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

SERVICE MANUAL

AIR CONDITIONER

SPLIT WALL TYPE

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

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

FILE NO. SVM-06020

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

24 Class18 Class

May, 2006

CONTENTS

1. SPECIFICATIONS

2.

CONSTR

2-1 2-2 2-3

3. WIRING DIAGRAM

3-1 3-2 3-3

3-3

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)

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

4-5 Outdoor Unit (RAS-24GA-ES2) 4-5 Outdoor Unit (RAS-18GA-ES2)

UCTION VIEWS

Indoor Unit Outdoor Unit Outdoor Unit

RAS-24GKHP-ES2 / RAS-24GAH-ES2 RAS-18GKHP-ES2 / RAS-18GAH-ES2

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

(24 Class) (18 Class)

FILE NO. SVM-06020

5. REFRIGERATION CYCLE DIAGRAM

5-1

RAS-24GKHP-ES2 / RAS-24GAH-ES2 RAS-18GKHP-ES2 / RAS-18GAH-ES2

5-2

5-3 RAS-24GKP-ES2 / RAS-24GA-ES2 5-4

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

RAS-B18NKPX / RAS-18N2AX

5-4

6. CONTROL BLOCK DIAGRAM

6-1 RAS-24GKHP-ES2, RAS-18GKHP-ES2 6-2 RAS-24GKP-ES2, RAS-18GKP-ES2

7.

OPERA

7-1 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 7-8 7-9 Self-Cleaning function 7-10 QUIET Mode 7-11 COMFORT SLEEP mode

TION DESCRIPTION

Outline of Air Conditioner Control

uto Restar t Function

Filter Check Lamp

- 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 How to Diagnose Faulty Part 9-6 Troubleshooting for Indoor Unit 9-7 Troubleshooting for Wiring (Interconnect cable and Serial Signal 9-8 Troubleshooting for P.C. Board 9-9 Troubleshooting for Remote Control

FILE NO. SVM-06020

Wire)

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) 11-5 Outdoor Unit (RAS-24GA-ES2) 11-6 Outdoor Unit (RAS-18GA-ES2)

(RAS-24GAH-ES2)

• 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-06020

MODEL

ITEM

Capacity

Phase 1∅

Power source V 220 - 240

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

Running current A 0.3/ 0.3/

Indoor/Outdoor 11.0 Starting current A Moisture removal lit/h 2.5 2.7 2.0 2.0

Noise

Refrigerant

Refrigerant control Capillary tube

Interconnection Connection type Flare connection pipe Maximum length

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

Dimensions Width mm 998

Net weight kg 13 Evaporator type Finned tube Indoor fan type Cross flow fan

Air volume Medium fan m3/h 750 800 750 667 708 667

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

Dimensions Width mm 780 780 780

Net weight kg 56 52 44 39 Condenser type Finned tube Outdoor fan type Propeller fan Airflow volume m3/h 2400 2550 2400 2550 2400 2550 2350 2450 2350 2450 2120 2200 Fan motor output W 42 42

Compressor

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

Note *1 Chargeless pipe

*2 Maximum pipe

Indoor (H/M/L) dB Outdoor (220-240V) dB 56-57 57-58 56-57 52-53 53-54 51-52 Name of refrigerant R410A Rated amount

Gas side size mm ∅12.7 Connection type Flare connection Liquid side size mm ∅6.35

(One way) 25* Maximum height

difference

Height mm 298

Depth mm 220

High fan m3/h 900 900 900 900 900 900

Low fan m3/h 625 667 625 543 584 543

Height mm

Depth mm 290

Model

PA290X3CS-4MU1

Output W 2160 1500

45/43/41/39/37

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

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

kW 6.30 6.30 6.80 6.90 6.80

Hz

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

0.3/

11.23

10.7

54

kg

m

m 8

1.90

0.3/11.75 0.3/12.20

11.45

2

10

715

6.85

54

1.70

PA225X2CS-4KU1

5.00 5.05 5.45

50

0.3/ 0.3/ 0.3/ 0.3/

8.3 7.9 7.8 7.6

1

15*

5.55

5.30

0.3/8.4 0.3/8.2

36

44/42/39/37/35

1.15

2

20*

550

290

5.35

33

1.26

550

290

- 3 -

Note : 1

· Capacity is based on the following temperature conditions.

FILE NO. SVM-06020

Condition

Temperature

Indoor unit inlet air temperature

Outdoor unit inlet air temperature

Note : 2

· Charge refrigerant according to the table below.

Refrigerant

*1

No need to charge extra refrigerant

*2 Need to charge

extra refrigerant

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

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

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

(DB) 27°C 20°C

(WB) 19°C 15°C

(DB) 35°C 7°C

(WB) 24°C 6°C

15m or less

JIS B8615-1

Cooling Heating

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

15m or less

- 4 -

2-1. Indoor Unit

FILE NO. SVM-06020

2. CONSTRUCTION VIEWS

75

7

51

Knock out system

Back body Front panel

Grille inlet

298

Air inlet

Air outlet

998

75

56

220

Knock out system

50

75

8

Connection pipe (0.39 m) (Flare ∅15.88)

Outline of indoor unit

55 or more

Minimum distance

to ceiling

298

∅65



100

20



48

998

763.5 450

Installation Plate outline

- 5 -

Drain hose (0.54 m)

Connection pipe (0.49 m) (Flare ∅6.35)

20

10

100

57

Wireless remote control

(For stud bolt ∅6) (For stud bolt ∅8 -∅10)

29

41 55 5555



∅6

40

5

160

18

48

2.2 Outdoor Unit (24 Class)

28

600

50 36

R

15

FILE NO. SVM-06020

A

124109

6 hole

321

307

Ø

R

5.5

A Detail Drawing (Back leg)

HANDLE

290

321

Ø

715

86

25 Drain outlet

FAN-GUARD

436

275

90 600 90 69

2Ø11x14 Hole (For

Ø8-Ø

10 anchor bolt)

B

307

321

Hole

6

Ø

11x14 Hole

Ø

36 50

B Detail Drawing (Front leg)

321 342

R

15

HANDLE

COVER-PV

Z

100 or more

321

100 or more

Z View

600

Air inlet

Air out

let

00 or more

6

Installation dimension

600 or more

4x

54

129

84

11 Long holes(For

Ø

Service port

10 anchor bolt)

Ø8-Ø

Electrical part cover

Liquid side (Flare Ø6.35)

Gas-side (Flare Ø15.88)

- 6 -

2.3 Outdoor Unit (18 Class)

28

600

50

36

321

307

A detail Drawing (Back leg)

R5.5

R

Ø

15

6 hole

86

321

Ø

FAN-GUARD

436

Ø

A

25 Drain outlet

109 124

2

-

Ø

11 x 14

(For 8 -

Ø

Hole

10 anchor bolt)

FILE NO. SVM-06020

307

321

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

Service port

Z View

9060090

69

129

84

100 or more

321

100 or more

600

Air intlel

Air outlel

600 or more

Installation dimension

- 7 -

600 or more

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

Ø

3. WIRING DIAGRAM

3-1. RAS-24GKHP-ES2 / RAS-24GAH-ES2

COLOR IDENTIFICATION

BRW : BROWN RED : RED WHI : WHITE YEL : YELLOW BLU : BLUE BLK : BLACK GRY : GRAY

PNK : PINK ORN : ORANGE GRN : GREEN GRN&YEL : GREEN & YELLOW

CN30 CN31

P04BLK

DSA

Varistor

F01

250V6.3A

MAIN P.C. BOARD (WP-003)

Louver motor

BLU

PNK

6

5 223311 5

6

FILE NO. SVM-06020

Infrared rays receive

and Indication parts

BLU

RED

YEL

BRW

ORN

4

CN07

4

BLU

1 2 3 4 65 10

98 1071 2 3

4 65 4 6

5

BLU

5 64

321

CN25

10

9871 2 3

BLU

WHI

98

7

CN13

10

8 9

7

+12 VDC

+5 VDC

WP-003

OUTDOOR TERMINAL BLOCK

C

S

R

COMPRESSOR TERMINAL

POWER SUPPLY 220- 240 V ~ 50 Hz

L

BLK

RED

BLK

RED

WHI PNK

COMPRESSOR

i

N

FERRITE CORE

RED

MAGNETIC

CONTACTOR

R

S

1

GRN&YEL

T

A1

CN23

2

3

GRN&YEL

i

CHASSIS

Serial Signal

OUTDOOR UNIT

52C

BLK

A2

W

RED

WHI RED

FAN MOTOR

U

V

CAPACITOR CAPACITOR

S

C

R

GRY

BRW

BLK BLK

RED RED

BLK BLK WHI RED GRY

BLU

YEL

BLU

BLU COIL FOR 4 WAY VALVE

YEL

1

2

1

2

145 C

TEMP FUSE

1

1 2

CN06

3

1

CN05

3

SG01

1

3

250VAC T6. 3A

5

CN01

7

9

1

CN11

313

11

CN02

33

circuit

TRANSFORMER

BLK BLK

4

3

66554

3

MAIN P.C. BOARD (MCC-890)

TNR R74

F01

TNR R73

RY07

CR11

RY05

CR12

CR13

CN03

1 1

RY06

3

CN07

CN08

DISCHARGE PIPE SENSOR (TD)

BLU

1

1 2 3

3

BLU

BLK

1

1 2 3

3

BLK

HEAT EXCHANGER SENSOR (TE)

- 8 -

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

COLOR IDENTIFICATION

BRW : BROWN RED : RED WHI : WHITE YEL : YELLOW BLU : BLUE BLK : BLACK GRY : GRAY

PNK : PINK ORN : ORANGE GRN : GREEN GRN&YEL : GREEN & YELLOW

CN30 CN31

P04BLK

DSA

Varistor

F01

250V6.3A

MAIN P.C. BOARD (WP-003)

Louver motor

BLU

PNK

6

5 223311 5

6

FILE NO. SVM-06020

Infrared rays receive

and Indication parts

BLU

RED

YEL

ORN

BRW

4

CN07

4

BLU

1 2 3 4 65 10

98 1071 2 3

4 65 4 6

5

BLU

5 64

321

CN25

10

9871 2 3

WHI

BLU

98

7

CN13

10

8 9

7

+12 VDC

+5 VDC

WP-003

OUTDOOR TERMINAL BLOCK

C

S

R

COMPRESSOR TERMINAL

POWER SUPPLY 220-240 V~ 50 Hz

L

BLK

RED

BLK

RED

WHI PNK

COMPRESSOR

CN23

INDOOR TERMINAL BLOCK

i

N

FERRITE CORE

RED

MAGNETIC

CONTACTOR

R

S

1

GRN&YEL

T

A1

2

3

2

3

i

CHASSIS

INDOOR UNIT

OUTDOOR UNIT

GRN&YEL

52C

BLK

A2

W

RED

WHI

D

RE

FAN MOTOR

U

V

CAPACITOR CAPACITOR

S

C

R

Serial Signal

circuit

TRANSFORMER

YEL

BLK

RED

BLK

WHI

RED

GRY

BLU

YEL

BLU

BLU COIL FOR 4 WAY VALVE

BLK

GRY

BRW

1

3

1

3

1

3

5

7

9

1

313

11

33

1

2

4

3

1

2

66554

3

145 C

TEMP FUSE

MAIN P.C. BOARD (MCC-890)

1 2

CN06

3

1

CN05

3

1

3

5

CN01

7

9

SG01

F01

250VAC T6. 3A

TNR R74

CN11

CR11

CN02

CR12

CR13

CN03

1 1

BLK

RY07

RY05

3

TNR R73

RY06

CN07

CN08

DISCHARGE PIPE SENSOR (TD)

BLU

1

1 2 3

3

BLU

BLK

1

2 3

3

BLK

HEA

T

EXCHANGER SENSOR (TE)

- 9 -

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

COLOR IDENTIFICATION

BLK

CN27

BRW : BROWN RED : RED WHI : WHITE YEL : YELLOW BLU : BLUE BLK : BLACK GRY : GRAY

PNK : PINK ORN : ORANGE GRN : GREEN GRN&YEL : GREEN & YELLOW

P04

6.3A

CN30 CN31

DSA F01

Varistor

250V

Varistor

Louver motor

BLU

PNK

6

5 223311

6

5

FILE NO. SVM-06020

Infrared rays receive

and Indication parts

1 2 3 4 6 10

BLU

YEL

RED

BRW

ORN

4

CN07

4

BLU

1 2 3 4 65 10

321

Power supply circuit

Control Fan motor circuit

7

5 98

7

BLU

7

5 64

7

105 64321

8 9

CN25

BLU

WHI

98

CN13

10

8 9

OUTDOOR TERMINAL BLOCK

INDOOR TERMINAL BLOCK

POWER SUPPLY 220 − 240 V ~ 50 Hz

L

N

BLK

RED

BLK

RED

1

BLK BLK

SPARK KILLER

A2 A1

52C

1/L1 2/T1

3/L2 4/T2

6/T35/L3

GRN&YEL

2

GRN&YEL

RED

CAPACITOR

3

GRY

CHASSIS

RED

WHI PNK

COMPRESSOR

MAIN P.C. BOARD (WP-003)

INDOOR UNIT

OUTDOOR UNIT

CAPACITOR

S

C

R

WHI RED

FAN MOTOR

BLK

C

S

COMPRESSOR TERMINAL

2

1

21

1

GRY

BRW

YEL

1

2

6

4

3

1

2

6

554

3

145 C

TEMP FUSE

BLK2BLK

Thermo. sensor

(TA)

CN03

Heat exchanger sensor

(TC)

CN01

2

1

BLK

R

MAGNETIC CONTACTOR

- 10 -

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

COLOR IDENTIFICATION

BRW : BROWN RED : RED WHI : WHITE YEL : YELLOW

BLK

GRN&YEL

BLU : BLUE BLK : BLACK GRY : GRAY PNK : PINK ORN : ORANGE GRN : GREEN GRN&YEL : GREEN & YELLOW

P04

CN30 CN31

CN27

6.3A

Varistor

DSA F01

250V

MAIN P.C. BOARD (WP-003)

Varistor

Louver motor

BLU

YEL

PNK

6

5 223311

4

6

5

4

FILE NO. SVM-06020

Infrared rays receive

and Indication parts

5 98

1 2 3 4 6 10

BLU

RED

BRW

ORN

CN07

Power supply

circuit

Control Fan motor circuit

GRY

BRW

YEL

BLU

1 2 3 4 65 10

5 64

321

105 64321

8 9

7 7

BLU

7 7

8 9

CN25

BLU

WHI

98

CN13

10

2

1

21

1

BLK2BLK

CN03

CN01

2

1

BLK

OUTDOOR TERMINAL BLOCK

POWER SUPPLY 220 − 240 V ~ 50 Hz

L

BLK

MAGNETIC

CONTACTOR

BLK

RED

INDOOR

TERMINAL

BLOCK

N

RED

R

U

1

GRN&YEL

S

V

2

RED

SPARK KILLER

T

W

BLK

1

2

4

3

1

2

66554

3

145 C

TEMP FUSE

GRN&YEL

GRY

INDOOR UNIT

OUTDOOR UNIT

3

BLK

CHASSIS

(or A)

A1

(or B)

A2

Thermo. sensor

(TA)

Heat exchanger sensor

(TC)

CAPACITOR

RED

S

WHI PNK

R

COMPRESSOR

S

COMPRESSOR TERMINAL

CAPACITOR

RED

C

BLK

WHI

RED

BLK

FAN MOTOR

C

R

- 11 -

FILE NO. SVM-06020

4. SPECIFICATION OF ELECTRICAL PARTS

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

(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,

——— 10 kΩ at 25°C

DC 12 V

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

Running capacitor 3

(for fan motor)

Running capacitor 4

(for compressor)

Solenoid coil 5

(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

451305L AC 450V, 3.0µF

RS44B506U0218S AC 440V, 50µF

VHV (STF) AC 220 ~ 240V

- 12 -

FILE NO. SVM-06020

4-3. Outdoor Unit (RAS-18GAH-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, 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

Running capacitor 3

(for fan motor)

Running capacitor 4

(for compressor)

Solenoid coil 5

(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

10 Varistor (R73, R74) 15G471K 470V 11 Fuse (F01) TSCR T6.3A, 250V

451305L AC 450V, 3.0 µF

RS44B506U0218S AC 440V, 50µF

VHV (STF) AC 220 − 240V

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

(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

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

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

——— 10 kΩ at 25°C

DC 12 V

- 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

Running capacitor

3

(for fan motor) Running capacitor

4

(for compressor)

5

Magnetic contactor

CLK-35J

451305L AC 450V, 3.0µ F

RS44B506U0218S

AC 440V, 50µ F

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

Running capacitor

3

(for fan motor) Running capacitor

4

(for compressor)

5

Magnetic contactor

451205L AC 450V, 2.0µF

RS44B506U0218S AC 440V, 50µF

CLK-26J

220 − 240V, 50Hz

- 14 -

5. REFRIGERATION CYCLE DIAGRAM

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

FILE NO. SVM-06020

0.39m (Connecting pipe)

12.7

∅

O.D.:12.7mm

Cooling

Heating

Tank

Indoor unit

Cooling

Heating

P

Packed valve

(∅

12.7)

Gas container connection (Reinstall etc.)

Heating

4-way valve

Cooling

Compressor

PA290X3CS-4MU1

Heat exchanger

Cross flow fan

T1

Packed valve

(∅

6.35)

Main

2.0x1500

∅

s

0.

49m

(Connecting pipe)

6.35

∅

O.D.:6.35mm

Condenser

Cooling Heating

Propeller fan

Outdoor unit

Mark(

Refrigerant R410A 1.

)means check points of Gas Leak.

90 kg

Ambient temp.

50Hz

Standard

pressure

(MPaG)

P

Surface temp. of heat

exchanger interchanging

pipe

T1

(°C)

Fan speed

(indoor)

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

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.

- 15 -

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

FILE NO. SVM-06020

0.39m (Connecting pipe)

∅

12.7

O.D.:12.7mm

Cooling

Heating

Indoor unit

Cooling

Heating

P

Packed valve

(

∅

Heating

4-way valve

Cooling

Compressor

12.7)

PA225X2CS-4KU1

Accumulator

Evaporator

Cross flow fan

T1

Packed valve

∅

6.35)

(

Capillary tube

∅

2.0x1200

s

0.49m (Connecting pipe)

∅

6.35

O.D.:6.35mm

Condenser

Cooling Heating

Propeller fan Outdoor unit

Mark(

Refrigerant R410A 1.

)means check points of Gas Leak.

15 kg

Ambient temp.

50Hz

Standard

pressure

(MPaG)

P

Surface temp. of heat

exchanger interchanging

pipe

T1

(°C)

Fan speed

(indoor)

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

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.

- 16 -

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

FILE NO. SVM-06020

0.39m (Connecting pipe)

12.7

∅

O.D.:12.7mm

Cooling

Compressor

Indoor unit

Cooling

P

Packed valve

(∅

12.7)

Gas container connection (Reinstall etc.)

Accumulator

PA290X3CS-4MU1

Heat exchanger

Cross flow fan

T1

Packed valve

∅

6.35)

(

Capillary tube

2.0x900

∅

s

0.49m (Connecting pipe)

∅

6.35

O.D.:6.35mm

Condenser

Refrigerant R410A 1.70kg

)means check points of Gas Leak.

Cooling

Propeller fan Outdoor unit

Mark(

Ambient temp.

50Hz

Standard

pressure

(MPaG)

P

Surface temp. of heat

exchanger interchanging

pipe

T1

(° C)

Fan speed

(indoor)

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

Note :

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

- 17 -

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

FILE NO. SVM-06020

0.39m (Connecting pipe)

∅

12.7

O.D.:12.7mm

Cooling

Compressor

Indoor unit

Cooling

P

Packed valve

(

∅

12.7)

PA225X2CS-4KU1

Evaporator

Cross flow fan

T1

Packed valve

∅

6.35)

(

Capillary tube

1.7x400

∅

s

0.49m (Connecting pipe)

∅

6.35

O.D.:6.35mm

Condenser

Cooling

Propeller fan Outdoor unit

Mark(

Refrigerant R410A 1.

)means check points of Gas Leak.

26 kg

Ambient temp.

50Hz

Standard

pressure

(MPaG)

P

Surface temp. of heat

exchanger interchanging

pipe

T1

(°C)

Fan speed

(indoor)

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

Note :

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

- 18 -

6. CONTROL BLOCK DIAGRAM

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

Indoor Unit Control Panel

Heat Exchanger Sensor

Functions

• Louver Control

FILE NO. SVM-06020

M.C.U.

Operation

Display

Temperature Sensor

Infrared Rays Signal Receiver

Infrared

Rays

Remote

Control

From Outdoor Unit

220 ~ 240 V AC 50 Hz

Initiallizing Circuit

Clock Frequency

Oscillator Circuit

Power Supply

Circuit

Noise Filter

• 3-minute Delay at Restart for Compressor

• Motor Revolution Control

• Processing

(Temperature Processing)

• Timer

• Serial Signal Communication

Louver ON/OFF Signal

Louver Driver

Serial Signal Transmitter/Receiver

Serial Signal Communication

Timer

Display

Filter Sign

Display

PRE DEF.

Sign Display

Hi Power

Sign Display

Indoor

Fan Motor

Louver Motor

REMOTE CONTROL

Infrared Rays

Remote Control

Operation ( )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

ECO

Hi power

TIMER 1.3.5.9H

COMFORT SLEEP

QUIET

- 19 -

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

Indoor Unit Control Panel

Heat Exchanger Sensor

Functions  Louver Control

FILE NO. SVM-06020

M.C.U.

Operation

Display

Temperature Sensor

Infrared Rays Signal Receiver

Infrared

Rays

Remote

Control

From Outdoor Unit

220 ~ 240V AC 50Hz

Initiallizing Circuit

Clock Frequency Oscillator Circuit

Power Supply

Circuit

Noise Filter

 3-minute Delay at Restart for Compressor

 Motor Revolution Control

 Processing

(Temperature Processing)

 Timer

Outdoor unit

ON/OFF Signal

Relay Driver

Relay RY04

Outdoor Unit

Louver ON/OFF Signal

Louver Driver

Timer

Display

Filter Sign

Display

Fan Only

Sign Display

Hi Power

Sign Display

Indoor

Fan Motor

Louver Motor

REMOTE CONTROL

Infrared Rays

Remote Control

Operation ( )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

ECO

Hi power

TIMER 1.3.5.9H

COMFORT SLEEP

QUIET

- 36 -

7. OPERATION DESCRIPTION

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.

FILE NO. SVM-06020

· Compressor operation

control

· Operation control of outdoor fan motorf Turning off the compressor and outdoor fan

· 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

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 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.

Operations according to the commands from the indoor unit

+

, MED, MED

+

Table 7-1-1

FAN TAP

OPERATION MODE

RAS-24GKHP Series

RAS-18GKH Series

Model

RAS-24GKP Series

RAS-18GKP Series

Cooling Heat Fan Only Dry

rpm Air Flow volume(m /h) rpm Air Flow volume(m /h) rpm Air Flow volume(m /h) rpm

Air Flow volume(m /h)

3

900

−

1300

900

UH H

H M+ M

13001300

900

1300

900

1300

900

M+

M+ M

1250 1200

830

1150

750

1250

830

1150

750

M L+

MUH H

1150 1050 1000 900 800 700

790

750

1100

1050

667

708

1150

−

750

1050

−

667

−

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

Then LOW+ = LOW + MED and MED

2

+

= MED + HIGH

2

- 20 -

L L- UL SUL/SL-

380 600

300

700 380 600

300

SUL/SL-

600 300 500

220

−

L LL L-

625 900 543

1000

625

900 543

UL

UL SUL

461

543

700

800

380

461

800

900

461

543

700

800

380

461

L-LL+ L+ L+

667 950 584

1050

−

667 950

−

584

−

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 HIGH, the motor operates with a constant air flow.

+

, MED, MED+ or

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.

ON

4-way valve

Compressor

Outdoor fan

(Heat pump model)

Preset temp.

0.5

ON

OFF OFF OFF ON

0

Fig. 7-2-2

display lamp

OPERATION

+3 +2.5

(Preset temp.)

-

+2 +1.5 +1 +0.5

(Room temp.)

Preset temp.

0

(Preset temp.: 24°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]

M+

*1 *1

*1

(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.

(Preset temp.)

-

(Room temp.)

Preset temp.

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

0

-0.5

M+

*1 *1 *1

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]

- 21 -

FILE NO. SVM-06020

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.

ON:6min.

OFF:4min.

ON:5min.

OFF:5min.

OFF

4-way valve

Outdoor fan

Preset temp.

+3

+2

+1

ON:6min.

OFF:4min.

OFF

ON:5min.

OFF:5min.

OFF

0

Compressor

Fig. 7-2-4

ON

display lamp

OPERATION

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.

Preset temp.

OFF

ON

Compressor

ON

OFF

ON

4-way valve

Outdoor fan

OPERATION

Fig. 7-2-6

display lamp

(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.

Room temp.

Preset temp.+1

Preset temp.

Compressor

Outdoor fan

Indoor fan

ON ON ON ON

OFF OFF OFF

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

*Super Low

Fig. 7-2-5

(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.

0

-0.5

-1

-1.5

-2

-5.0

-5.5

[FAN AUTO]

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 flo w [FAN:AUTO]

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

- 22 -