FILE NO. SVM-06020

SERVICE MANUAL

AIR CONDITIONER

SPLIT WALL TYPE

RAS-24GKHP-ES2 / RAS-24GAH-ES2

RAS-18GKHP-ES2 / RAS-18GAH-ES2

RAS-24GKP-ES2 / RAS-24GA-ES2

RAS-18GKP-ES2 / RAS-18GA-ES2

May, 2006

24 Class18 Class

CONTENTS

FILE NO. SVM-06020

1. SPECIFICATIONS

4-4 Indoor Unit (RAS-24GKP-ES2, RAS-18GKP-ES2)

2.

5-3 RAS-24GKP-ES2 / RAS-24GA-ES2

CONSTR

7-10 QUIET Mode

UCTION VIEWS

7.

2-1

OPERA

Indoor Unit

7-11 COMFORT SLEEP mode

2-2

TION DESCRIPTION

7-1

Outdoor Unit

Outline of Air Conditioner Control

(24 Class)

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 Defrosting Operation

7-7 A

2-3

uto Restar

t Function

Outdoor Unit

7-8

(18 Class)

Filter Check Lamp

7-9 Self-Cleaning function

3. WIRING DIAGRAM

3-1

3-2

RAS-24GKHP-ES2 / RAS-24GAH-ES2

3-3

RAS-18GKHP-ES2 / RAS-18GAH-ES2

RAS-24GKP-ES2 / RAS-24GA-ES2

4. SPECIFICATION OF ELECTRICAL PARTS

4-1 Indoor Unit (RAS-24GKHP-ES2, RAS-18GKHP-ES2)

4-2 Outdoor Unit (RAS-24GAH-ES2)

4-3 Outdoor Unit (RAS-18GAH-ES2)

4-5 Outdoor Unit (RAS-24GA-ES2)

4-5 Outdoor Unit (RAS-18GA-ES2)

5. REFRIGERATION CYCLE DIAGRAM

5-1

5-2

RAS-24GKHP-ES2 / RAS-24GAH-ES2

5-4

RAS-18GKHP-ES2 / RAS-18GAH-ES2

5-4

RAS-18GKP-ES2 / RAS-18GA-ES2

RAS-B18NKPX / RAS-18N2AX

6. CONTROL BLOCK DIAGRAM

6-1 RAS-24GKHP-ES2, RAS-18GKHP-ES2

6-2 RAS-24GKP-ES2, RAS-18GKP-ES2

3-3

RAS-18GKP-ES2 / RAS-18GA-ES2

- 1 -

- 2 -

• 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.

FILE NO. SVM-06020

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 How to Diagnose Faulty Part

9-6 Troubleshooting for Indoor Unit

9-7 Troubleshooting for Wiring (Interconnect cable and Serial Signal

Wire)

9-8 Troubleshooting for P.C. Board

9-9 Troubleshooting for Remote Control

10. PARTS REPLACEMENT

10-1 Indoor Unit

10-2 Outdoor Unit (RAS-24GAH-ES2, RAS-24GA-ES2)

10-3 Outdoor Unit (RAS-18GAH-ES2, RAS-18GA-ES2)

11. EXPLODED VIEWS AND PARTS LIST

11-1 Indoor Unit (E - Parts Assy)

11-2 Indoor Unit

11-3 Outdoor Unit

11-4 Outdoor Unit (RAS-18GAH-ES2)

(RAS-24GAH-ES2)

11-5 Outdoor Unit (RAS-24GA-ES2)

11-6 Outdoor Unit (RAS-18GA-ES2)

MODEL

ITEM

Capacity

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

kW 6.30 6.30 6.80 6.90 6.80

6.85

5.00 5.05 5.45

5.55

5.30

5.35

Phase 1∅

Power source V 220 - 240

Hz

50

Power consumption W 2430 2510 2400 2480 2560 2690 1850 1900 1678 1748 1860 1960

Power factor % 98 85 99 88 99 92 98 97 94 92 97 96

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

Running current A 0.3/ 0.3/

0.3/

0.3/11.75 0.3/12.20

0.3/ 0.3/ 0.3/ 0.3/

0.3/8.4 0.3/8.2

Indoor/Outdoor 11.0

11.23

8.3 7.9 7.8 7.6

Starting current A

54

36

Moisture removal lit/h 2.5 2.7 2.0 2.0

Noise

Indoor (H/M/L) dB

45/43/41/39/37

44/42/39/37/35

Outdoor (220-240V) dB 56-57 57-58 56-57 52-53 53-54 51-52

Refrigerant

Name of refrigerant R410A

Rated amount

kg

1.70

1.15

1.26

Refrigerant control Capillary tube

Gas side size mm ∅12.7

Connection type Flare connection

Liquid side size mm ∅6.35

Interconnection Connection type Flare connection

pipe Maximum length

m

15*

1

(One way) 25*

2

20*

2

Maximum height

m 8

difference

INDOOR UNIT RAS-24GKHP-ES2 RAS-24GKP-ES2 RAS-18GKHP-ES2 RAS-18GKP-ES2

Height mm 298

Dimensions Width mm 998

Depth mm 220

Net weight kg 13

Evaporator type Finned tube

Indoor fan type Cross flow fan

High fan m

3

/h 900 900 900 900 900 900

Air volume Medium fan m

3

/h 750 800 750 667 708 667

Low fan m

3

/h 625 667 625 543 584 543

Fan motor output W 30

Air filter Honeycomb woven filter with PP frame

OUTDOOR UNIT RAS-24GAH-ES2 RAS-24GA-ES2 RAS-18GAH-ES2 RAS-18GA-ES2

Height mm

715

Dimensions Width mm 780 780 780

Depth mm 290

290

Net weight kg 56 52 44 39

Condenser type Finned tube

Outdoor fan type Propeller fan

Airflow volume m

3

/h 2400 2550 2400 2550 2400 2550 2350 2450 2350 2450 2120 2200

Fan motor output W 42 42

Compressor

Model

PA290X3CS-4MU1

PA225X2CS-4KU1

Output W 2160 1500

Safety device IOL, Td Sensor IOL IOL, Td Sensor IOL

Louver type Automatic louver

Usable outdoor temperature range °C 15 ~ 43 -10 ~ 24 21 ~ 43 15 ~ 43 -10 ~ 24 21 ~ 43

1. SPECIFICATIONS

RAS-24GKHP-ES2 RAS-24GKP-ES2 RAS-18GKHP-ES2 RAS-18GKP-ES2

RAS-24GAH-ES2 RAS-24GA-ES2 RAS-18GAH-ES2 RAS-18GA-ES2

Cooling Heating Cooling Cooling Heating Cooling

10

33

10.7

0.3/

11.45

54

1.90

550

290

Note *1 Chargeless pipe

*2 Maximum pipe

FILE NO. SVM-06020

550

- 3 -

Note : 1

· Capacity is based on the following temperature conditions.

Note : 2

· Charge refrigerant according to the table below.

Refrigerant

RAS-24GKHP-ES2 / RAS-24GAH-ES2

RAS-18GKHP-ES2 / RAS-18GAH-ES2

RAS-24GKP-ES2 / RAS-24GA-ES2 RAS-18GKP-ES2 / RAS-18GA-ES2

*1

No need to charge

15m or less

extra refrigerant

*2 Need to charge

Over 15m up to 25m (20g/m) Over 15m up to 20m (20g/m)

extra refrigerant

Temperature

Condition

JIS B8615-1

Cooling Heating

Indoor unit inlet air temperature

(DB) 27°C 20°C

(WB) 19°C 15°C

Outdoor unit inlet air temperature

(DB) 35°C 7°C

(WB) 24°C 6°C

FILE NO. SVM-06020

- 4 -

2. CONSTRUCTION VIEWS

2-1. Indoor Unit

FILE NO. SVM-06020

Air outlet

Air inlet

998

220

50

75

8

Knock out system

75

56

50

Back body

Front panel

Grille inlet

298

75

7

51

Knock out system

55 or more

Minimum distance

to ceiling

100

40

48

450

20

48

100



∅65

998

298

10

763.5

5555

55

41

29

57

18

160



∅6

5

Connection pipe (0.39 m)

(Flare ∅15.88)



Connection pipe (0.49 m)

Wireless remote control

(Flare ∅6.35)

(For stud bolt ∅6)

(For stud bolt ∅8 -∅10)

Drain hose (0.54 m)

Installation

Plate outline

Outline of indoor unit

- 5 -

HANDLE

COVER-PV

HANDLE

600

Z View

Service port

321

307

A Detail Drawing (Back leg)

Ø

25 Drain outlet

2

Ø

11x14 Hole

(For

Ø

8-

Ø

10 anchor bolt)

B

Ø

6

Hole

Ø

11x14 Hole

50

36

R

15

R

5.5

Ø

6 hole

28

321

86

A

124109

6

00 or more

Air out

let

321

600

Air inlet

4x

Ø

11 Long holes(For

Ø

8-

Ø

10 anchor bolt)

Gas-side

(Flare

Ø

15.88)

Liquid side

(Flare

Ø

6.35)

90 600 90 69

342

321

Z

50

36

R

15

B Detail Drawing (Front leg)

Ø

436

FAN-GUARD

715

290

275

600 or more

84

129

54

Electrical part cover

321

307

100 or more

Installation dimension

2.2 Outdoor Unit (24 Class)

FILE NO. SVM-06020

- 6 -

321

307

Z View

600

A detail Drawing (Back leg)

321

307

Ø

25 Drain outlet

11 x 14

Hole

(For 8 -

10 anchor bolt)

B Detail Drawing (Front leg)

FAN-GUARD

COVER-PV

Electrical part cover

Liquid side

(Flare 6.35)

Ø

Gas side

(Flare 12.7)

Service port

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

Installation dimension

Air outlel

100 or more

600 or more

Air intlel

Ø

6 hole

86

Ø

6 hole

Ø

11x14 hole

R

15

28

A

321

R5.5

36

109 124

50

129

84

5

4

600

321

9060090

275

290

550

Ø

436

Z

R

15

50

36

-

2

321

342

69

Ø

2.3 Outdoor Unit (18 Class)

FILE NO. SVM-06020

- 7 -

FILE NO. SVM-06020

3. WIRING DIAGRAM

3-1.

RAS-24GKHP-ES2 / RAS-24GAH-ES2

3

1

2

10

98

7

1 2 3 4 65 10

Infrared rays receive

5 64

CN13

321

7

8 9

9871 2 3

CN25

P04BLK

4 6

WHI

5

250V6.3A

F01

DSA

Varistor

motor

Louver

BLU

ORN

5

5 2

23

3

1

RED

YEL

CN07

PNK

4

98 1071 2 3

and Indication parts

4 65

YEL

GRY

BRW

TEMP FUSE

145 C

6

5

4

1

3

2

1

3

2

+5 VDC

+12 VDC

Serial Signal

circuit

MAIN P.C. BOARD

(WP-003)

CN23

CN31

CN30

BRW

6

BLU

WP-003

BRW : BROWN

RED : RED

WHI : WHITE

YEL : YELLOW

BLU : BLUE

BLK : BLACK

GRY : GRAY

ORN : ORANGE

GRN : GREEN

GRN&YEL : GREEN & YELLOW

COLOR IDENTIFICATION

PNK : PINK

DISCHARGE

PIPE

SENSOR (TD)

HEAT

EXCHANGER

SENSOR (TE)

CN08

CN07

BLU

BLK

1

2

3

1

2

3

i

L

N

3

1

2

i

FERRITE CORE

GRN&YEL

RED

BLK

MAGNETIC

CONTACTOR

R

A1

A2

52C

U

S

V

T

W

PNK

WHI

COMPRESSOR TERMINAL

BLK

S

R

C

WHI

BLK BLK

COIL FOR

4 WAY VALVE

RED

CAPACITOR CAPACITOR

BLK

WHI

RED

CN01

CN05

GRY

1

3

5

7

9

1

3

5

7

9

GRN&YEL

CHASSIS

TRANSFORMER

BLK

RED

1

3

1

3

2

CN11

BLU

YEL

1

3

1

3

1

3

CN02

BLU

11

33

CN03

F01

250VAC T6. 3A

CR11

CR12

CR13

RY07

RY05

RY06

SG01

CN06

TNR

R74

TNR

R73

MAIN P.C. BOARD (MCC-890)

COMPRESSOR

FAN MOTOR

POWER SUPPLY

220- 240 V ~ 50 Hz

OUTDOOR

TERMINAL

BLOCK

OUTDOOR

UNIT

R

S

C

- 8 -

FILE NO. SVM-06020

3-2. RAS-18GKHP-ES2 / RAS-18GAH-ES2

DISCHARGE

PIPE

SENSOR (TD)

HEA

T

EXCHANGER

SENSOR (TE)

CN08

CN07

BLU

BLK

1

2

3

1

2

3

1

2

i

L

N

3

1

2

i

FERRITE

CORE

GRN&YEL

RED

BLK

MAGNETIC

CONTACTOR

R

A1

A2

52C

U

S

V

T

W

PNK

WHI

COMPRESSOR TERMINAL

BLK

S

R

C

WHI

BLK

COIL FOR

4 WAY VALVE

RED

RE

D

RED

CAPACITOR CAPACITOR

BLK

WHI

RED

CN01

CN05

GRY

1

3

5

7

9

1

3

5

7

9

GRN&YEL

CHASSIS

TRANSFORMER

BLK

RED

1

3

1

3

2

CN11

BLU

YEL

1

3

1

3

1

3

CN02

BLU

11

33

CN03

F01

250VAC T6. 3A

CR11

CR12

CR13

RY07

RY05

RY06

SG01

CN06

TNR

R74

TNR

R73

MAIN P.C. BOARD (MCC-890)

POWER SUPPLY

220-240 V~ 50 Hz

INDOOR

TERMINAL

BLOCK

OUTDOOR

TERMINAL

BLOCK

INDOOR

UNIT

OUTDOOR

UNIT

COMPRESSOR

FAN MOTOR

10

98

7

1 2 3 4 65 10

Infrared rays receive

5 64

CN13

321

7

8 9

9871 2 3

CN25

P04BLK

4 6

WHI

5

250V6.3A

F01

DSA

Varistor

motor

Louver

BLU

ORN

5

5 2

23

3

1

RED

YEL

CN07

PNK

4

98 1071 2 3

and Indication parts

4 65

YEL

GRY

BRW

TEMP FUSE

145 C

6

5

4

1

3

2

1

3

2

+5 VDC

+12 VDC

Serial Signal

circuit

MAIN P.C. BOARD

(WP-003)

CN23

CN31

CN30

BRW

6

BLU

WP-003

BRW : BROWN

RED : RED

WHI : WHITE

YEL : YELLOW

BLU : BLUE

BLK : BLACK

GRY : GRAY

ORN : ORANGE

GRN : GREEN

GRN&YEL : GREEN & YELLOW

COLOR IDENTIFICATION

PNK : PINK

R

S

C

- 9 -

FILE NO. SVM-06020

3

1

2

L

N

3

1

2

GRN&YEL

RED

BLK

CHASSIS

GRY

POWER SUPPLY

220 − 240 V ~ 50 Hz

SPARK KILLER

MAGNETIC CONTACTOR

BLK BLK

RED

A2 A1

52C

1/L1 2/T1

COMPRESSOR

WHI

PNK

BLK

C

S

R

CAPACITOR

WHI

RED

FAN MOTOR

BLK

COMPRESSOR TERMINAL

INDOOR

TERMINAL

BLOCK

OUTDOOR

TERMINAL

BLOCK

INDOOR

UNIT

OUTDOOR

UNIT

3/L2 4/T2

6/T35/L3

105 64321

7

8 9

5 98

7

1 2 3 4 6 10

YEL

GRY

BRW

TEMP FUSE

145 C

6

5

4

1

3

2

1

3

2

Control

Fan motor

circuit

Power supply

circuit

(TC)

sensor

Heat exchanger

(TA)

sensor

Thermo.

1

2

CN03

BLK

2

BLK

2

BLK

CN01

21

1

MAIN P.C. BOARD

(WP-003)

CN27

CN31

BRW

6

BLU

10

98

7

1 2 3 4 65 10

and Indication parts

5 64

CN13

321

7

8 9

CN25

P04

GRN&YEL

BLK

WHI

Varistor

250V

6.3A

F01

DSA

Varistor

motor

Louver

BLU

ORN

5

5 2

23

3

1

RED

YEL

CN07

PNK

4

Infrared rays receive

CN30

BRW : BROWN

RED : RED

WHI : WHITE

YEL : YELLOW

BLU : BLUE

BLK : BLACK

GRY : GRAY

ORN : ORANGE

GRN : GREEN

GRN&YEL : GREEN & YELLOW

COLOR IDENTIFICATION

PNK : PINK

R

S

C

3-3. RAS-24GKP-ES2 / RAS-24GA-ES2

- 10 -

FILE NO. SVM-06020

3

1

2

L

N

3

1

2

GRN&YEL

RED

GRY

RED

BLK

GRN&YEL

CHASSIS

POWER SUPPLY

220 − 240 V ~ 50 Hz

MAGNETIC

CONTACTOR

A1

A2

U

V

W

R

S

T

SPARK KILLER

FAN MOTOR

WHI

BLK

RED

CAPACITOR

WHI

BLK

PNK

S

R

C

CAPACITOR

COMPRESSOR

RED

INDOOR

TERMINAL

BLOCK

OUTDOOR

TERMINAL

BLOCK

INDOOR

UNIT

OUTDOOR

UNIT

COMPRESSOR TERMINAL

(or A)

(or B)

105 64321

7

8 9

5 98

7

1 2 3 4 6 10

YEL

GRY

BRW

TEMP FUSE

145 C

6

5

4

1

3

2

1

3

2

Control

Fan motor

circuit

Power supply

circuit

(TC)

sensor

Heat exchanger

(TA)

sensor

Thermo.

1

2

CN03

BLK

2

BLK

2

BLK

CN01

21

1

MAIN P.C. BOARD

(WP-003)

CN27

CN31

BRW

6

BLU

10

98

7

1 2 3 4 65 10

and Indication parts

5 64

CN13

321

7

8 9

CN25

P04

GRN&YEL

BLK

WHI

Varistor

250V

6.3A

F01

DSA

Varistor

motor

Louver

BLU

ORN

5

5 2

23

3

1

RED

YEL

CN07

PNK

4

Infrared rays receive

CN30

BRW : BROWN

RED : RED

WHI : WHITE

YEL : YELLOW

BLU : BLUE

BLK : BLACK

GRY : GRAY

ORN : ORANGE

GRN : GREEN

GRN&YEL : GREEN & YELLOW

COLOR IDENTIFICATION

PNK : PINK

R

S

C

3-4. RAS-18GKP-ES2 / RAS-184GA-ES2

- 11 -

FILE NO. SVM-06020

4. SPECIFICATION OF ELECTRICAL PARTS

4-1. Indoor Unit (RAS-24GKHP-ES2, RAS-18GKHP-ES2)

4-2. Outdoor Unit (RAS-24GAH-ES2)

No. Parts name Type Specifications

Output (Rated) 2200W, 2poles, 1 phase, 220 − 240V, 50Hz

1 Compressor PA290X3CS-4MU1 Winding resistance (Ω) Red-Black White-Black

(at 20°C) 1.13 2.10

Output (Rated) 42W, 4poles, 1 phase, 220 – 240V, 50Hz

2 Fan motor (for outdoor) FG-240-42A-1 Winding resistance (Ω) Red-Black White-Black

(at 20°C) 128 126

3

Running capacitor

451305L AC 450V, 3.0µF

(for fan motor)

4

Running capacitor

RS44B506U0218S AC 440V, 50µF

(for compressor)

5

Solenoid coil

VHV (STF) AC 220 ~ 240V

(for 4-way valve)

6 Thermo sensor TE / TD 10kΩ at 25°C / 50kΩ at 25°C

7 Magnetic contactor CLK-35J 220 ~ 240V, 50Hz

8 Transformer TT-05 220 ~ 240V

9 Microcontroller TMP47C840N

10 Varistor (R73, R74) 15G471K 470V

11 Fuse (F01) TSCR T6.3A, 250V

No. Parts name Type Specifications

1 Fan motor (for indoor) AFS-220-31-4A AC 200 − 240V, 31W

2 Thermo sensor (TA-sensor) ——— 10 kΩ at 25°C

3 Micro Power Module (M01) µRM1260V DC 390 V, Secondary DC 12 V

4 Microcontroller TMP87CM40AN

5 Heat exchanger sensor

——— 10 kΩ at 25°C

(TC-sensor)

6 Line filter (L01) LC*SS11V-06270 27mH, 600mA

7 Diode (DB01) D3SBA60 4 A, 600 V

8 Capacitor (C63) EKMH401VSN470MP20S 4.7µF, 400 V

9 Fuse (F01) BET6.3A T6.3 A, 250 V

10 Varistor (R21, R22) TND15G561K 560 V

11 Resistor (R319) RF-2TK5R6 5.6Ω , 2 W

12 Louver motor 35BYJ46 Output (Rated) 2 W, 10 poles, 1 phase,

DC 12 V

- 12 -

FILE NO. SVM-06020

4-3. Outdoor Unit (RAS-18GAH-ES2)

Output (Rated) 1500W, 2poles, 1 phase, 220 − 240V, 50Hz

1 Compressor PA225X2CS-4KU1 Winding resistance (Ω) Red-Black White-Black

(at 20°C) 1.54 2.48

Output (Rated) 42W, 4poles, 1 phase, 220 – 240V, 50Hz

2 Fan motor (for outdoor) FG-240-42A-1 Winding resistance (Ω) Red-Black White-Black

(at 20°C) 128 126

3

Running capacitor

451305L AC 450V, 3.0 µF

(for fan motor)

4

Running capacitor

RS44B506U0218S AC 440V, 50µF

(for compressor)

5

Solenoid coil

VHV (STF) AC 220 − 240V

(for 4-way valve)

6 Thermo sensor TE / TD 10kΩ at 25°C / 50kΩ at 25°C

7 Magnetic contactor CLK-26J 220 − 240V, 50Hz

8 Transformer TT-05 220 − 240V

9 Microcomputer TMP47C840N

No. Parts name Type Specifications

10 Varistor (R73, R74) 15G471K 470V

11 Fuse (F01) TSCR T6.3A, 250V

4-4. Indoor Unit (RAS-24GKP-ES2, RAS-18GKP-ES2)

No. Parts name Type Specifications

1 Fan motor (for indoor) AFS-220-31-4A AC 200 − 240V, 31W

2 Thermo sensor (TA-sensor) ——— 10 kΩ at 25°C

3 Micro Power Module (M01) µRM1260V DC 390 V, Secondary DC 12 V

4 Microcontroller TMP87CM40AN

5 Heat exchanger sensor

——— 10 kΩ at 25°C

(TC-sensor)

6 Line filter (L01) LC*SS11V-06270 27mH, 600mA

7 Diode (DB01) D3SBA60 4 A, 600 V

8 Capacitor (C63) KMH400VSSN47M22S 4.7µF, 400 V

9 Fuse (F01) BET6.3A T6.3 A, 250 V

10 Varistor (R21, R22) TND15G561K 560 V

11 Resistor (R319) RF-2TK5R6 5.6Ω, 2 W

12 Louver motor

35BYJ46 Output (Rated) 2 W, 10 poles, 1 phase,

DC 12 V

13 Relay : (RY04) G5NB-1A Coil DC 12V, 16.7mA, Contact AC 250V, 1A

- 13 -

FILE NO. SVM-06020

4-5. Outdoor Unit (RAS-24GA-ES2)

No. Parts name Type Specifications

Output (Rated) 2200W, 2poles, 1 phase, 220 − 240V, 50Hz

1 Compressor PA290X3CS-4MU1 Winding resistance (Ω  ) Red-Black White-Black

(at 20°C) 1.13 2.10

Output (Rated) 42W, 4poles, 1 phase, 220 − 240V, 50Hz

2 Fan motor (for outdoor) FG-240-42A Winding resistance (Ω) Red-Black White-Black

(at 20° C) 128 126

3

Running capacitor

451305L AC 450V, 3.0µ F

(for fan motor)

4

Running capacitor

RS44B506U0218S

AC 440V, 50µ F

(for compressor)

5

Magnetic contactor

CLK-35J

220 − 240V, 50Hz

4-6. Outdoor Unit (RAS-18GA-ES2)

No. Parts name Type Specifications

Output (Rated) 1500W, 2poles, 1 phase, 220 − 240V, 50Hz

1 Compressor PA225X2CS-4KU1 Winding resistance (Ω) Red-Black White-Black

(at 20°C ) 1.54 2.48

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

2 Fan motor (for outdoor) WLF-240-42A-1 Winding resistance (Ω) Red-Black White-Black

(at 20°C) 188 289

3

Running capacitor

451205L AC 450V, 2.0µF

(for fan motor)

4

Running capacitor

RS44B506U0218S AC 440V, 50µF

(for compressor)

5

Magnetic contactor

CLK-26J

220 − 240V, 50Hz

- 14 -

FILE NO. SVM-06020

5. REFRIGERATION CYCLE DIAGRAM

5-1. RAS-24GKHP-ES2 / RAS-24GAH-ES2

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.

Ambient temp.

conditions DB/WB

(°C)

Indoor Outdoor

Standard 3.0 48.2 High 20/– 7/6

Heating Overload*1 3.93 56.4 Low 27/– 24/18

Low temperature 2.17 38.4 High 20/– –10/–10

Standard 3.03 8.7 High 27/19 35/24

Cooling Overload 4.02 12.1 High 32/23 43/26

Low temperature 2.1 0.3 Low 21/15 21/15

Standard

pressure

P

(MPaG)

Surface temp. of heat

exchanger interchanging

pipe

T1

(°C)

Fan speed

(indoor)

50Hz

Heat exchanger

Indoor unit

Cross flow fan

Cooling

Heating

4-way valve

Heating

Cooling

Compressor

Condenser

Propeller fan

Outdoor unit

PA290X3CS-4MU1

Cooling

Heating

Mark(

)means check points of Gas Leak.

O.D.:12.7mm

O.D.:6.35mm

Cooling

Heating

Packed valve

Gas container connection (Reinstall etc.)

(∅

12.7)

Packed valve

(∅

6.35)

0.

3

9m

(Connecting pipe)

∅

12.7

0.

49m

(Connecting pipe)

∅

6.35

T1

P

Refrigerant

R410A 1.

90 kg

Tank

Main

∅

2.0x1500

s

- 15 -

FILE NO. SVM-06020

5-2. RAS-18GKHP-ES2 / RAS-18GAH-ES2

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.

Ambient temp.

conditions DB/WB

(°C)

Indoor Outdoor

Standard 2.6 44.7 High 20/– 7/6

Heating Overload*1 3.0 ~ 3.6 49.0 ~ 56.0 Low 27/– 24/18

Low temperature 2.0 32.0 High 20/––10/–10

Standard 0.9 9.5 High 27/19 35/24

Cooling Overload 1.1 12.6 High 32/23 43/26

Low temperature 0.7 2.4 Low 21/15 21/15

Fan speed

(indoor)

50Hz

Standard

pressure

P

(MPaG)

Surface temp. of heat

exchanger interchanging

pipe

T1

(°C)

Indoor unit

Cross flow fan

Cooling

Heating

4-way valve

Heating

Cooling

Compressor

Condenser

Propeller fan

Outdoor unit

PA225X2CS-4KU1

Cooling

Heating

Mark(

)means check points of Gas Leak.

O.D.:12.7mm

O.D.:6.35mm

Cooling

Heating

Packed valve

(

∅

12.7)

Packed valve

(

∅

6.35)

0.39m

(Connecting pipe)

∅

12.7

0.49m

(Connecting pipe)

∅

6.35

T1

P

Refrigerant

R410A 1.

15 kg

Accumulator

Evaporator

Capillary tube

∅

2.0x1200

s

- 16 -

FILE NO. SVM-06020

5-3. RAS-24GKP-ES2 / RAS-24GA-ES2

Note :

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

Ambient temp.

conditions DB/WB

(° C)

Indoor Outdoor

Standard 3.183 7.0 High 27/19 35/24

Cooling Overload 4.040 11.7 High 32/23 43/26

Low temperature 1.651 -0.4 Low 21/15 21/15

Fan speed

(indoor)

50Hz

Standard

pressure

P

(MPaG)

Surface temp. of heat

exchanger interchanging

pipe

T1

(° C)

Heat exchanger

Indoor unit

Cross flow fan

Compressor

Condenser

Propeller fan

Outdoor unit

PA290X3CS-4MU1

Cooling

Mark(

)means check points of Gas Leak.

O.D.:12.7mm

O.D.:6.35mm

Cooling

Packed valve

Gas container connection (Reinstall etc.)

(∅

12.7)

Packed valve

(

∅

6.35)

0.39m

(Connecting pipe)

∅

12.7

0.49m

(Connecting pipe)

∅

6.35

T1

P

Refrigerant

R410A 1.70kg

Capillary tube

∅

2.0x900

s

Cooling

Accumulator

- 17 -

FILE NO. SVM-06020

5-4. RAS-18GKP-ES2 / RAS-18GA-ES2

Note :

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

Ambient temp.

conditions DB/WB

(°C)

Indoor Outdoor

Standard 1.1 10.0 High 27/19 35/24

Cooling Overload 1.2 13.0 High 32/23 43/26

Low temperature 0.6 2.0 Low 21/15 21/15

Fan speed

(indoor)

50Hz

Standard

pressure

P

(MPaG)

Surface temp. of heat

exchanger interchanging

pipe

T1

(°C)

Indoor unit

Cross flow fan

Cooling

Compressor

Condenser

Propeller fan

Outdoor unit

PA225X2CS-4KU1

Cooling

Mark(

)means check points of Gas Leak.

O.D.:12.7mm

O.D.:6.35mm

Cooling

Packed valve

(

∅

12.7)

Packed valve

(

∅

6.35)

0.39m

(Connecting pipe)

∅

12.7

0.49m

(Connecting pipe)

∅

6.35

T1

P

Refrigerant

R410A 1.

26 kg

Evaporator

Capillary tube

∅

1.7x400

s

- 18 -

FILE NO. SVM-06020

6. CONTROL BLOCK DIAGRAM

6-1. RAS-24GKHP-ES2, RAS-18GKHP-ES2

REMOTE CONTROL

Indoor Unit Control Panel

Heat Exchanger Sensor

Temperature Sensor

Infrared Rays Signal Receiver

Initiallizing Circuit

Clock Frequency

Oscillator Circuit

Power Supply

Circuit

Noise Filter

From Outdoor Unit

220 ~ 240 V AC 50 Hz

M.C.U.

Functions

• Louver Control

• 3-minute Delay at Restart for Compressor

• Motor Revolution Control

• Processing

• Timer

• Serial Signal Communication

Louver ON/OFF Signal

Louver Driver

Serial Signal Transmitter/Receiver

Serial Signal Communication

Operation

Display

Timer

Display

Filter Sign

Display

PRE DEF.

Sign Display

Indoor

Fan Motor

Hi Power

Sign Display

Louver Motor

Infrared

Rays

Remote

Control

(Temperature Processing)

Operation ( )Operation ( )

Remote Control

Operation Mode Selection

AUTO, COOL, DRY, HEAT, FAN ONLY

Temperature Setting

Fan Speed Selection

ON TIMER Setting

OFF TIMER Setting

Louver Auto Swing

Louver Direction Setting

ECO

Hi power

TIMER 1.3.5.9H

Infrared Rays

COMFORT SLEEP

QUIET

- 19 -

FILE NO. SVM-06020

6-2. RAS-24GKP-ES2, RAS-18GKP-ES2

Heat Exchanger Sensor

Relay RY04

Outdoor Unit

Outdoor unit

ON/OFF Signal

Relay Driver

Indoor Unit Control Panel

Temperature Sensor

Infrared Rays Signal Receiver

Initiallizing Circuit

Clock Frequency

Oscillator Circuit

Power Supply

Circuit

Noise Filter

From Outdoor Unit

220 ~ 240V AC 50Hz

M.C.U.

Functions

 Louver Control

 3-minute Delay at Restart for Compressor

 Motor Revolution Control

 Processing

 Timer

Louver ON/OFF Signal

Louver Driver

Operation

Display

Timer

Display

Filter Sign

Display

Fan Only

Sign Display

Indoor

Fan Motor

Hi Power

Sign Display

Louver Motor

Infrared

Rays

Remote

Control

(Temperature Processing)

REMOTE CONTROL

Operation ( )Operation ( )

Remote Control

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

ECO

Hi power

TIMER 1.3.5.9H

Infrared Rays

COMFORT SLEEP

QUIET

- 36 -

FILE NO. SVM-06020

7. OPERATION DESCRIPTION

7-1-1. Louver contr

ol

(1) Vertical air flow louver

Position of veritcal air flow louver is automatically

controlled according to the operation mode.

Besides, position of vertical air flow louver can be

arbitrarily set by pressing [FIX] button.

The louver position which is set by [FIX] button is

stored in the microcomputer, and the louver is

automatically set at the stored position for the next

operation.

(2) Swing

If [SWING] button is pressed when the indoor unit

is in operation, the vertical air flow louver starts

swinging. When [FIX] button is pressed, it stops

swinging.

7-1-2. 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.

7-1.Outline of Air Conditioner Control

This is a fixed capacity type air conditioner, which uses

a AC motor for an indoor fan. The AC motor drive

circuit is mounted in the indoor unit. And electrical

parts which operate the compressor and the outdoor

fan motor, are mounted in the outdoor unit.

The air conditioner is mainly controlled by the indoor

unit controller. The controller operates the indoor fan

motor based upon commands transmitted by the

remote control and transfers the operation commands

to the outdoor unit controller.

The outdoor unit controller receives operation

commands from the indoor unit, and operates the

outdoor fan motor and the compressor.

(1) Role of indoor unit controller

The indoor unit controller receives the operation

commands from the remote control and executes

them.

· Temperature measurement at the air inlet of the

indoor heat exchanger by the indoor

temperature sensor

· Temperature setting of the indoor heat

exchanger by the heat exchanger sensor

· Louver motor control

· Indoor fan motor operation control

· LED display control

· T ransferring of operation commands to the

outdoor unit

· Receiving of information of the operation status

and judging of the information or indication of

error

(2) Role of outdoor unit controller

The outdoor unit controller receives the operation

commands from the indoor controller and

executes them.

· Compressor operation

control

· Operation control of

outdoor fan motorf

·

when the outdoor unit receives the shutdown

command

· Defrost control in heating operation

(Temperature measurement by the outdoor heat

exchanger and control for the four-way valve

and the outdoor fan motor) *Heat pump Model

only

Turning off the compressor and outdoor fan

Operations according

to the commands

from the indoor unit

Cooling

OPERATION

Fan Only

Dry

MODE

1300

RAS-24GKHP Series

Model

RAS-18GKH Series

FAN TAP

RAS-24GKP Series

RAS-18GKP Series

Heat

rpm

Air Flow volume(m /h)

3

rpm

Air Flow volume(m /h)

3

rpm

Air Flow volume(m /h)

3

rpm

Air Flow volume(m /h)

3

UH H

M+

M L+

L L- UL SUL/SL-

SUL/SL-

UL

L-LL+

MUH H

H M+ M

L+

L L-

UL SUL

M+ M

900

13001300

900

1300

900

1300

900

1250 1200

1150 1050 1000 900 800 700

600

380

300

L+

L L-

600

500

300

220

700

380

600

300

461

700

380

800

461

700

380

543

800

461

900

543

800

461

625

900

543

1000

625

900

543

667

950

584

1050

667

950

584

750

1050

667

1150

750

1050

667

790

1150

750

1250

830

1150

750

830

Note : Under some function of setting. The fan motor is controlled automatically.

Then LOW

+

= LOW + MED and MED

+

= MED + HIGH

2

Table 7-1-1

2

−

1100

708

- 20 -

FILE NO. SVM-06020

7-2. Description of Operation Circuit

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

blinks. This means that the power is on (or the

power supply is cut off.)

(2) When pressing [ ] button on the

remote control, receiving beep sounds from the

indoor unit, and the next operation is performed

together with opening the vertical air flow louver.

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

the microcomputer so that the previous operation

can be effected thereafter simply by pressing

[ ] button.

7-2-1. 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

+

, MED, MED

+

or

HIGH, the motor operates with a constant air flow.

NOTE :

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

controlled by the difference in motor speed

between M+ and L-.

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

(2)

The Hi Power, ECO and COMFORT SLEEP

operation cannot be set.

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 lamp are controlled as shown in

Fig. 7-2-2.

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.

NOTE :

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

controlled by the difference in motor speed

between M+ and L-.

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

(Preset temp.: 24°C)

+2

+2.5

+3

+1.5

+1

+0.5

0

M+

*1

(Room temp.)

-

(Preset temp.)

Preset

temp.

*1

+3

+2.5

+2

+1.5

+1

+0.5

-0.5

0

M+

(Room temp.)

-

(Preset temp.)

Preset

temp.

0.5

0

Preset

temp.

ON

OFF OFF OFF ON

Compressor

4-way valve

Outdoor fan

OPERATION

display lamp

(Heat pump model)

- 21 -

FILE NO. SVM-06020

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

([MODE] button on the remote control is set

to the heating operation.)

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

operation display lamp are controlled as shown in

Fig. 7-2-6.

Fig. 7-2-6

(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.

*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 flo w [FAN:AUTO]

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 lamp are controlled as shown in

Fig. 7-2-4.

Fig. 7-2-4

(2) The microprocessor turns the compressor on and

off at the regular intervals (4 to 6 minutes). While

the compressor is turning off, the indoor fan motor

operates in the SUPER LOW position.

The pattern of operation depending on the relation

between room temperature and preset

temperatures is shown in Fig. 7-2-5.

Fig. 7-2-5

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

only.

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

Preset

temp.

OFF

ON

+3

+2

+1

0

OFF

4-way valve

Outdoor fan

OPERATION

Compressor

ON:6min.

OFF:4min.

ON:5min.

OFF:5min.

OFF

ON:6min.

OFF:4min.

ON:5min.

OFF:5min.

display lamp

Room temp.

Preset temp.+1

Preset temp.

Compressor

Outdoor fan

Indoor fan

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

ON ON ON ON

OFF OFF OFF

*Super Low

ON

OFF

ON

OFF

ON

4-way valve

Outdoor fan

Compressor

Preset

temp.

OPERATION

display lamp

[FAN AUTO]

-0.5

-1

-1.5

-2

*1

*2

-5.0

-5.5

0

Preset

temp.

M

+

H

L

- 22 -

Toshiba RAS-18GKHP-ES2, RAS-18GAH-ES2, RAS-18GA-ES2, RAS-24GKHP-ES2, RAS-24GKP-ES2 SERVICE MANUAL

1. SPECIFICATIONS

2. CONSTRUCTION VIEWS

3. WIRING DIAGRAM

4. SPECIFICATION OF ELECTRICAL PARTS

5. REFRIGERATION CYCLE DIAGRAM

6. CONTROL BLOCK DIAGRAM

7. OPERATION DESCRIPTION