT

Output W 1100

kW 3.74 3.82 4.20 4.26 3.75 3.75

Phase 1∅ 

Hz 50

kg

mm

m

m

kg

RAS-13GKHP-ES2 / RAS-13GAH-ES2

RAS-13NKHP-AS2 / RAS-13N2AH-AS2

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

R410A

1.08

Capillary tube

∅ 12.7

1

15*

6

RAS-13NKHP-AS2

RAS-13GAH-ES2,RAS-13N2AH-AS2

290

39

42

RAS-13GKP-ES2 / RAS-13GA-ES2

RAS-13NKP-AS2 / RAS-13N2A-AS2

26

50

0.98

RAS-13GKP-ES2RAS-13GKHP-ES2
RAS-13NKP-AS2

RAS-13GA-ES2,RAS-13N2A-AS2

38

30

51

− 3 −

Note : 1

• Capacity is based on the following temperature conditions.

FILE NO. SVM-06027

Temperature

Indoor unit inlet air temperature

Outdoor unit inlet air temperature

Note : 2

*1 No need to charge extra refrigerant.

Condition

Cooling Heating

(DB) 27°C 20°C

(WB) 19°C 15°C

(DB) 35°C 7°C

(WB) 24°C 6°C

JIS B8615-1

− 4 −

2-1. Indoor Unit

Front panel

FILE NO. SVM-06027

2. CONSTRUCTION VIEWS

60

6

Knock out system

Air inlet

Air filter

Heat exchanger

790

275

Air outlet

120 80

590

Hanger

64

218

60

6

48

Knock out system

48

53

Drain hose (0.54m)

Hanger

45

Minimum
distance
to ceiling

275

1

7

0

o

r m

o

re

320

620

235 235

215 215

re

Minimum
distance
to ceiling

o
r m

o
5
6

Hanger

− 5 −

Connecting pipe (0.43m)
(Flare ∅6.35)

Connecting pipe (0.33m)

(Flare ∅12.7)

Hanger

Hanger

150150 160160

Installation plate outline

Center line

For stud bolt
(∅ 8~∅10)

For stud bolt (∅6)

26

4519040

Minimum
distance
to ceiling

1

7

0

o

r m

o

re

32

9090

160

57 18

Wireless remote control

2.2. Outdoor Unit

600

50

36

321

307

A detail Drawing (Back leg)

R5.5

R

Ø

15

6 hole

28

86

321

Ø

25 Drain outlet

FAN-GUARD

436

Ø

FILE NO. SVM-06027

A

109 124

307

321

Ø

2

-

Ø

11 x 14

(For 8 -

Ø

Hole

10 anchor bolt)

Ø

6 hole

11x14 hole

Ø

B Detail Drawing (Front leg)

36
50

R

15

COVER-PV

Z

290

550

275

321
342

Electrical part cover

Liquid side
(Flare 6.35)

Ø

Gas side
(Flare 12.7)

Ø

5

4

S

ervice port

Z View

9060090

69

129

84

100 or more

321

100 or more

Air outlel

600

Air intlel

600 or more

− 6 −

600 or more

4x 11 Long holes(For 8- 10 anchor bolt)

Ø

Ø

Ø

3. WIRING DIAGRAM

3-1. RAS-13GKHP-ES2 / RAS-13GAH-ES2

FILE NO. SVM-06027

BRW(L)

L

BLU(N)

N

GRN & YEL

SINGLE PHASE

220-240V~, 50Hz

BLK
P04

T02

C.T.

131

CN27

73°Cx2

THERMAL FUSE

Louver

Motor

CN25

PNK

SG01

DSA

VARISTOR

BLK

R22

3

4

PNK

112

RY01

2

CN04

T6.3A 250VAC

FUSE F01

MAIN P.C. BOARD

YEL

54321

54321

C01

R21

VARISTOR

YEL

CN07

YEL

YEL

WHI

DC5V

L01

WP-003

RY04RY03

CR01

150°C

1 1

3

CN03

112

BLK

2

BLK

THERMO

SENSOR (TA)

CN01

112

HEAT EXCHANGER

2

SENSOR (TC)

BLK

BLK

CR02

2 2
3 3
4 4
5 5
6 6

INFRARED RAYS RECEIVE

AND INDICATION PARTS

345

1

2

345

1

2

BLU

BLU

BLU

345

2

345

2

Voltage

Regulator

IC03

BLU

R319

R26

BLU

1

1

C02

CR03

C15

5

CN10

BLK

5

GRY

YEL

BRW

RED

WHI

789

6

789

6

BLU

BLU

789

6

789

6

Micro

Power

Module

R25

R27

3 1
3 1

10

11

10

11

BLU

BLU

BLU

10

11

10

11

CN14

DC12V

+

DB01 C63

CN11

1 2 3
1 2 3

WHI

INDOOR
TERMINAL
BLOCK

OUTDOOR
TERMINAL

BLOCK

COMPRESSOR

BLK

WHI

2

1 4

(L)2(N)

1

BLK

SOLENOID COIL

RED

RED

RED

PNK

WHI

CAPACITOR

BLU

CAPACITOR

RED

3

3

BLU

FAN
MOTOR

BLU

4

WHI

AC FAN MOTOR

GRN&YEL

INDOOR

OUTDOOR

CHASSIS

BLK

− 7−

Heat Exchanger
Sensor (TC)

Thermo Sensor (TA)

L

L
N

N

SINGLE PHASE

220-240V~, 50Hz

3-2. RAS-13GKP-ES2 / RAS-13GA-ES2

Infrared rays receiver
and indication parts.

BRW (L)

BLU (N)

GRN&YEL

CN01

121

CN03

121

CN25

CN14

2

2

1
1

BLU

1
1

2

BLU

2

43
432

BLU

BLU

432
43

F01

T6.3 A

250 VAC

R21 R22

5
5

BLU

5

C15

6
6

BLU

3

6
6587

8

7

10

9 11

8

7

10

11

9

BLU

BLU

BLU

BLU

WHI

8

7

10

11

9

10

11

9

4

RY01

SG01

L01

2

2

1

4

3

DSA

C01

BLK

P04

RED

TRANS (T T-10)

WHI

113

CN05 CN06

3

DB50

C50

+

IC03

R46

BLU

113

Regulator

circuit

R47

R48

FILE NO. SVM-06027

GRY

3

MCC-920

CR03

D38

DC 12 V

DC 5 V

C58

CN07
1
2
3
4
5

CN11

1
2
3

CN10

5

3

1

WHI

1

YEL
YEL
YEL
YEL

1

2

2

3

3

4

4

5

5

1
2
3
4
5

Louver motor

YEL

1

GRY

2

BRW

3

WHI

5

BLK

3

RED

1

1

2

3

4

5

6 6

150 C
1
2
3
4
5

Indoor FAN motor

INDOOR
TERMINAL

BLOCK

OUTDOOR

TERMINAL

BLOCK

BLK

BLK

CN31

BLK

1

1(L)

FAN MOTOR

RED

WHI

2(N)

112

2

PNK

TEMP FUSE

73 C

CN04

PNK

GRN&YEL

2

INDOOR

OUTDOOR

CHASSIS

RED

CAPACITOR

RED

WHI

COMPRESSOR

PNK
WHI

CAPACITOR

− 8 −

3-3. RAS-13NKHP-AS2 / RAS-13N2AH-AS2

FILE NO. SVM-06027

BRW(L)
BLU(N)

GRN & YEL

SINGLE PHASE

220-240V~, 50Hz

BLK
P04

T02

C.T.

131

CN27

73°Cx2

THERMAL FUSE

Louver

Motor

CN25

PNK

SG01

DSA

VARISTOR

BLK

R22

3

4

PNK

112

RY01

2

CN04

T6.3A 250VAC

FUSE F01

MAIN P.C. BOARD

YEL

54321

54321

C01

R21

VARISTOR

YEL

CN07

YEL

YEL

WHI

DC5V

L01

WP-003

RY04RY03

CR01

150°C

1 1

3

CN03

112

BLK

2

BLK

THERMO

SENSOR (TA)

CN01

112

HEAT EXCHANGER

2

SENSOR (TC)

BLK

BLK

CR02

2 2
3 3
4 4
5 5
6 6

INFRARED RAYS RECEIVE

AND INDICATION PARTS

345

1

2

345

1

2

BLU

BLU

BLU

345

2

345

2

Voltage

Regulator

IC03

BLU

R319

R26

BLU

1

1

C02

CR03

C15

5

CN10

BLK

5

GRY

YEL

BRW

RED

WHI

789

6

789

6

BLU

BLU

789

6

789

6

Micro

Power

Module

R25

R27

3 1
3 1

10

11

10

11

BLU

BLU

BLU

10

11

10

11

CN14

DC12V

+

DB01 C63

CN11

1 2 3
1 2 3

WHI

INDOOR
TERMINAL
BLOCK

OUTDOOR
TERMINAL

BLOCK

COMPRESSOR

BLK

WHI

2

1 4

(L)2(N)

1

BLK

SOLENOID COIL

RED

RED

RED

PNK

WHI

CAPACITOR

BLU

CAPACITOR

RED

3

3

BLU

FAN
MOTOR

BLU

4

WHI

AC FAN MOTOR

GRN&YEL

INDOOR

OUTDOOR

CHASSIS

BLK

− 9 −

Heat Exchanger
Sensor (TC)

Thermo Sensor (TA)

BRW (L)
BLU (N)
GRN&YEL

SINGLE PHASE

220-240V~, 50Hz

3-4. RAS-13NKP-AS2 / RAS-13N2A-AS2

Infrared rays receiver
and indication parts.

CN01

121

CN03

121

CN25

CN14

2

2

2

1
1

BLU

BLU

BLU

1

2

1

250 VAC

INDOOR
TERMINAL

BLOCK

43
432

BLU

432
43

F01

T6.3 A

R21 R22

5
5

BLU

5

C15

6
6

BLU

6
6587

3

CN31

BLK

8

7

10

9 11

8

7

10

11

9

BLU

BLU

BLU

BLU

WHI

8

7

10

11

9

10

9

RY01

L01

2

2

3

WHI

1

BLK

11

P04

4

SG01

DSA

1

C01

4

GRN&YEL

2

RED

TRANS (T T-10)

WHI

113

CN05 CN06

3

DB50

C50

+

IC03

BLU

R47

R46

R48

GRY

113

3

Regulator

circuit

D38

INDOOR

CN04

FILE NO. SVM-06027

MCC-920

CR03

112

PNK

DC 12 V

DC 5 V

2

PNK

CN07
1
2
3
4
5

CN11

1
2
3

CN10

C58

5

3

1

TEMP FUSE

73 C

WHI

1

YEL
YEL
YEL
YEL

YEL

GRY
BRW

WHI

BLK

RED

1

2

2

3

3

4

4

5

5

1
2
3
4
5

1
2
3

5

3

1

Louver motor

150 C

1

1
2

2
3

3
4

4

5

5

6 6

Indoor FAN motor

OUTDOOR

TERMINAL

BLOCK

BLK

BLK

1(L)

RED

FAN MOTOR

2(N)

RED

WHI

CHASSIS

RED

CAPACITOR

COMPRESSOR

PNK
WHI

OUTDOOR

CAPACITOR

− 10 −

FILE NO. SVM-06027

4. SPECIFICATION OF ELECTRICAL PARTS

4-1. Indoor Unit (

No. Parts name Type Specifications

1 Fan motor (for indoor) SKF-220-20-4A-1 AC Motor with 150 C thermo fuse
2 Thermo sensor (TA-sensor) 10k at 25 C
3 Micro Power Module (M01)
4 Microcontroller unit (IC30) TMP87CM40AN
5 Heat exchanger sensor

(TC-sensor)
6 Line filter (L01) LC*SS11V-06270 27mH, 600mA
7 Bridge rectifier (DB01) D3SBA60 4A, 600 V
8 Capacitor (C63) KMH400VSSN47M22S 47mF, 400 V
9 Fuse (F01) BET 6.3A T6.3A, 250VAC

10 Varistor (R21, R22) TND15G561K 560 V
11 Resistor (R319) RF-2TK5R6 5.6 , 2 W
12 Louver motor MP24Z 12VDC
13 Relay (Comp., RY01) DI1U Rating 25A/AC250 V, 3-48VDC
14 Relay (Fan, RY03) G5NB-1A Rating 3A/AC250 V, 12VDC
15 Relay (Solenoide, RY04) G5NB-1A Rating 3A/AC250 V, 12VDC

RAS-13GKHP-ES2,

RAS-13NKHP-AS2)

µRM1260V

DC 390V, Secondary DC 12V

10k at 25 C

°

W

W

W

°

°

4-2. Outdoor Unit (RAS-13GAH-ES2, RAS-13N2AH-AS2)

No. Parts name

1 Compressor PA150X2C-4FT Winding resistance (Ω) C-R C-S

Fan motor

2

(for outdoor)

Running capacitor
3

(for fan motor)

Running capacitor
4

(for compressor)

Solenoid coil

(for 4-way valve)

5

(for Heat pump

model)

RS44B306U0214S AC 440V, 30µF

Type

Output (Rated) 1100W, 2poles, 1 phase, 220 − 240V, 50Hz

(at 20°C) 2.35 3.22

Output (Rated) 42W, 6poles, 1 phase, 220 − 240V, 50Hz

HF-240-42A or

WLF-240-42A

DS451155NPQB AC 450V, 1.5µF

STF-01AJ503H1

Winding resistance (Ω) Red-Black White-Black

(at 20°C) 176.2 or 188

AC 220 − 240V, 50Hz

Specifications

290.5 or 289

− 11 −

FILE NO. SVM-06027

4-3. Indoor Unit (RAS-13GKP-ES2, RAS-13NKP-AS2)

No. Parts name Type Specifications

1 Fan motor (for indoor) SKF- 220-20-4A-1 AC Motor with 150 C thermo fuse
2 Thermo sensor (TA-sensor) 10k at 25 C
3 Transformer
4 Microcontroller unit (IC30) TMP87CM40AN
5 Heat exchanger sensor

(TC-sensor)
6 Line filter (L01) *SS11V-06270 27mH, 600mA
7 Bridge rectifier (DB50) KBP06M/51 1.5A, 600 V
8 Capacitor (C50) PF1E222MNN1625 2200mF, 25 V
9 Fuse (F01) BET6.3A T6.3A, 250VAC

10 Varistor (R21, R22)

11 Louver motor MP24Z 12VDC
12 Relay (Comp., RY01) DI1U Rating 25A/AC250 V, 3~48VDC

TT-10

TND15G561K

W

10k at 25 C

W

560 V

°

°

°

4-4. Outdoor Unit (RAS-13GA-ES2, RAS-13N2A-AS2)

No. Parts name Type Specifications

Output (Rated) 1100W, 2poles, 1 phase, 220 − 240V, 50Hz

1 Compressor

Fan motor

2

(for outdoor)

Running capacitor

3

(for fan motor)

Running capacitor

4

(for compressor)

PA150X2C-4FT

WLF-240-30A

DS451155NPQB

RS44B306U0214S

Winding resistance (Ω) C-R C-S

(at 20°C)

Output (Rated) 30W, 6poles, 1 phase, 220 − 240V, 50Hz

Winding resistance (Ω) Red-Black White-Black

(at 20°C) 237

AC 450V, 1.5µF

AC 440V, 30µF

2.35

3.22

380

− 12 −

5. REFRIGERATION CYCLE DIAGRAM

5-1. RAS-13GKHP-ES2 / RAS-13GAH-ES2

RAS-13NKHP-AS2 / RAS-13N2AH-AS2

FILE NO. SVM-06027

Indoor unit

Cooling

0.39m
(Connecting pipe)
∅12.7

O.D.:12.7mm O.D.:6.35mm

Cooling

Heating

Heating

P

Packed valve

(∅12.7)

Heating

4-way valve

Cooling

Compressor

PA150X2C-4FT

Accumulator

Heat exchanger

Cross flow fan

T1

Capillary tube

∅1.5x1500l

0.49m

(Connecting pipe)

∅6.35

Packed valve

(∅6.35)

Capillary tube

∅1.0x400l

Heat exchanger

Refrigerant

R410A : 1.08 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 2.70 44.5 High 20/15 7/6

Heating Overload*1 3.12 ~ 3.77 52.0 ~ 56. 8 Low 27/− 24/18

Low temperature 2.20 35.0 High 20/− −10/−10

Standard 0.90 10.0 High

27/19

35/24

Cooling Overload 0.99 14.0 High 32/23 43/26

Low temperature 0.65 2.0 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.

− 13 −

5-2. RAS-13GKP-ES2 / RAS-13GA-ES2

RAS-13NKP-AS2 / RAS-13N2A-AS2

FILE NO. SVM-06027

Indoor unit

Cooling

0.39m
(Connecting pipe)
∅12.7

O.D.:12.7mm O.D.:6.35mm

Cooling

Packed valve

Cooling

P

(∅12.7)

Compressor

PA150X2C-4FT

Accumulator

Heat exchanger

Cross flow fan

T1

Packed valve

(∅6.35)

Capillary tube

∅1.7x700

0.49m
(Connecting pipe)
∅6.35

l

Heat exchanger

Refrigerant

R410A : 0.98 kg.

Cooling

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 0.80 10.0 High 27/19 35/24

Cooling Overload 1.04 15.0 High 32/23 43/26

Low temperature 0.72 2.0 Low 21/15 21/15

Note :

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

− 14 −

6. CONTROL BLOCK DIAGRAM

FILE NO. SVM-06027

6-1. RAS-13GKHP-ES2 / RAS-13GAH-ES2,

Main Unit Control Panel

Heat Exchange sensor

Thermo. Sensor

Current Sensor

(Compressor Current)

Infrared Rays Signal Reciver

Initiallizing Circuit

Clock Frequency
Oscillator Circuit

Power Supply

Circuit

Compressor

RAS-13NKHP-AS2 / RAS-13N2AH-AS2

M.C.U.

Functions

• Louver Control

•3-minutes Delay at Restart

for Compressor

•Motor Revolution Control

•Processing

(Temperature Processing)

•Timer

ON/OFF

Signal

Outdoor Fan

ON/OFF

Signal

4-Way Valve

ON/OFF

Signal

Louver

ON/OFF

Signal

Operation

Display

Timer

Display

Filter Sign

Display

Hi Power

Sign Display

PRE DEF.

Sign Display

Indoor Fan

Motor

220-240 V~, 50Hz

REMOTE CONTROL

Noise Filter Relay Driver, Louver Driver

Relay

RY01

Compressor 4-Way Valve

Remote Control

Operation ( )

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

Relay

RY03

Outdoor Fan Motor

Infrared Rays

Louver

Motor

Relay

RY04

ECO

Hi power

TIMER 1.3.5.9H

COMFORT SLEEP

QUIET

− 15 −

FILE NO. SVM-06027

6-2. RAS-13GKP-ES2 / RAS-13GA-ES2,

Main Unit Control Panel M.C.U.

Heat Exchange sensor

Thermo. Sensor

Infrared Rays Signal Reciver

Initiallizing Circuit

Clock Frequency
Oscillator Circuit

Power Supply

Circuit

RAS-13NKP-AS2 / RAS-13N2A-AS2

Functions

• Louver Control

•3-minutes Delay at Restart

for Compressor

•Motor Revolution Control

•Processing

(Temperature Processing)

•Timer

Compressor

ON/OFF

Signal

ON/OFF

Operation

Display

Timer

Display

Filter Sign

Display

Hi Power

Sign Display

Fan Only

Sign Display

Indoor Fan

Motor

Louver

Signal

220-240 V~, 50Hz

REMOTE CONTROL

Noise Filter Relay Driver, Louver Driver

Relay

RY01

Compressor, Outdoor Fan Motor

Infrared Rays

Remote Control

Operation ( )

Operation Mode Selection

AUTO, COOL, DRY, FAN ONLY

Temperature Setting

Fan Speed Selection

ON TIMER Setting

OFF TIMER Setting

Louver Auto Swing

Louver Direction Setting

Louver

Motor

ECO

Hi power

TIMER 1.3.5.9H

COMFORT SLEEP

QUIET

− 16 −

7. OPERATION DESCRIPTION

FILE NO. SVM-06027

7-1. Outline of Air Conditioner Control

This is a fixed capacity type air conditioner, which uses
AC motor for an indoor fan. The AC motor drive
circuit is mounted in the indoor unit. And electrical

parts which driving the compressor and the outdoor

fan motor, are mounted in the outdoor unit.

The air conditioner is controlled by the controller
mounted in the indoor unit. The controller operates all
components based on the commands transmitted from
the remote control and the feedback data of the sensor
is as follow:

• The temperature measurement at the air inlet of
the indoor heat exchanger by the indoor
temperature sensor

•The temperature measurement at the indoor
heat exchanger by the indoor heat exchanger
temperature sensor

• Indoor fan motor operation control

• Louver motor control

• LED display control

• Outdoor fan motor operation control

• 4-WAYS-VALVE operation control

(Heat pump model only)

• Compressor operation control

• Receiving the information of the operation

status and judging the information or the
indication of errors

Table 7-1-1

7-1-1. 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 microcontroller, 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 [SWING] button is pressed again,
it stops swinging.

7-1-2. Indoor fan control (AC Fan motor)

(1) The indoor fan is operated by the stepless speed

change AC motor.

(2) For air flow level, speed of the indoor fan motor is

controlled in five steps (LOW, LOW

+

, MED, MED
and HIGH). If AUTO mode is selected, the fan
motor speed is automatically controlled by the
difference between the preset temperature and
the room temperature.

LOW

=

LOW+MED

+

2

MED+=

MED+HIGH

2

+

OPERATION

MODE

RAS-13GKP Series
RAS-13NKP Series

Model

RAS-13GKHP Series
RAS-13NKHP Series

FAN TAP

Cooling UH H M L L- UL SL

Fan only
Dry

Heat UH H M L L- UL SL

rpm

Air flow volume (m3/h)

rpm

Air flow volume (m3/h)

1350

650

1350 1300 1150 1100 1050 1020 950 900 850 700

650 630 550 520 490 470 430 400 370 280

H M L L-

M L L- UL SL

1300 1150 1100 1050 1000 950 900 850

630 550 520 490 460 430 400 370

800

340

800

340

750

310

− 17 −

700

280

550
190

FILE NO. SVM-06027

7-2. Description of Operation Circuit

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

blinks. This means that the power supply is on.

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

7-2-1. 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. 7-2-1. When
[FAN] button is set to LOW, LOW
HIGH, the motor operates with a constant air flow.

°C

+3
+2.5
+2

-

+1.5
+1
+0.5

(Room temp.) (Preset temp.)

Preset
temp.

0

(Preset temp.: 22°C)

NOTE :

*1: The values marked with *1 are calculated and

controlled by the difference in motor speed
between M+ and L-.

(2) The Hi POWER, ECO and COMFORT SLEEP

operation cannot be set.

Fig. 7-2-1 Setting of air flow [FAN:AUTO]

+

, MED, MED+ or

M+

*1
*1
*1

-

L

7-2-2. 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 on the remote control are
controlled as shown in Fig. 7-2-2.

°C

ON ON

OFF OFFOFF ON

4-way valve

Compressor

Outdoor fan

OPERATION

-

(Room temp.) (Preset temp.)

Preset
temp.

0.5

0

Fig. 7-2-2

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

motor operates as shown in Fig. 7-2-3. When
[FAN] button is set to LOW, LOW

+

, MED, MED+ or

HIGH, the motor operates with a constant air flow.

°C

(Preset temp.)

−

(Room temp.)

Preset
temp.

+3
+2.5
+2
+1.5
+1

+0.5

0

-0.5

M+

*1

*1
*1

L

-

NOTE :

*1: The values marked with *1 are calculated and

controlled by the difference in motor speed
between M+ and L-.

display

- 18-

Fig. 7-2-3 Setting of air flow [FAN:AUTO]

FILE NO. SVM-06027

7-2-3. 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 on the remote control are
controlled as shown in Fig. 7-2-4.

°C

ON:6min.

-

(Room temp.) (Preset temp.)

Preset
temp.

+3

+2

+1

ON:6min.

OFF:4min.

ON:5min.

OFF:5min.

OFF

0

Compressor

OFF

ON:5min.

OFF

4-way valve

OFF:4min.

OFF:5min.

Outdoor fan

Fig. 7-2-4

7-2-4. Heating operation *Heat pump model only

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

ON

display

OPERATION

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

operation display on the remote control are
controlled as shown in Fig. 7-2-6.

°C

Preset
temp.

0

-0.5

-

(Room temp.) (Preset temp.)

ON

OFF

ON

Compressor

4-way valve

Fig. 7-2-6

ON

OFF

ON

Outdoor fan

display

OPERATION

(2) The microcontroller 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. 7-2-5.

Room temp.

Preset temp.+1
Preset temp.

Compressor
Outdoor fan

Indoor fan

ON ON ON ON

OFF OFF OFF

L *SL SLLL SL L

*

Super Low

Fig. 7-2-5

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

only.

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

motor operates as shown in Fig. 7-2-7. 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, *2 : The values marked with *1 and *2 are

calculated and controlled by the difference in
motor speed between M+ and L.

Fig. 7-2-7 Setting of air flow [FAN:AUTO]

(4) The Hi POWER, ECO, COMFORT SLEEP and

QUIET operations cannot be set.

- 19 -

FILE NO. SVM-06027

(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. 7-2-8 and Table 7-2-1.

°C

453434

33

323121

20

*2

A+8

A+8

A− 4

A− 4

*6 *5

Indoor heat exchanger temperature

AUTO

*4

*3

SL

SL*1

Stop

Manual
(One of 5 steps)

-

H (Up to

L
seting speed)

Fig. 7-2-8 Cold draft preventing control

NOTES :

*1: The fan stops for 2 minutes after thermostat-OFF
*2: A is 24°C when the preset temperature is 24°C or

more and A is the preset temperature when it is

under 24°C.
*3: SL means Super Low.
*4: Calculated from difference in motor speed

between SL and H.

7-2-5. 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. 7-2-9. 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. 7-2-9.

°C

Cooling operation

The louver moves to the position same
as Hi POWER operation.

+4

Cooling operation

0

Fan only operation

-

1

-

*5 and *6:

Fan *5 *6
speed Starting period Stabilized period

·

AUTO Up until 12 minutes

Manual Room temperature
(L H) < Preset temperature

-

·

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

·

·

 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

Table 7-2-1

-

3.5°C

Heating operation

Heating model

(Room temp.) (Preset temp.)

Cooling model

.

Fig. 7-2-9

-

20

-

FILE NO. SVM-06027

7-3. 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.

7-4. High-Temperature Limit Control

*Heat pump model only

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

Heat exchanger
temperature

(°C)

6

2

Compressor Outdoor fan

ON

Less than 2°C continues

for 5 minutes

OFF

(3) Heating operation (Heat pump model)

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).

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

only operation.

-

21

Fig. 7-5-1

-

FILE NO. SVM-06027

7-6. Defrost Operation *Heat pump model only

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.

D

<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 7.5A 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 [ ] 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

xchanger temp

Indoor heat e

- Room temp

A

B

C

Cumulative
compressor
operating time

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.)

minutes

40

Heating

minutes

40

Defrost

Heating

minutes

40

Defrost

Heating

minutes

40

Defrost

Heating

Defrost

Max 6 minutes

1 cycle

Fig. 7-6-2

10 minutes

-

22

-

7-7. Current Limit Control *Heat pump model

only

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

11A I4

10A I3

FILE NO. SVM-06027

Compressor Outdoor fan
More than I4 continues for 3 seconds

OFF

More than I3 continues for 5 minutes

OFF

ON

(2) Current limit control (Heating operation)

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

Input current

11A I4

10A I3

6A I2

5A I1

Remark :

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

Fig. 7-7-1

Compressor Outdoor fan

More than I4 continues for 3 seconds

OFF

More than I3 continues for 5 minutes

OFF

ON OFF

ON

Fig. 7-7-2

-

23

-

FILE NO. SVM-06027

7-8. Auto Restart Function

The indoor unit is equipped with an automatic
restarting function which allows the unit to restart
operating with the set operating conditions in the event
of 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.

7-8-1. How to set auto restart function

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

When the unit is on standby (Not operating)

Operation Motions

Push [RESET] button for more The unit is on standby.
than three seconds.

¯

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

¯

RESET

0

The unit beeps three times The lamp changes from
and continues to operate. green to orange.

3S

If the unit is not required to operate at this time, push [RESET]

RESET button

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

After approx. three seconds,

When the unit is in operation

Operation Motions

Push [RESET] button for more The unit is in operation. The green lamp is on.
than three seconds.

¯

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

After approx. three seconds,

¯

RESET

0

The unit beeps three times

3S

If the unit is required to operate at this time, push [RESET]

RESET button

While this function is being set, if the unit is in

·

operation, the orange lamp is on.

·

This function can not be set if the timer operation
has been selected.

·

When the unit is turned on by this function, the

button once more or use the remote control to turn it on.

·

While the filter check lamp is on, the
[RESET] button has the function of filter
reset button.

louver will not swing even though it was swinging
automatically before shutting down.

-

24

-

7-8-2. How to cancel auto restart function

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

When the unit is on standby (Not operating)

Operation Motions

Push [RESET button for more The unit is on standby.
than three seconds.

¯

The unit starts to operate. The orange lamp is on.

¯

RESET

0

The unit beeps three times The lamp changes from
and continues to operate. orange to green.

3S

¯

FILE NO. SVM-06027

After approx. three seconds,

RESET button

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

When the unit is in operation

Operation Motions

Push [RESET] button for more The unit is in operation. The orange lamp is on.

If the unit is not required to operate at this time, push [RESET]

than three seconds.

¯

The unit stops operating. The orange lamp is turned off.

After approx. three seconds,

¯

RESET

0

The unit beeps three times

3S

If the unit is required to operate at this time, push [RESET]

RESET button

·

While this function is being set, if the unit is in

button once more or use the remote control to turn it on.

7-9. Filter Check Lamp

operation, the orange lamp is on.

When the elapsed time reaches 1000 hours, the filter

7-8-3. Power failure during timer operation

check lamp indicates. After cleaning the filters, turn off
the filter check lamp.

When the unit is in Timer operation, if it is turned off
because of power failure, the timer operation is

7-9-1. How to turn off filter check lamp

cancelled. Therefore, set the timer operation again.

Push [RESET] button on the indoor unit.

Note:

If [RESET] button is pushed while the filter
check lamp is not indicating, the indoor unit will start
the Automatic Operation.

- 25-

FILE NO. SVM-06027

7-10. Self-Cleaning function

Self-Cleaning function is designed to reduce humidity that causes mold to form inside the air conditioning unit.
This advanced, efficient system reduces moisture in the coil. When air conditioner is turned off, the internal fan
activates and dries the moisture in the coil for 20 minutes, then it turns off automatically.

Operation display ON OFF OFF

FCU fan

FCU louver OPEN CLOSE CLOSE

Timer display

Compressor

CDU fan ON or OFF

rpm is depend on presetting. rpm is SL speed.

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

8

Self-Cleaning mode

operate 20 mins.

Turn off by remote controller or

timer-off function.

ON

OFF OFF

OFF OFF

8

Automatically turn-off.

• The Self-Cleaning function is set as default at ex-factory.

• Self-Cleaning operation can stop manually by press [

7-

10-1. How to cancel 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. The OPERATION
display will show in orange color (When AUTO­RESTART is ON) or green color (When AUTO­RESTART is OFF).

• Hold down the [

RESET] button for more than
20 seconds. (The air conditioner will stop suddenly
when the [

RESET] button is pressed but keep
holding it continue. Then 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.

] button of the remote control two more time.

10-2. How to set Self-Cleaning function.

7-

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

• Press [

RESET] button one time or use remote
control to turn on air conditioner. The OPERATION
display will show in orange color (When AUTO­RESET is ON) or green color (When AUTO­RESTART is OFF).

• Hold down the [

RESET] button for more than
20 seconds. (The air conditioner will stop suddenly
when the [
holding it

RESET] button is pressed but keep

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.

OFF

ON or OFF

-

Operation time

Remarks

• Per setting of Self-Cleaning function above, AUTO­RESTART function had been cancelled. To set
AUTO-RESTART again, please follow item 7-

8-1.

R ES E T

Remarks

• Per setting of Self-Cleaning function above, AUTO­RESTART function had been cancelled. To set
AUTO-RESTART again, please follow item 7-

– 26 –

8-1.

FILE NO. SVM-06027

7-11. 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.

When the [QUIET] button is pressed, the fan of the
indoor unit will be restricted the revolving speed at

speed L

again (cancel Quiet mode).
Remarks :

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

2. Quiet mode is appropriate to work with less

-

until the [QUIET] button is pressed once

cooling load and less heating load condition.
Because of the fan speed L- may cause not
enough the cooling capacity or heating capacity.

7-12. COMFORT SLEEP mode

The principles of comfort sleep mode are:

• Quietness for more comfortable.

• Save energy by changing room temperature

automatically.

• The air condition can shut down by itself

automatically.

7-12-1. Cooling mode

• The fan speed of indoor unit operates automatically,

it relates with the compressor's operation.

Compressor’s Operation Fan Speed

ON L

OFF SL

• The preset temperature will increase 1°C after the

Comfort sleep mode has operated for 1 hour and
the temperature will increase another 1°C 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 select the hours.
(1hr, 3hr, 5hr or 9hr)

• If the [COMFORT SLEEP] button is pressed again

means cancel comfort sleep mode.

7-12-2. Heating mode

• The fan speed of indoor unit operates automatically,

it relates with the compressor's operation.

Compressor’s Operation Fan Speed

ON L

OFF SL

-

-

Remarks:

1. Comfort sleep mode will not operate in dry mode

and fan only mode.

2. Comfort sleep 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.

• The preset temperature will drop down 1°C after the

comfort sleep mode has operated for 1 hour and the
temperature will decrease another 1°C after the
comfort sleep mode has operated for 2 hour. (The

value of the preset temperature on the remote control.
dose not change.)

• Press the [COMFORT SLEEP] button to choose the

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

• If the [COMFORT SLEEP] button is pressed again

means cancel comfort sleep mode.

-

27

-

FILE NO. SVM-06027

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 AIR CONDITIONER USES THE NEW HFC REFRGERANT (R410A), WHICH DOES NOT DESTROY
THE OZONE LAYER.

R410A refrigerant is apt to be affected by impurity such as water, oxidizing membranes, and oils because the
pressure of R410A refrigerant is approx. 1.6 times of refrigerant R22. As well as the adoption of this new
refrigerant, refrigerating machine oil has also been changed. Therefore, during installation work, be sure that
water, dust, former refrigerant, or refrigerating machine oil does not enter into the refrigerating cycle of a
new-refrigerant air conditioner.
To avoid mixing refrigerant and refrigerating machine oil, the sizes of charging port connecting sections on
the main unit are different from those for the conventional refrigerant, and different size tools are also
required. Accordingly, special tools are required for the new refrigerant (R410A) as shown below. For
connecting pipes, use new and clean piping materials with high-pressure withstand capabilities, designed for
R410A only, and ensure that water or dust does not enter. Moreover, do not use any existing piping as its
pressure withstand may be insufficient, and may contain impurities.

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.

New Refrigerant Air conditioner Installation

To Disconnect the Appliance from the Main Power Supply

− 28 −

FILE NO. SVM-06027

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 instruc-

tions for proper installation.

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.

− 29 −

8-2.Installation Diagram of Indoor and Outdoor Units

170 m

m

or m

ore

Hook

65 mm or more

1 Installation

plate

FILE NO. SVM-06027

For the rear left and left
piping

Wall

ore installing the

Bef

wireless remote control

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

2

Wireless remote control

Cover

3

Batteries

(A

tta

c

h

to

4Sasa-Zeolite

Vitamin C filter

2

Wireless remote
control

A

ir

f

ilt

e

th

e

fr

o

n

t p

a

n

6Bio-enzyme &

Gingko filter

H

r

e

l.)

8

Pan head wood screw

4

Remote control holder

o

o

k

170 mm or more

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

Shield
pipe

Do not allow the drain hose
to get slack.

Cut the piping hole
sloped slightly

Make sure to run the drain
hose sloped downward.

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

100 mm or more

o

m

m

0

0

6

e

r

o

m

r

Vinyl tape
Apply after carrying
out a drainage test.

100 mm or more

600 mm or more

Saddle

Extension
drain hose

(Not available,
provided by installer)

600 mm or more

Right

Rear right

Rear left

Bottom right

Bottom left

Insulate the refrigerant
pipes separately with
insulation, not together.

6 mm thick heat resisting
polyethylene foam

Left

– 30 –

8-3. Installation

8-3-1. Optional installation parts

FILE NO. SVM-06027

Part

Code

Parts name

Refrigerant piping
Liquid side : ∅6.35 mm

A

Gas side 12.7 mm

:

∅

Pipe insulating material

B

(polyethylene foam, 6 mm thick)

Putty, PVC tapes

C

<Fixing bolt arrangement of outdoor unit>

320 mm

32.5 mm

7 mm

108 mm

86 mm

Air outlet

3

600 mm

0

125 mm

Air inlet

102 mm

90 mm

Drain outlet

Q'ty

One

each

1

One

each

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.

• If it is necessary to drain the defrost water, attach 9 drain nipple and 10 cap water proof to the

bottom plate of the outdoor unit before installing it.

− 31 −

8-3-2. Accessory and installation parts

FILE NO. SVM-06027

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

Sasa

-Zeolite Vitamin C filter x 1

6

Bio-enzyme & Gingko filter x 1

Part

No.

Part name (Q'ty)

7

Mounting screw

8

Pan head wood screw
∅3.1 x 16 s x 2

9

Drain nipple* x 1

!

Cap water proof* x 2

(For Heat pump model only)

The part marked with asterisk (
outdoor unit.

∅4 x 25 s x 6

(For Heat pump model only)

*) is packaged with the

− 32 −

FILE NO. SVM-06027

8-3-3. Installation/Servicing tools

<Changes in the product and components>

In the case of an air conditioner using R410A, in order to prevent any other refrigerant from being charged
accidentally, the service port diameter of the outdoor unit control valve (3 way valve) has been changed. (1/2
UNF 20 threads per inch)

•

 In order to increase the pressure

size of opposite side of flare nuts have been changed. (for copper pipes with nominal dimensions 1/2 and 5/8)

New tools for R410A Applicable to R22 model Changes

Gauge manifold As pressure is high, it is impossible to measure by

Charge hose In order to increase pressure withstand strength,

Electronic balance As pressure is high and gasification speed is fast,
for refrigerant charging it is difficult to read the indicated value by means

withstand

strength of the refrigerant piping, flare processing diameter and

means of conventional gauge. In order to prevent
any other refrigerant from being charged, each
port diameter has been changed.

hose materials and port size have been changed
(to 1/2 UNF 20 threads per inch).
When purchasing a charge hose, be sure to
confirm the port size.

of a charging cylinder, as air bubbles occur.

Torque wrench
(nominal dia. 1/2, 5/8) Incidentally, a common wrench is used for nominal

Flare tool By increasing the clamp bar's receiving hole,
(clutch type) strength of spring in the tool has been improved.

Gauge for projection Used when flare is made with a conventional flare
adjustment tool.

Vacuum pump adapter Connected to conventional vacuum pump. It is

Gas leakage detector Exclusive for HFC refrigerant.

• Incidentally, the "refrigerant cylinder" comes with the refrigerant designation (R410A) and protector coating in
the U. S ARI specified rose color (ARI color code: PMS 507).

• Also, the "charge port and packing for refrigerant cylinder" require 1/2 UNF 20 threads per inch
corresponding to the port size of the charge hose.

The size of opposing flare nuts has been increased.

diameters 1/4 and 3/8.

necessary to use an adapter to prevent vacuum
pump oil from flowing back to the charge hose.
The charge hose connecting part has two ports:
one for conventional refrigerant (7/16 UNF 20
threads per inch) and one for R410A. If the
vacuum pump mineral oil mixes with R410A,
a sludge may occur and damage the equipment.

– 33–

62

85

82.5

170

FILE NO. SVM-06027

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.

Pipe
hole

∅

65 mm

The center of the pipe
hole is above the arrow.

100 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

Indoor unit

(Side view)

7 m

°

75

Reception
range

Remote
control

(Top view)
Indoor unit

Reception
range

* : Axial distance

Fig. 8-4-1

5 m

45

°

5 m

°

45

Remote control

7 m

*

Pipe hole

Hook

Indoor unit

Fig. 8-4-3

− 34 −

FILE NO. SVM-06027

<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

77

7 Mounting

77

screw
∅4 x 25

ss

s

ss

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.

RAS-13GKHP-ES2

Model

RAS-13GKP-ES2

RAS-13NKHP-AS2

RAS-13NKP-AS2

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.

Power source 50 Hz, 220 − 240 V Single phase

Maximum
running current

Plug socket &

fuse rating

Power cord 1.3 mm2 or more

12A

16A

− 35 −

1

2

3

4

1

2

FILE NO. SVM-06027

<How to connect the connecting cable>

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.

For Cooling

Connecting
cable

about 15 cm

Screw

Cord clamp

Screw

1

2

Connecting cable

Screw

Terminal
cover

Fig. 8-4-7

Earth line

60 mm

10 mm

10 mm

50 mm

Stripping length of the connecting cable

Terminal block

Earth line

For Heat pump

Connecting

cable

about 15 cm

Screw

Stripping length of the connecting cable

Terminal

cover

Screw

10 mm

Cord clamp

Screw

Fig. 8-4-5

80 mm

70 mm

10 mm

0 mm

1

1

2

50 mm

4

3

Connecting cable

Earth line

Terminal block

Earth line

Fig. 8-4-8

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. 8-4-9

Fig. 8-4-6

− 36 −

FILE NO. SVM-06027

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

− 37 −

Fig. 8-4-15

FILE NO. SVM-06027

<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)

270 mm

170 mm

R 30 mm (Use polisin (polyethylene)

43 mm

core or the like for bending pipe.)

0

8

Liquid side

Gas 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

− 38 −

FILE NO. SVM-06027

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.

Fig. 8-4-

drain hose into

a wavy shape.

19

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

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

Fig. 8-4-

Extension drain hose

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 15m

•

• An allowable height level is up to 6m.

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

− 39 −

Strong

wind

Fig. 8-5-1

FILE NO. SVM-06027

8-5-2. Refrigerant piping connection

1. Cut the pipe with a pipe cutter.

90°

Obliquity

Roughness Warp

Fig. 8-5-2

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

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

A

Die

Pipe

Fig. 8-5-3

Rigid (Clutch type)

Outer dia. R410A Conventional

of copper pipe tool used tool used

(Unit : N·m)

Outer dia.

∅

6.35

16 to 18 (1.6 to 1.8 kgf·m)

∅

12.70 50 to 62 (5.0 to 6.2 kgf·m)

Tightening torque

• Tightening torque of flare pipe connections

The operating pressure of R410A is higher than that of
R22. (Approx. 1.6 times). It is therefore necessary to
firmly tighten the flare pipe connecting sections (which
connect the indoor and outdoor units) up to the
specified tightening torque. Incorrect connections may
cause not only a gas leakage, but also damage to the
refrigerant cycle.

Flare at indoor unit side

6.35 0 to 0.5 1.0 to 1.5

12.70 0 to 0.5 1.0 to 1.5

Imperial (wing nut type, conventional tool)

Outer dia.

of copper pipe

R410A

6.35 1.5 to 2.0

12.70 2.0 to 2.5

<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.

Externally
threaded side

Use a wrench to secure.

CAUTION

Flare at outdoor unit side

Fig. 8-5-4

Mark line

Fig. 8-5-5

Flare nutHalf union

Internally
threaded side

Use a torque wrench to tighten.

Fig. 8-5-6

•

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)

− 40 −

FILE NO. SVM-06027

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. (If oil inside of the vacuum pump
enters into the air conditioner, which use R410A,
refrigeration cycle trouble may result.)

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
(∅12.70 mm)

50 to 62 N·m
(5.0 to 6.2 kgf·m)

Liquid side 16 to 18 N·m
(∅6.35 mm) (1.6 to 1.8 kgf·m)

Service port

9 to 10 N·m
(0.9 to 1.0 kgf·m)

Hexagonal wrench
is required.

mm

4

Fig. 8-5-8

Compound pressure gauge

-101kPa (-76cmHg)

Handle Lo

Charge hose

(For R410A only)

Connecting pipe

Packed valve at gas side

Service port
(Valve core (Setting pin))

Packed valve at liquid side

Fig. 8-5-7

Pressure gauge

Manifold valve

Handle Hi
(Keep full closed)

Charge hose
(For R410A only)

Vacuum pump
adapter for
counter-flow
prevention
(For R410A only)

Vacuum

pump

− 41 −

Selector Switch

LED Assembly

FILE NO. SVM-06027

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-13GAH-ES2, RAS-13N2AH-AS2

Terminal block

Terminal

screw

Connecting
cable

Screw

2(N)

1(L)

3

4

Cord clamp

10 mm

100 mm

Earth line

10 mm

50 mm

Fig. 8-5-9

Earth

line

8-6. How to Set Remote Control Selector

Switch

When two indoor units ae installed in seperated rooms,
there is no need to change the selector switch.

<Remote control selector switch>

• When two indoor units are installed in the same
room or the adjacent two rooms, they may be
controlled simultaneously with a single remote
control. To prevent this, set either unit and its
remote control to B setting. (Both units are set to A
setting before shipment.)

• The remote control signal is not recived when the
indoor unit setting is different from the remote
control one.

1. Set the remote control selector switch with the
indoor unit.

1) Turn the circuit breaker of the main power switch off
before setting the selector switch.

2) Remove the Air inlet grille and Front panel. (Refer to
page 59, 10-1)

3) Select the terminal of selector switch from
[A position] to [B position].

For RAS-13GA-ES2, RA-S13N2A-AS2

Terminal block

10 mm

100 mm

Earth line

10 mm

4

0 mm

Terminal
screw

Connecting
cable

Screw

1(L) 2(N)

Cord clamp

Fig. 8-5-10

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.

Earth
line

Fig. 8-6-1

NOTE

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

more)

2

or

− 42 −

FILE NO. SVM-06027

2. Set the remote control selector switch with the
remote control

[B] is indicated on the liquid crystal display when
setting remote control selector switch to B. [A] is
not indicated on the display even if the selector
switch is set to A.

1) Load the remote control with the batteries.

2) Press the [CHECK] button using something with
sharp point. (The preset temperature on the remote
control changes to [00].)

3) Press the [MODE] button while pressing the
[CHECK] button, [B] is indicted at the right of the
present temperature display.

• To reset the switch to the [A] setting, press the
[MODE] button again while pressing the [CHECK]
button.

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.)

[MODE] button

[CHK] button

Fig. 8-6-2

3. Confirm that the indoor unit can operate with
the new setting.

RESET

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.

 − 43 −

9. TROUBLESHOOTING CHART

FILE NO. SVM-06027

9-1. Troubleshooting Procedure

Follow the details of 9-2. Basic Check Items.

If there is no troub le 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.

9-2-2. Incorrect cable connection between Indoor

and outdoor units

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 [ ]

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

button is pressed, the lamp stops b

linking.

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 PRE-DEF. lamp is indicated when the

Heating operation starts.

6 The outdoor fan motor stops in the Heating

operation.

7 The compressor is not turned on even though

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

8 The operation mode changes in the

Automatic operation.

9 The Fan only operation continues in the

Automatic operation.

10 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.

The PRE-DEF. lamp is indicated during the Defrosting
operation or if the indoor heat exchanger temperature is low when
the Heating operation starts. At this time, the indoor fan motor
stops to prevent cold air from blowing in the room.

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.

− 44 −

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

FILE NO. SVM-06027

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.

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)

G OPERATION, TIMER and PRE-DEF.

(or FAN ONLY for cooling only model) 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.

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

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.

− 45 −

9-4. Self-Diagnosis by Remote Control

(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 control is set to the service

mode, the indoor controller diagnoses the
operation condition and indicate 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 blink at 5Hz and it

will beep for 10 seconds (Pi, Pi, Pi....). The timer

lamp usually blinks (5Hz) during the self-diagnosis.

9-4-1. How to use remote control in service mode

FILE NO. SVM-06027

(1) Press [CHK] button with a tip of pencil to set the

remote control to the service mode.

• “00” is indicated on the display of the remote
control.

• The timer lamp on the indoor unit blinks
continuously. (5 times per 1 sec.)

(2) Press [TIMER 8] button.

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

00

01

•

Check the unit with all 35 check codes (00 to 22).
as shown in Table 9-4-1.

• Press [TIMER 9] button to change the check
code backwards.

If there is a fault, the indoor unit will beep for 10
seconds (Pi, Pi, Pi...).
Note the check code on the display of the remote
control.

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

• All lamps on the indoor unit will blink. (5 times
per 1 sec.)

(3) Press [CLR] button. After service finish for clear

service code in memory.

• “7F” is indicated on the display of the remote
control.

1d

02

1E

22

•

Alphanumeric characters are used for the check code.

is 5. is 6.
is A. is B.
is C. is D.

* This illustration in only for Heat pump model.

For Cooling only model, there is not the ( ) symbol.

(4) Press [ ] button to release the service

mode.

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

− 46 −

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-06027

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.

– 47 −

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.?

Heat pump Model

Shut off the power supply

from AC outlet once and

turn it on after 5 seconds.

FILE NO. SVM-06027

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 of the remote

NO

NO

YES

Refer to the paragraph

"Pre-check", or defective circuit

before power P.C. board block.

control?

YES

YES

YES

YES

NO NO

(No problem)

Parts (R21, R22, SG01,

C01, DB01, C02, C63,

M01) are defective.

Wrong wiring of

AC cord or connecting

cable is defective.

Does the CN14

connector the wrong

connecting?

YES

Does the transmission

indicator of remote

control flash normally

and transmit certainly?

YES

NO

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 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

NO NO

supply once, and

disconnecting the motor

connector CN11*.

Check Resistance

of Pin 1 and 3

of Fan-motor

= 162Ω .

Replace Fan-motor

and P.C. board.

Replace P.C. board

− 48−

Cooling Model

Shut off the power supply

from AC outlet once and

turn it on after 5 seconds.

FILE NO. SVM-06027

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 C50 measured

DC12V ~ 15V?

YES

NO

Does the fuse

(F01) blow?

fuse blow?

NO

Does the OPERATION

lamp blink?

Does the power turn on

by pushing the [ ]

button of the remote

control?

NO

NO

YES

Refer to the paragraph

"Pre-check", or defective circuit

before power P.C. board block.

YES

YES

YES

NO NO

YES

Parts (R21, R22, SG01,

C15, C01, DB01, C50,

TT-10) 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 secondary

voltage of

transformer (TT-10)

measured DC10~16V?

YES 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 NO

it on again after

disconnecting the motor

connector CN10*.

Is the secondary

voltage of

transformer

measured DC10~16V,?

transformer (TT-10)

for power supply is

defective.

Replace the main

Motor is defective.

– 49 −

P.C. board.

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-06027

Does the OPERATION

lamp blink?

YES

Heat pump Model

Indoor Terminal Block

NO NO

Is it wired as shown

in Figure below?

YES

Brown

L

Blue

N

Green & Yellow

CN31

Return the wiring of the

power relay is returned to

the normal procedure.

To the paragraph of

"No Power turns on".

RY01

Black

1

White

2

Red

3

Blue

4

Green & yellow

T02

PC Board

– 50 −

Cooling Model

Black

White

Green / Yellow

2

1

Indooe Terminal Block

Green / Yellow

L

N

9-5-3. Outdoor unit does not operate

FILE NO. SVM-06027

RY01

CN31

Brown

Blue

PC Board

Shut off the power supply

from AC outlet once and turn

it on after 5 seconds.

Does the OPERATION lamp blink?

YES

Does the power turn on by pushing

the [ ] 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 (IC31 : Cooling only model,

Q16 : Heat pump only model)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-06027

Does the OPERATION lamp blink?

YES

Does the power turn on by

pushing the [START/STOP] button

of the remote control?

YES

Is the voltage across the indoor terminal

( 1 - 2 ) AC 220-240V?

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 IC31

or IC30 is failure.

Correct cabling between indoor

and outdoor units.

Cables between indoor and

outdoor units are defective.

Re-wire or replace the defective cords.

Replace the

P.C. board.

Is the compressor motor winding normal?

(Check the winding resistor.)

YES

Is the capacitor for compressor normal.

YES

Is the overload relay normal?

YES

Does the compressor start?

YES

Compressor starts but

it stops after a while?

YES

Is the gas quantity normal?

(Check the pressure)

YES

Compressor is defective

NO

NO

NO

NO

NO

Compressor is defective.

Capacitor is defective.

Overload relay is defective.

Compressor is defective.

Gas shortage (Gas leakage)

− 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-06027

Does the OPERATION lamp blink?

YES

Does the power turn on by

pushing the [START/STOP] button

of the remote control?

YES

Is the voltage across the indoor terminal

( 2 - 4 : Heat pump model, 1 - 2 :

Cooling only model) AC 220-240V?

YES

Is cable connection between indoor

and outdoor units correct?

YES

Is the voltage across the terminal

( 2 - 4 : Heat pump model, 1 - 2 :

Cooling only model) 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 IC31

or IC30 is failure.

Correct cabling between indoor

and outdoor units.

Cables between indoor

and outdoor units are defective.

Correct the wire or

replace the defective cords.

Replace the

P.C. board.

Is the outdoor fan motor winding normal?

(Check the winding resistance)

YES

Is the capacitor for compressor normal?

YES

Outdoor fan motor is defective.

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)

Heat Pump Model

Shut off the power supply

from AC outlet once and

turn it on after 5 seconds.

FILE NO. SVM-06027

Does the OPERATION lamp blink?

YES

Does the power turn on by

pushing the [START/STOP] button

of the remote control?

YES

Is the voltage across the indoor terminal

( 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 IC31

or IC30 is failure.

Correct cabling between indoor

and outdoor units.

Cables between indoor

and outddor 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>

Heat Pump Model

Shut off the

power supply once.

Turn the power supply.

FILE NO. SVM-06027

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, D38, R25, R26, Q17)

or 12V power circuit failure.

Replace the P.C. board.

of incompleted connecting.

NO

Thermal fuse operated

due to prevent

temperature rising cause

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.

Cooling Model

Shut off the

power supply once.

Turn the power supply.

FILE NO. SVM-06027

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 hight 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, IC31, TT-10) or 12V

power circuit failire.

Replace the P.C. board.

temperature rising cause

of incompleted connecting.

NO

Thermal fuse operated

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.

− 56 −

NO

Replace the fan motor

Replace connecting

the cable (or power cord),

thermal fuse and

terminal block.

FILE NO. SVM-06027

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

signal receiver of the

air conditioner?

YES

Battery life

NO

Reset the remote control

by use the tip pencil push

in the RESET hole

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 in a trasistor

radio when transmitting

within 5 cm distance

from the radio?

YES

P.C. board is failure.

Replace

P.C. board

NO

Replace the

batteries

NO

Normal

Is there any

beep and

operation?

YES

Remote control

is failure.

Replace remote

control.

− 57 −

FILE NO. SVM-06027

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.

− 58 −

FILE NO. SVM-06027

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 4 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 2 connectors (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 2 screws for the electrical part
box and remove the screw from the LED unit.
Then remove the LED unit and the electrical
part box from the main unit.

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) Assemble the drain guide (the TC sensor wire
should be covered by the drain guide).

7) Tighten the screw on the electrical part cover.

2

2

2 4-Screws

3

4 TC Sensor

5

Screw

3-Connectors

6 Screw

2

2 Screws

3

3 Horizontal

louver

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.

− 59 −

3 Left shaft

2 Center shaft

FILE NO. SVM-06027

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 2 screws on the heat exchanger
at the 2 fixed plates (upper and lower) from
the back body, and then pull out the upper
side of the 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 lowest point of band motor
(R) (point A).
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
6 mm.

2 Pipe holder

3

2-Screws

4

2-Screws

2

2-Screws

(R)

2 2-Screws (L)

6 mm

6 Set screw

Middle of the fan motor terminal

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.

− 60 −

2

2-Screws

FILE NO. SVM-06027

10-2. Outdoor Unit

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.

– 61 –

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)

(RAS-13GKHP-ES2)

FILE NO. SVM-06027

Location Part Location Part

No. No. No. No.

401 43T60001 TERMINAL 405 43T69079 PC BOARD ASSY;WRS-LED
402 43T60002 TERMINAL BLOCK; 3P 406 43T60077 FUSE, TEMPERATURE, 73C
403 43T69004 SENSOR;HEAT EXCHANGER 410 43T62003 CORD CLAMP
404 43T69005 SENSOR;THERMOSTAT 411 43T69568 PC BORD

Description Description

− 62 −

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

(RAS-13NKHP-AS2)

FILE NO. SVM-06027

Location Part Location Part

No. No. No. No.

401 43T60001 TERMINAL 405 43T69079 PC BOARD ASSY;WRS-LED
402 43T60002 TERMINAL BLOCK; 3P 406 43T69364 FUSE,TEMPERATURE
403 43T69004 SENSOR;HEAT EXCHANGER 407 43T60371 POWER CORD (AS)
404 43T69005 SENSOR;THERMOSTAT 410 43T62003 CORD CLAMP

Description Description

411 43T69432 PC BOARD

− 63 −

11-3. Indoor Unit (E-Parts Assy)

(RAS-13GKP-ES2)

FILE NO. SVM-06027

Location Part Location Part

No. No. No. No.

402 43T60002 TERMINAL BLOCK; 3P 406 43T60077 FUSE, TEMPERATURE, 73C
403 43T69004 SENSOR;HEAT EXCHANGER 410 43T62003 CORD CLAMP
404 43T69005 SENSOR;THERMOSTAT 411 43T69567 PC BORD

405 43T69079 PC BOARD ASSY;WRS-LED 412 43T69361 TRANSFORMER(TT-10)

Description Description

− 64 −

11-4. Indoor Unit (E-Parts Assy)

(RAS-13NKP-AS2)

FILE NO. SVM-06027

Location Part Location Part

No. No. No. No.

402 43T60002 TERMINAL BLOCK; 3P 407 43T60374 POWER CORD (AS)
403 43T69004 SENSOR;HEAT EXCHANGER 407 43T60374 POWER CORD (AS)
404 43T69005 SENSOR;THERMOSTAT 410 43T62003 CORD CLAMP
405 43T69079 PC BOARD ASSY;WRS-LED 411 43T69367 PC BOARD
406 43T69364 FUSE,TEMPERATURE 412 43T69361 TRANSFORMER(TT-10)

Description Description

− 65 −

11-5. Indoor Unit

(

)

(

)

FILE NO. SVM-06027

Location Part Location Part

No. No. No. No.

201 43T00435 FRONT PANEL ASSY 216 43T49331 PLATE OF EVA SEAL

(RAS-13GKHP-ES2,RAS-13NKHP-AS2) 217 43T49006 HOLDER FOR PLATE

201 43T00430 FRONT PANEL ASSY 218 43T22308 ASM-M-BEARING

(RAS-13GKP-ES2,RAS-13NKP-AS2) 219 43T39301 BASE; BEARING
202 43T09387 INLET GRILLE ASSY 220 43T20321 ASSY-CROSS FLOW FAN
203 43T03341 BACK BODY ASSY 221 43T39302 BAND MOTOR-L
204 43T80311 AIR-FILTER(R) 222 43T21322 MOTOR; FAN
205 43T80310 AIR FILTER (L) 223 43T39303 BAND MOTOR-R
206 43T09328 HORIZONTAL LOUVER 224 43T69421 WIRELESS-REMOCO
207 43T70310 DRAIN-HOSE
208 43T79301 CAP-DRAIN 224 43T69422 WIRELESS-REMOCO
209 43T21372 MOTOR; STEPPING
210 43T44384 REFRIGERATION CYCLE ASSY 225 43T83003 HOLDER; REMOTE CONTROLLER

(RAS-13GKHP-ES2,RAS-13NKHP-AS2) 226 43T62302 TERMINAL COVER
210 43T44385 REFRIGERATION CYCLE ASSY 227 43T60317 CORD MOTOR LOUVER

(RAS-13GKP-ES2,RAS-13NKP-AS2) 228 43T07303 HOLDER PIPE
211 43T47352 PIPE; DELIVERY 229 43T82310 PLATE; INSTALLATION
212 43T47353 PIPE; SUCTION 230 43T60359 CORD-FM
213 43T49330 SPRING
214 43T11302 PIPE-SHIELD
215 43T19302 HOLDER SENSOR

Description Description

RAS-13GKHP-ES2,RAS-13NKHP-AS2

RAS-13GKP-ES2,RAS-13NKP-AS2

− 66 −

11-6. Outdoor Unit (RAS-13GAH-ES2, RAS-13N2AH-AS2)

FILE NO. SVM-06027

Location Part Location Part

No. No. No. No.

1 43T42328 BASE PLATE ASSEMBLY 19 43T04301 PARTITION
2 43T41380 COMPRESSOR(Made in China) 20 43T39322 MOTOR BASE CONNECTION PLATE
3 43T49008 CUSHION,RUBBER 21 43T39318 MOTOR BASE
4 43T97307 COMPRESSOR BOLT (M6) 22 43T19330 PACKED VALVE COVER
5 43T43383 CONDENSER ASSEMBLY 23 43T00460 UPPER CABINER ASSEMBLY
6 43T00448 FIXING PLATE VALVE 24 43T96305 BUSHING
7 43T46332 VALVE;PACKED 6.35 DIA 25 43T62325 ELECTRIC PART COVER
8 43T46335 VALVE;PACKED 12.7 DIA (H4) 26 43T19331 FIN GUARD

9 43T47331 BONNET, 6.35 DIA 28 43T61308 ELECTRIC PARTS BASE
10 43T47333 BONNET, 12.70 DIA 29 43T55339 CAPACITOR,PLASTIC FILM
11 43T47008 CAPILLARY TUBE; 1.5 DIA 30 43T55325 CAPACITOR; PLASTIC-FILM
12 43T00468 FRONT CABINET 31 43T60373 TERMINAL-4P
13 43T00459 LEFT CABINET 32 43T46337 4 WAY VALVE
14 43T00451 RIGHT CABINET ASSEMBLY 33 43T46339 COIL;V-4WAY;AC220-240V 50Hz
15 43T21362 FAN MOTOR(Made in China) 34 43T79305 DRAIN NIPPLE
16 43T20319 PROPELLER FAN 35 43T47308 CAPILLARY TUBE; 1.0 DIA
17 43T47001 NUT FLANGE
18 43T19329 FAN GUARD

Description Description

− 67 −

11-7. Outdoor Unit (RAS-13GA-ES2, RAS-13N2A-AS2)

FILE NO. SVM-06027

Location Part Location Part

No. No. No. No.

1 43T42328 BASE PLATE ASSEMBLY 16 43T20319 PROPELLER FAN
2 43T41380 COMPRESSOR(Made in China) 17 43T47001 NUT FLANGE
3 43T49008 CUSHION,RUBBER 18 43T19329 FAN GUARD
4 43T97307 COMPRESSOR BOLT (M6) 19 43T04301 PARTITION
5 43T43382 CONDENSER ASSEMBLY 20 43T39322 MOTOR BASE
6 43T00448 FIXING PLATE VALVE
7 43T46332 VALVE;PACKED 6.35 DIA 21 43T39318 MOTOR BASE
8 43T46335 VALVE;PACKED 12.7 DIA (H4) 22 43T19330 PACKED VALVE COVER

9 43T47331 BONNET, 6.35 DIA 23 43T00460 UPPER CABINER ASSEMBLY
10 43T47333 BONNET, 12.70 DIA 24 43T96305 BUSHING
11 43T47014 CAPILLARY TUBE; 1.7DIA 25 43T62325 ELECTRIC PART COVER
12 43T00468 FRONT CABINET 26 43T19331 FIN GUARD
13 43T00459 LEFT CABINET 28 43T61308 ELECTRIC PARTS BASE
14 43T00451 RIGHT CABINET ASSEMBLY 29 43T55339 CAPACITOR,PLASTIC FILM
15 43T21361 FAN-MOTOR 30 43T55325 CAPACITOR; PLASTIC-FILM

Description Description

CONNECTION PLATE

31 43T60367 TERMINAL-2P

− 68 −

FILE NO. SVM-03001(1)

TOSHIBA CARRIER (THAILAND) CO.,LTD.

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

AMPHUR MUANG, PATHUMTHANI 12000,THAILAND.

– 72 –