Toshiba RAS-4M36SAH-E, RAS-3M31SAH-E-1, RAS-10SKH-E-1 SERVICE MANUAL

SERVICE MANUAL

AIR-CONDITIONER

MULTI SPLIT WALL TYPE

FILE NO. A00-9805

SUPPLEMENT

RAS-10SKH-E-1 RAS-10SKH-E-1

x

2, RAS-13SKH-E

RAS-10SKH-E-1

x 2 x 3 x 4

x 2 / RAS-M18SAH-E

x 4 / RAS-4M36SAH-E

/

RAS-3M31SAH-E-1

PRINTED IN JAPAN, Apr.,1998 ToMo

1. DESCRIPTION

RAS-M18SAH-E

RAS-M18SAH-E can be used alone with two indoor units RAS-10SKH-E-1.

RAS-3M31SAH-E-1

in a combination of two outdoor units

RAS-13SAH-E (upper unit, one compressor) RAS-M18SAH-E (lower unit, two compressors)

The upper unit can be used with one indoor unit RAS-13SKH-E and the lower unit with two indoor units RAS-10SKH-E-1.

RAS-4M36SAH-E

The lower unit RAS-M18SAH-E can be used as a double decker under the combination name RAS-4M36SAH-E with four indoor units RAS-10SKH-E-1.

– 3 –

2. SPECIFICATIONS

RAS-10SKH-E-1 x 2 / RAS-M18SAH-E

Item

Capacity *1 kW

Phase

Power source V

Hz Power consumption kW Power factor %

Running current Starting current A

Moisture removal lit/h Noise

Refrigerant Refrigerant control

Interconnection pipe

Condensate drain pipe Outer diameter mm

INDOOR UNIT

Dimensions Width mm

Net weight kg Evaporator type Indoor fan type

Air volume Medium fan m3/h

Fan motor output W Air filter

OUTDOOR UNIT

Dimensions Width mm

Net weight kg Condenser type Outdoor fan type Airflow volume (220/230/240V) m3/h Fan motor output W Compressor Model

Safety device Auto louver Usable outdoor temperature range °C

Indoor (H/M/L) dB Outdoor (220/230/240V) dB Name of refrigerant Rated volume kg

Gas side size mm Connection type Liquid side size mm Connection type Maximum length (One way) m *2 Maximum height difference

Indoor unit Outdoor unit

Height mm

Depth mm

High fan m3/h

Low fan m3/h

Height mm

Depth mm

Output W

A

Indoor/Outdoor

m

Model

RAS-10SKH-E-1 x 2 / RAS-M18SAH-E

Cooling Heating

220V 230V 240V 220V 230V 240V

5,0 5,0 5,0 5,6 5,6 5,6

Single

220/230/240

50

2,04/2,10/2,18 1,78/1,86/1,96

95/92/89 94/91/87

220V 230V 240V 220V 230V 240V

0,22/9,54 0,22/9,7 0,22/9,96 0,22/8,38 0,22/8,66 0,22/9,16

19

1,2 41/36/31 52/53/54

R-22

1,4 (0,7+0,7)

Capillary tube

9,52

Flare connection

6,35

Flare connection

15

5

16

RAS-10SKH-E-1

265 790 174

8

Finned tube

Cross flow fan

600 500 400

19

Polypropylene net filter (Washable)

RAS-M18SAH-E

538 830 300

55

Finned tube

Propeller

1830/1920/2010

28

PH120T1-4C x 2

750W x 2

Fuse, Overload relay

Yes

21 ~ 43 – 5 ~ 21

Specifications are subject to change without notice.

– 4 –

Item

Capacity *1 kW

Phase

Power source V

Hz Power consumption kW Power factor %

Running current

A

Indoor/Outdoor

Model

RAS-10SKH-E-1 / RAS-M18SAH-E

Cooling Heating

220V 230V 240V 220V 230V 240V

2,50 2,50 2,50 2,80 2,80 2,80

Single

220/230/240

50

1,02/1,05/1,09 0,89/0,93/0,98

95/92/89 94/91/87

220V 230V 240V 220V 230V 240V

0,11/4,77 0,11/4,85 0,11/4,98 0,11/4,19 0,11/4,33 0,11/4,58

– 5 –

RAS-10SKH-E-1 x 2, RAS-13SKH-E / RAS-3M31SAH-E-1

Item

Capacity *1 kW

Phase

Power source V

Hz Power consumption kW Power factor %

Running current Starting current A

Moisture removal lit/h Noise

Refrigerant Refrigerant control

Interconnection pipe

Condensate drain pipe Outer diameter mm

INDOOR UNIT

Dimensions Width mm

Net weight kg Evaporator type Indoor fan type

Air volume Medium fan m3/h

Fan motor output W Air filter

OUTDOOR UNIT

Dimensions Width mm

Net weight kg Condenser type Outdoor fan type Airflow volume (220/230/240V) m3/h Fan motor output W Compressor Model

Safety device Auto louver Usable outdoor temperature range °C

Indoor (H/M/L) dB Outdoor (220/230/240V) dB Name of refrigerant Rated volume kg

Gas side size mm Connection type Liquid side size mm Connection type Maximum length (One way) m *2 Maximum height difference

Indoor unit Outdoor unit

Height mm

Depth mm

High fan m3/h

Low fan m3/h

Height mm

Depth mm

Output W

A

Indoor/Outdoor

m

Model

RAS-10SKH-E-1 x 2, RAS-13SKH-E / RAS-3M31SAH-E-1

Cooling Heating

220V 230V 240V 220V 230V 240V

8,45 8,50 8,50 9,60 9,65 9,70

Single

220/230/240

50

3,30/3,38/3,48 2,97/3,09/3,23

96/93/90 94/93/89

220V 230V 240V 220V 230V 240V

0,37/15,24 0,37/15,36 0,37/15,71 0,37/13,92 0,37/14,14 0,37/14,70

19+19+25

1,2+1,2+2,0

RAS-10SKH-E-1 : 41/36/31 RAS-13SKH-E : 44/39/36

52/53/54

R-22

2,28 (0,7+0,7+0,88)

Capillary tube

RAS-10SKH-E-1 : 9,52 RAS-13SKH-E : 12,7

Flare connection

6,35

Flare connection

15

RAS-10SKH-E-1 : 5 RAS-13SKH-E : 6

16

RAS-10SKH-E-1 RAS-13SKH-E

265 790 174

8

Finned tube

Cross flow fan 600 650 500 560 400 510

19

Polypropylene net filter (Washable)

RAS-3M31SAH-E-1

1125

830 300 106

Finned tube

Propeller

1830/1920/2010

28

PH120T1-4C x 2 + PH170T2-4L2

750W x 2 + 1100W x 1

Fuse, Overload relay

Yes

21 ~ 43 – 5 ~ 21

Specifications are subject to change without notice.

– 6 –

Item

Capacity *1 kW

Phase

Power source V

Hz Power consumption kW Power factor %

Running current

Item

Capacity *1 kW

Power source V

Power consumption kW Power factor %

Running current

Item

Capacity *1 kW

Power source V

Power consumption kW Power factor %

Running current

Item

Capacity *1 kW

Power source V

Power consumption kW Power factor %

Running current

A

Indoor/Outdoor

Phase

Hz

A

Indoor/Outdoor

Phase

Hz

A

Indoor/Outdoor

Phase

Hz

A

Indoor/Outdoor

Model

RAS-10SKH-E-1, RAS-13SKH-E / RAS-3M31SAH-E-1

Cooling Heating

220V 230V 240V 220V 230V 240V

5,95 6,00 6,00 6,80 6,85 6,90

Single

220/230/240

50

2,28/2,33/2,39 2,08/2,16/2,25

97/94/91 95/93/90

220V 230V 240V 220V 230V 240V

0,26/10,47 0,26/10,51 0,26/10,73 0,26/9,73 0,26/9,81 0,26/10,12

RAS-10SKH-E-1 x 2 / RAS-3M31SAH-E-1

Cooling Heating

220V 230V 240V 220V 230V 240V

5,0 5,0 5,0 5,6 5,6 5,6

Single

220/230/240

50

2,04/2,10/2,18 1,78/1,86/1,96

95/92/89 94/91/87

220V 230V 240V 220V 230V 240V

0,22/9,54 0,22/9,70 0,22/9,96 0,22/8,38 0,22/8,66 0,22/9,16

RAS-13SKH-E / RAS-3M31SAH-E-1

Cooling Heating

220V 230V 240V 220V 230V 240V

3,45 3,50 3,50 4,00 4,05 4,10

Single

220/230/240

50

1,26/1,28/1,30 1,19/1,23/1,27

98/96/92 95/95/93

220V 230V 240V 220V 230V 240V

0,15/5,70 0,15/5,66 0,15/5,75 0,15/5,54 0,15/5,48 0,15/5,54

RAS-10SKH-E-1 / RAS-3M31SAH-E-1

Cooling Heating

220V 230V 240V 220V 230V 240V

2,50 2,50 2,50 2,80 2,80 2,80

Single

220/230/240

50

1,02/1,05/1,09 0,89/0,93/0,98

95/92/89 94/91/87

220V 230V 240V 220V 230V 240V

0,11/4,77 0,11/4,85 0,11/4,98 0,11/4,19 0,11/4,33 0,11/4,58

– 7 –

RAS-10SKH-E-1 x 4 / RAS-4M36SAH-E

Item

Capacity *1 kW

Phase

Power source V

Hz Power consumption kW Power factor %

Running current Starting current A

Moisture removal lit/h Noise

Refrigerant Refrigerant control

Interconnection pipe

Condensate drain pipe Outer diameter mm

INDOOR UNIT

Dimensions Width mm

Net weight kg Evaporator type Indoor fan type

Air volume Medium fan m3/h

Fan motor output W Air filter

OUTDOOR UNIT

Dimensions Width mm

Net weight kg Condenser type Outdoor fan type Airflow volume (220/230/240V) m3/h Fan motor output W Compressor Model

Safety device Auto louver Usable outdoor temperature range °C

Indoor (H/M/L) dB Outdoor (220/230/240V) dB Name of refrigerant Rated volume kg

Gas side size mm Connection type Liquid side size mm Connection type Maximum length (One way) m *2 Maximum height difference

Indoor unit Outdoor unit

Height mm

Depth mm

High fan m3/h

Low fan m3/h

Height mm

Depth mm

Output W

A

Indoor/Outdoor

m

Model

RAS-10SKH-E-1 x 4 / RAS-4M36SAH-E

Cooling Heating

220V 230V 240V 220V 230V 240V

10,0 10,0 10,0 11,2 11,2 11,2

Single

220/230/240

50

4,08/4,20/4,36 3,56/3,72/3,92

95/92/89 94/91/87

220V 230V 240V 220V 230V 240V

0,44/19,08 0,44/19,4 0,44/19,92 0,44/16,76 0,44/17,32 0,44/18,32

19+19+19+19

1,2+1,2+1,2+1,2

41/36/31

54/55/56 55/56/57

R-22

2,8 (0,7+0,7+0,7+0,7)

Capillary tube

9,52

Flare connection

6,35

Flare connection

15

5

16

RAS-10SKH-E-1

265 790 174

8

Finned tube

Cross flow fan

600 500 400

19

Polypropylene net filter (Washable)

RAS-4M36SAH-E

1125

830 300 119

Finned tube

Propeller

1830/1920/2010

28

PH120T1-4C

750W x 4

Fuse, Overload relay

Yes

21 ~ 43 – 5 ~ 21

Specifications are subject to change without notice.

– 8 –

Item

Capacity *1 kW

Phase

Power source V

Hz Power consumption kW Power factor %

Running current

Item

Capacity *1 kW

Power source V

Power consumption kW Power factor %

Running current

Item

Capacity *1 kW

Power source V

Power consumption kW Power factor %

Running current

A

Indoor/Outdoor

Phase

Hz

A

Indoor/Outdoor

Phase

Hz

A

Indoor/Outdoorr

Model

RAS-10SKH-E-1 x 3 / RAS-4M36SAH-E

Cooling Heating

220V 230V 240V 220V 230V 240V

7,50 7,50 7,50 8,40 8,40 8,40

Single

220/230/240

50

3,06/3,15/3,27 2,67/2,79/2,94

97/94/91 95/93/90

220V 230V 240V 220V 230V 240V

0,33/14,31 0,33/14,55 0,33/14,94 0,33/12,57 0,33/12,99 0,33/13,74

RAS-10SKH-E-1 x 2 / RAS-M36SAH-E

Cooling Heating

220V 230V 240V 220V 230V 240V

5,0 5,0 5,0 5,6 5,6 5,6

Single

220/230/240

50

2,04/2,10/2,18 1,78/1,86/1,96

95/92/89 94/91/87

220V 230V 240V 220V 230V 240V

0,22/9,54 0,22/9,70 0,22/9,96 0,22/8,38 0,22/8,66 0,22/9,16

RAS-10SKH-E-1 / RAS-4M36SAH-E

Cooling Heating

220V 230V 240V 220V 230V 240V

2,50 2,50 2,50 2,80 2,80 2,80

Single

220/230/240

50

1,02/1,05/1,09 0,89/0,93/0,98

95/92/89 94/91/87

220V 230V 240V 220V 230V 240V

0,11/4,77 0,11/4,85 0,11/4,98 0,11/4,19 0,11/4,33 0,11/4,58

– 9 –

Note : *1

• Capacity is based on the following temperature conditions.

JIS C9612-1994Condition

T emperature

Indoor unit inlet air temperature

Outdoor unit inlet air temperature

Notes : *2

(DB)

(WB)

(DB)

(WB)

Cooling

27°C 19°C 35°C 24°C

Heating

20°C

— 7°C 6°C

RAS-13SKH-E / RAS-3M31SAH-E-1

• No additional refrigerant required.

• This air conditioner accepts a connection piping length of up to 15m and a head of up to 6m.

• There is no need to add the refrigerant as long as the total length of the connection piping is up to 15m.

RAS-10SKH-E-1 / RAS-M18SAH-E, RAS-10SKH-E-1 / RAS-3M31SAH-E-1, RAS-10SKH-E-1 / RAS-4M36SAH-E

• This air conditioner accepts a connection piping length of up to 15m and a head of up to 5m.

• There is no need to add the refrigerant as long as the total length of the connection piping is up to 10m.

• There is need to add the refrigerant 20g/m as long as the each length of the connection piping is up to 11m to 15m.

– 10 –

3-1. Indoor Unit

,,,,,,,,,,,,,,,,

,,,,,,,,,,,,,,,,,

RAS-10SKH-E-1 RAS-13SKH-E

Air inlet

3. CONSTRUCTION VIEWS

Air filter

790

Heat exchanger

174

265

Air outlet

232 326 232

Drain hose (0,54m)

Hanger

Connecting pipe (0,39m)

13SKH-E 10SKH-E-1: (Flare ø9,52)

: (Flare ø12,7)

790

Hanger

321

Connecting pipe (0,49m) (Flare ø6,35)

Front panel

Back body

47

Knock out system

50

10

Knock out system

50

10

65965,5 450

Hanger

326

66 or more

Minimum distance

46

2,5

Minimum distance

17 20

265

to wall

120 or more 120 or more

3,5

40,5

Center line

to ceiling

HangerHanger

Installation plate outline

790

– 11 –

12626931976

65,5

Hanger For stud bolt

(ø8~ø10) For stud bolt

(ø6)

Minimum distance to wall

20 2037

40,5

60,5

Wireless remote control

Remote control holder

55

136

16

112,8

559,6

3-2. Outdoor Unit

RAS-M18SAH-E

Liquid side

Electric

parts cover

6,35)

φ

(Flare

9,52)

φ

Gas side

(Flare

600 or more

10

φ

8-

11x14

φ

for

4x

anchor bolt

10 anchor bolt)

φ

8-

φ

11x14 hole

6 hole

φ

8-

(for

6-

(for fixing outdoor unit)

Service

port

FOR UNIT B

54545491

FOR UNIT A

Air inlet

600

Installation dimension

Air inlet

325

100 or more

600 or more

Air outlet

100 or more

φ25 Drain outlet

120

A

R10

600

50

36

Detail Drawing

A

52

23

325

6 hole

φ

301

11x14 hole

φ

Fan guard

Handle

420

φ

830 60 344

90 600 90 50

538

300

– 12 –

RAS-3M31SAH-E-1 RAS-4M36SAH-E

600 or more

4-φ11x14

for φ8-φ10

anchor bolt

Liquid side

Electrical

parts cover

(Flare φ6,35)

Size

φ12,7

φ9,52

Gas side (Flare)

Model name

RAS-3M31SAH-E-1

RAS-4M36SAH-E

Liquid side

Electrical

parts cover

(Flare φ6,35)

Gas side

(Flare φ9,52)

Air inlet

600

Air inlet

Mounting dimension of anchor bolt

325

100 or more

φ25 Drain outlet

120

600 or more

300

Air outlet

100 or more

4-φ11x14 hole

(for φ8 φ10 anchor bolt)

8-φ6 hole

(for fixing outdoor unit)

186

Service

port

54677,5

Handle

60

Service

port

54545491

325 (pitch)(8,5) (8,5)

600 90 55

835 60 342

A

52,5

325

R12

600

Detail Drawing

36

50

A

23

φ 6 hole

311

325

φ11x14 hole

1125

Drain outlet

90

29

– 13 –

4. REFRIGERANT CYCLE DIAGRAMS

RAS-10SKH-E-1 x 2 / RAS-M18SAH-E

P

Packed valve Packed valve

(3/8) (1/4)

T1

Indoor Unit

Indoor heat exchanger A

Indoor heat exchanger B

Heating

Cooling

Accumulator

50Hz

Standard High temperature*1 Low temperature Standard High temperature Low temperature

4-way valve

PH120T1-4C

Outdoor heat exchanger

Outdoor Unit

Standard pressure

P

(kg/cm²G)

10SKH-E-1

15,0

19 ~ 23

12,5 6,0 6,5 4,0

Check valve

CompressorCompressor

Surface temp. of heat

exchanger interchanging

pipe T1 (°C)

10SKH-E-1

40,0

52,0 ~ 59,0

35,0 12,0 15,0 2,0

Capillary for cooling & heating ø1,7x800

Dryer

Capillary for heating ø1,7x300

Fan speed

(indoor)

High

Low High High High

Low

Cooling

Heating

Ambient temp.

conditions DB/WB

(°C)

Indoor

20/– 27/–

20/– 27/19 32/23 21/15

Outdoor

7/6

21/15

–10/–10

35/24 43/26 21/15

Note :

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

1 • During heating overload, the high temperature limit control operation is included.

*

– 14 –

RAS-10SKH-E-1 x 2, RAS-13SKH-E / RAS-3M31SAH-E-1 (Upper and Lower Unit)

0,49m (Connecting pipe) ø12,7

O.D.: 12,7mm

Cooling

Heating

RAS-13SKH-E

Indoor Unit

Cooling

Heating

Heat exchanger

Cross flow fan

P

Packed valve

(ø12,7)

Gas container connection (Reinstall etc.) Heating

4-way valve

Cooling

Compressor

PH170T2-4L2

Accumulator

Capillary tube

ø1,7x400

Heat exchanger

T1

Packed valve

(ø6,35)

Capillary tube

ø0,6x1500

Capillary tube

ø1,2x400

0,39m (Connecting pipe) ø6,35

O.D.: 6,35mm

P

4-way valve

Comp-

ressor

PH120T1-4C

Accumulator

RAS-10SKHE-1 x 2

Indoor Unit

Indoor heat

exchanger A

Indoor heat

exchanger B

Packed

valve

(3/8) (1/4)

Packed

valve

Check valve

Comp-

ressor

PH120T1-4C

T1

Capillary for heating ø1,7x300

Capillary for cooling & heating ø1,7x800

Dryer

Cooling Heating

Propeller fan

Outdoor Unit

Mark ( ) means check points of Gas Leak

50Hz

Standard

Heating

High temperature*1 Low temperature Standard

Cooling

High temperature Low temperature

Refrigerant R-22 0,88kg

Standard pressure

P

(kg/cm²G)

13SKH-E

10SKH-E-1

15,0

19 ~ 23

12,5

5,0 6,0

6,0 6,5

4,0

Surface temp. of heat

exchanger interchanging

pipe T1 (°C)

13SKH-E 10SKH-E-1

43,0 40,0

52,0 ~ 59,0

35,0 10,0 12,0 14,0 15,0

2,0

Outdoor heat

exchanger

Outdoor Unit

Fan speed

(indoor)

High

Low High High High

Low

Note :

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

1 • During heating overload, the high temperature limit control operation is included.

*

Cooling Heating

Ambient temp.

conditions DB/WB

(°C)

Indoor

20/– 27/–

20/– 27/19 32/23 21/15

Outdoor

7/6

21/15

–10/–10

35/24 43/26 21/15

– 15 –

RAS-10SKH-E-1 x 4 / RAS-4M36SAH-E (Upper and Lower Unit)

P

4-way valve

Comp-

ressor

PH120T1-4C

Accumulator

Indoor Unit

Indoor heat

exchanger A

Indoor heat

exchanger B

Packed

valve

(3/8) (1/4)

Packed

Compressor

PH120T1-4C

valve

Check valve

T1

Capillary for heating ø1,7x300

Capillary for cooling & heating ø1,7x800

Dryer

P

4-way valve

Comp-

ressor

PH120T1-4C

Accumulator

Indoor Unit

Indoor heat

exchanger A

Indoor heat

exchanger B

Packed

valve

(3/8) (1/4)

Packed

Comp-

ressor

PH120T1-4C

valve

Check valve

T1

Capillary for heating ø1,7x300

Capillary for cooling & heating ø1,7x800

Dryer

Heating

Cooling

Outdoor heat

exchanger

Outdoor Unit

50Hz

Standard High temperature*1 Low temperature Standard High temperature Low temperature

Cooling Heating

Standard pressure

P

(kg/cm²G)

10SKH-E-1

15,0

19 ~ 23

12,5 6,0 6,5 4,0

Surface temp. of heat

exchanger interchanging

pipe T1 (°C)

10SKH-E-1

40,0

52,0 ~ 59,0

35,0 12,0 15,0 2,0

Outdoor heat

exchanger

Outdoor Unit

Fan speed

(indoor)

High

Low High High High

Low

Note :

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

1 • During heating overload, the high temperature limit control operation is included.

*

Cooling

Heating

Ambient temp.

conditions DB/WB

(°C)

Indoor

20/– 27/–

20/– 27/19 32/23 21/15

Outdoor

7/6

21/15

–10/–10

35/24 43/26 21/15

– 16 –

5. WIRING DIAGRAM

INDOOR UNIT

RAS-13SKH-E / RAS-3M31SAH-E-1 (Upper Unit)

SG01

BLK

GRN&YEL

L N

POWER

TERMINAL

1 2 3 4

BLK WHI RED BLU GRN&YEL

BLOCK

INDOOR UNIT

INDOOR

TERMINAL

BLOCK

RAS-10SKH-E-1x2/RAS-M18SAH-E RAS-10SKH-E-1x2/RAS-3M31SAH-E-1 (Lower Unit) RAS-10SKH-E-1x2/RAS-4M36SAH-E

(Upper and Lower Unit)

SG01

BLK

TERMINAL

INDOOR

TERMINAL

BLOCK

GRN&YEL

L N

POWER

BLOCK

BLK

1

2

WHI

RED

3

BLU

4

P04

GRN & YEL

11 2 3

4 4

CN27

DSA

BRW

BLU

RY02

T02 C.T.

WHI

THERMAL FUSE

77°C × 2

R109

VARISTOR

F01 FUSE

343

4

BLK

RY03

RY04

T3,15A

250V

RY01

CR01

CR02

GRY 1 1

R21

LOUVER

MOTOR

GRY

3

CN04

3

R116

IC04

C15

1

BLU

1 1

INFRARED RAYS RECEIVE

AND INDICATION PARTS

2 3

BLU

2 2

L01

CN07

BLU

3 3

BRW

CN27

4

567 8 9

BLU

4

567 8 9

4

567 8 9

BLU

DSA

P04

RY02

11 2 3

4 4

ORN

PNK

YEL

346

5

346

5

R01

C01

PNK

BLK

WHI

THERMAL FUSE

VARISTOR

343

4 T02 C.T.

WHI

RY03

RED

BRW

2

1

2

1

DB01

C02

CN13

CN25

77°C × 2

R109

F01 FUSE

T3,15A

250V

RY01

BLK

RY04

CR01

CR02

DC

MOTOR

BLK

BLU

YEL

RED

WHI

4

3

5

2

1

4

3

5

2

1

MAIN P.C. BOARD

MCC-713

T01

C06

IC

IC01

2

1

CN03

2

1

BLK

THERMO SENSOR (TA)

LOUVER

MOTOR

GRY

GRY 3

1

CN04

1

3

R116

C15

R21

INFRARED RAYS RECEIVE

AND INDICATION PARTS

FAN MOTOR

CN10

DC35V

DC12V

DC7V

DC0V

IC02

2

1

CN01

2

1

BLK

HEAT EXCHANGER SENSOR (TC)

IC04

1

BLU

1 1

2 3

BLU

2 2

L01

CN07

BLU

3 3

4

BLU

4 4

PNK

BLU

5 5

R01

C01

567 8 9

BLU

PNK

567 8 9 567 8 9

ORN

YEL

RED

BRW

346

2

1

346

2

1

DB01

C02

IC01

CN13

BLK

WHI

CN25

DSA : Surge absorbor C.T : Current trans

FAN MOTOR

DC

MOTOR

BLK

BLU

YEL

RED

WHI

4

3

5

2

1

4

3

5

2

1

CN10

MAIN P.C. BOARD

MCC-713

T01

C06

IC

2

1

CN03 CN01

2

1

BLK

THERMO SENSOR (TA)

GRN&YEL

L N

POWER

TERMINAL

BLOCK

BLK

WHI

1

2

RED

BLU

3

4

DC 35V

DC 12V

DC 7V

DC 0V

IC02

2

1

2

1

BLK

HEAT EXCHANGER SENSOR (TC)

BLK

P04

GRN & YEL

4 4

CN27

BRW

BLU

11 2 3

SG01

DSA

RY02

T02

C.T.

WHI

THERMAL FUSE

77°C × 2

R109

VARISTOR

F01 FUSE

T3,15A

250V

343

4

BLK

RY03

RY04

CR01

CR02

RY01

GRY

GRY 3

1 1

3

R21

COLOR IDENTIFICATION

:

BROWN

BRW

:

RED

:

WHITE

WHI

:

YELLOW

YEL

:

BLUE

BLU

:

BLACK

BLK

:

GRAY

GRY

:

PINK

PNK

:

ORANGE

ORN

:

GRN&YEL

LOUVER

MOTOR

CN04

R116

IC04

C15

1

BLU

1 1

INFRARED RAYS RECEIVE

AND INDICATION PARTS

GREEN & YELLOW

ORN

PNK

YEL

BLU

346

5

346

5

CN07

R01

C01

L01

4

2 3

567 8 9

BLU

PNK

BLK

WHI

4

2

567 8 9

3

4

2

567 8 9

3

DB01

CN13

CN25

RED

2 2

BRW

1 1

MOTOR

BLU

WHI

4

5

4

5

C02

IC

IC01

1 1

BLK

DSA : Surge absorbor C.T : Current trans

DC

FAN MOTOR

BLK

YEL

RED

3

2

1

3

2

1

CN10

MAIN P.C. BOARD

MCC-713

T01

C06

2 2

BLK

CN03

THERMO SENSOR (TA)

DC35V

DC12V

DC7V

DC0V

IC02

2

1

CN01

2

1

BLK

HEAT EXCHANGER SENSOR (TC)

OVERLOAD RELAY

THERMOSTAT FOR

COMPRESSOR

BLK

1

RED

2

WHI

3

BLK

4

TERMINALS

BLK

1

RED

2

WHI

3

BLK

4

TERMINALS

BLK

L

RED

N

YEL & GRN

TRANSFORMER

RED

WHI

BLU

YEL

ORN

FAN MOTOR

OUTDOOR UNIT

1

2

3

TERMINALS

BLK

RED

CAPACITOR

PNK

WHI

4 3

RY01

CN09

1

3

CN04

4 3

RY02

CN10

1

CN05

3

F01

Fuse

5

3

SG01 300V

1

CN01

1

CN02

3

CN

131

03

2 2

3

CN08 CN07 CN06

5 5

BLK RED

BLK

RED WHI

CAPACITOR

4

BRW

SOLENOID

CAPACITOR

COIL

RED

FAN MOTOR

MAIN P.C. BOARD (MCC-738)

R01

R02

C01 C02

RY06

RY04

CR04 CR02 CR01

1

1 3 1 3

3

1

3

BLK BLK

1 2

UNIT B

COIL FOR

RED

4 WAY VALVE

GRN & YEL

CHASSIS

WHI

BLK

UNIT A

COIL FOR

4 WAY VALVE

RY03

OVERLOAD

RELAY

BLK

OVERLOAD

RELAY

BLK

CN11

1 2 3 4

5 6 7 8

CN12

1 2 313

CN13

1 2 313

CAPACITOR WHI

PNK

COMPRESSOR

CAPACITOR WHI

PNK

COMPRESSOR

HEAT

BLK

EXCHANGER SENSOR

BLK

(TE)

HEAT

BLK

EXCHANGER SENSOR

BLK

(TE)

RED

– 17 – – 18 –

6-1. Indoor Unit

RAS-10SKH-E-1 RAS-13SKH-E

6. SPECIFICATIONS OF ELECTRICAL PARTS

No.

1

Fan motor (for indoor)

Thermo. sensor

2

(TA-sensor)

3

DC-DC transformer (T01)

4

Microcomputer Power relay (RY01),

5

Common relay (RY02) Heat exchanger sensor

6

(TC-sensor) Line filter (L01)

7

Diode (DB01)

8

Capacitor (C02)

9

10

Fuse (F01) Relay (for outdoor fan motor,

11

solenoid coil) (RY03, RY04)

Parts name

Type

ICF-35-19-3

or

TICF-35-19-3

(microprocessor)

SWT-34

TMP87CK40F

DI1U

(microprocessor)

RF-103YOR6

RBV-406

CEAUF2W101M20

MT3

AJQ1341

Specifications

DC 35V, 19W

10kΩ at 25°C

DC390V, Secondary DC35V, 12V, 7V

Coil : DC12V 75mA, Rated AC250V 20A

10kΩ at 25°C

10mH, AC 0,6A 4A, 600V 100µF, 450V T3,15A, 250V

Coil DC12V, 33mA, Rated 1A 250V AC

Power supply IC (IC01)

12

Varistor (R21, R109)

13

Resistor (R01)

14

Current trans (T02)

15

Louver motor

16

MA2830-FJ

15G561K

ERF-5TK5R6

CT422920S-01

MP35EA7

4A, 600V 560V 5,6 Ω, 5W

Output (Rated) 2W, 10 poles, 1 phase DC 12V

– 19 –

6-2. Outdoor Unit

RAS-3M31SAH-E-1 (Upper Unit)

No. Parts name Type

1 Compressor PH170T2-4L2

2 Fan motor (for outdoor) AF-230-28P

Running capacitor

3

(for fan motor) Running capacitor

4

(for compressor) Solenoid coil

5

(for 4-way valve) 6 Overload relay J-MRA99257-9200 7 Thermostat for Compressor CS-7

SK-50FMP

SK-40CMP35U1

LB60012

RAS-M18SAH-E RAS-3M31SAH-E-1 (Lower Unit) RAS-4M36SAH-E (Upper and Lower Unit)

Specifications

Output (Rated) 1100W, 2 pole, 1 phase, 220/230/240V, 50Hz

Winding resistance (Ω) (at 20°C)

Output (Rated) 28W, 6 pole, 1 phase, 220/230/240V, 50Hz

Winding resistance (Ω) (at 20°C)

500V AC, 1,5µF

400V AC, 35µF

AC : 200/240V

UT 8,0A (80°C), OPEN 145±5°C, CLOSE 75±11°C 130°C OFF, 70°C ON

Red-Black White-Black

2,22 3,04

Red-Black White-Black

198 160

No. Parts name Type

1 Compressor PH120T1-4C

2 Fan motor (for outdoor) AF-230-28P

Running capacitor

3

(for fan motor)

Running capacitor

4

(for compressor)

Solenoid coil

5

(for 4-way valve) 6 Overload relay J-MRA99269-9200 7 Transformer FT-70 8 Outdoor P.C. board MCC-738

Heat exchanger sensor

9

(TE-sensor)

SK-45FMP

SK-40CMP30U1

LB60012

(microprocessor)

Specifications

Output (Rated) 750W, 2 pole, 1 phase, 220/230/240V, 50Hz

Winding resistance (Ω) (at 20°C)

Output (Rated) 28W, 6 pole, 1 phase, 220/230/240V, 50Hz

Winding resistance (Ω) (at 20°C)

450V AC, 2µF

400V AC, 30µF

AC : 200/240V

U/T 6,8A (90°C), OPEN 135±5°C, CLOSE 69±11°C AC : 220/240V

10kΩ at 25°C

Red-Black White-Black

4,53 8,73

Red-Black White-Black

198 160

– 20 –

7. MICROCOMPUTER BLOCK DIAGRAMS

RAS-13SKH-E / RAS-3M31SAH-E-1 (Upper Unit)

Operation

C. P. U

Functions

Timer

Display

• Louver Control

Display

ECONO.

Sign Display

• 3-minutes Delay at Restart for Compressor

PRE-DEF.

Sign Display

• Motor Revolution Control

Indoor

Fan Motor

• Processing

(Temperature Processing)

• Timer

Signal

Louver

ON/OFF

Signal

ON/OFF

4-Way Valve

Signal

ON/OFF

Outdoor Fan

Signal

ON/OFF

Compressor

Motor

Louver

Relay

RY01 RY03 RY04

Relay Driver, Louver Driver

Relay

4-Way ValveOutdoor Fan MotorCompressor

RY02

Relay

Main Unit Control Panel

Current Sensor

Thermo. Sensor

Heat Exchanger Sensor

Initializing Circuit

(Compressor Current)

Infrared Rays Signal Receiver

Oscillator Circuit

Clock Frequency

Rays

Infrared

Remote Control

Circuit

Power

Supply

Thermo. Setting

Fan Speed Selection

Operation Mode Selection

Operation (START/STOP)

AUTO, COOL, DRY, HEAT, FAN ONLY

– 21 –

Noise Filter

ON TIMER Setting

OFF TIMER Setting

ECONO.

Louver AUTO Swing

Louver Direction Setting

AC220/230/240V ~

50Hz

RAS-10SKH-E-1 RAS-10SKH-E-1 RAS-10SKH-E-1

/

RAS-M18SAH-E

/

RAS-3M31SAH-E-1 (Lower Unit)

/

RAS-4M36SAH-E (Upper and Lower Unit)

50Hz

C. P. U

ON/OFF Signal

Compressor (A)

Compressor (B)

4-Way

Valve (A)

RY03

Relay

Driver

ON/OFF Signal

4-Way Valve (A)

4-Way

Valve (B)

RY04

Relay

ON/OFF Signal

4-Way Valve (B)

Outdoor

Fan Motor

RY06

Relay

Outdoor Fan

ON/OFF Signal

Circuit

Initializing

Oscillator Circuit

Clock Frequency

• Compressor (A), (B) Control

• 4-Way Valve (A), (B) Control

• Outdoor Fan Control

• Defrost Control

Circuit

Power Supply

AC 220/230/240V

Transformer

Relay

ON/OFF Signal

Compressor (A)

Heat Exchanger Sensor (A)

Heat Exchanger Sensor (B)

RY01

ON/OFF Signal

4-Way Valve (A)

Compressor (A)

Indoor

Unit (A)

Outdoor Fan

ON/OFF Signal

– 22 –

RY02

Relay

ON/OFF Signal

Compressor (B)

ON/OFF Signal

4-Way Valve (B)

Compressor (B)

Indoor

Unit (B)

Outdoor Fan

ON/OFF Signal

Note:

If unit (A) and (B) operation modes are different (as Cool, Heater Auto), operating priority is

given for “Heat” mode unit, and “Cool” mode unit will be stopped due to overload relay actuate.

8. OPERATION DESCRIPTIONS

8-1. FAN ONLY Operation

(MODE of the remote control : FAN ONLY) (1) During this mode, the relay R Y01 is alw a ys turned

off so that only the indoor fan is operated. RY02 is always turnd on.

1) When the FAN is set to AUTO, the indoor fan motor operates as shown in Fig. 8-1-1.

2) When the FAN is set to LOW, MED, or HIGH, the indoor fan motor operates with a constant in volume as listed in Table 8-1-1.

28 27

Room temp.

26 25 24

Fig. 8-1-1 Auto setting of air volume

Table 8-1-1 Manual setting of FAN SPEED

Indication of

FAN SPEED

HIGH

MED LOW(+)

LOW

HIGH Air volume (m3/h)

13SKH-E 10SKH-E-1

8-2. COOL Operation

(MODE of the remote control : COOL) (1) Compressor, 4-way valve, outdoor fan and

operation display are controlled as shown in Fig. 8-2-1.

+1

(Room temp. – Set temp.)

Set

0

temp.

ON

ON ON

OFF

(RY01)

Compressor

Fig. 8-2-1

(2) Relays RY01 and RY02 are turned on to energize

the outdoor unit, and a cool operation is carried out.

1) When the FAN is set to AUTO, the indoor fan motor operates as shown in Fig. 8-2-2.

2) When the FAN is set to LOW, MED, or HIGH, the indoor fan motor operates with a constant in volume as listed in Table 8-1-1.

ON

OFF

(RY02)

(RY04)

4-way valve

Common relay

Outdoor fan

(RY03)

OPERATION

display

LOW MED

HIGH

510 400 560 500 650 600

(2) Once the setting is made, the operation mode is

memorized in the microcomputer so that the same operation can be effected thereafter simply by pushing the START/STOP button.

AUTO

+4 +3 +2 +1

(Room temp. – Set temp.)

Set

0

temp.

RY01

OFF

HIGH

LOW(+)

(continuous)

Fig. 8-2-2

(3) Once the setting is made, the operation mode is

memorized in the microcomputer so that the same operation can be effected thereafter simply by pushing the START/STOP button.

– 23 –

MED

LOW LOW

FAN

Manual

According to the set

position

Toshiba RAS-4M36SAH-E, RAS-3M31SAH-E-1, RAS-10SKH-E-1 SERVICE MANUAL

CONTENTS

1. DESCRIPTION

2. SPECIFICATIONS

3. CONSTRUCTION VIEWS

4. REFRIGERANT CYCLE DIAGRAMS

5. WIRING DIAGRAM

6. SPECIFICATIONS OF ELECTRICAL PARTS