Toshiba RAS-18UKHP-ES4, RAS-18UKP-ES4, RAS-24UKHP-ES4, RAS-24UKP-ES4 SERVICE MANUAL

SERVICE MANUAL

AIR CONDITIONER

RAS-24UKHP-ES4 / RAS-24UAH-ES4

RAS-18UKHP-ES4 / RAS-18UAH-ES4

RAS-24UKP-ES4 / RAS-24UA-ES4

RAS-18UKP-ES4 / RAS-18UA-ES4

FILE NO. SVM-05011

SPLIT WALL TYPE

18 Class

(Heat pump model)

24 Class18 Class

(Cooling only model)

May 2005

CONTENTS

1. SPECIFICATIONS

2. CONSTRUCTION VIEWS

2-1 Indoor Unit 2-2 Outdoor Unit (RAS-24UAH-ES4, RAS-24UA-ES4) 2-3 Outdoor Unit (RAS-18UAH-ES4) 2-4 Outdoor Unit (RAS-18UA-ES4)

3. WIRING DIAGRAM

3-1 RAS-24UKHP-ES4 / RAS-24UAH-ES4 3-2 RAS-18UKHP-ES4 / RAS-18UAH-ES4 3-3 RAS-24UKP-ES4 / RAS-24UA-ES4 3-4 RAS-18UKP-ES4 / RAS-18UA-ES4

4. SPECIFICATION OF ELECTRICAL PARTS

4-1 Indoor Unit (RAS-24UKHP-ES4, RAS-18UKHP-ES4) 4-2 Outdoor Unit (RAS-24UAH-ES4) 4-3 Outdoor Unit (RAS-18UAH-ES4) 4-4 Indoor Unit (RAS-24UKP-ES4, RAS-18UKP-ES4) 4-5 Outdoor Unit (RAS-24UA-ES4) 4-6 Outdoor Unit (RAS-18UA-ES4)

FILE NO. SVM-05011

5. REFRIGERATION CYCLE DIAGRAM

5-1 RAS-24UKHP-ES4 / RAS-24UAH-ES4 5-2 RAS-18UKHP-ES4 / RAS-18UAH-ES4 5-3 RAS-24UKP-ES4 / RAS-24UA-ES4 5-4 RAS-18UKP-ES4 / RAS-18UA-ES4

6. CONTROL BLOCK DIAGRAM

6-1 RAS-24UKHP-ES4, RAS-18UKHP-ES4 6-2 RAS-24UKP-ES4, RAS-18UKP-ES4

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 Auto Restart Function 7-8 Filter Check Lamp

7-9 Self-Cleaning function

7-10 QUIET Mode 7-11 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 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

FILE NO. SVM-05011

10. PARTS REPLACEMENT

10-1 Indoor Unit 10-2 Outdoor Unit (RAS-24UAH-ES4, RAS-24UA-ES4) 10-3 Outdoor Unit (RAS-18UAH-ES4) 10-4 Outdoor Unit (RAS-18UA-ES4)

11. EXPLODED VIEWS AND PARTS LIST

11-1 Indoor Unit (E - Parts Assy) 11-2 Indoor Unit 11-3 Outdoor Unit (RAS-24UAH-ES4) 11-4 Outdoor Unit (RAS-18UAH-ES4) 11-5 Outdoor Unit (RAS-24UA-ES4) 11-6 Outdoor Unit (RAS-18UA-ES4)

• 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-05011

MODEL

ITEM

Capacity

Phase 1∅

Power source V 220 - 240

Power consumption W 2650 2760 2750 2870 2560 2690 1850 1900 1678 1748 1860 1960 Power factor % 96 91 95 90 94 89 98 97 94 92 97 96

Running current A 0.3/ 0.3/

Indoor/Outdoor 12.2 12.3 8.4 8.0 7.9 7.7

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-24UKHP-ES4 RAS-24UKP-ES4 RAS-18UKHP-ES4 RAS-18UKP-ES4

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-24UAH-ES4 RAS-24UA-ES4 RAS-18UAH-ES4 RAS-18UA-ES4

Dimensions Width mm 880 830 780

Net weight kg 59 63 44 39 Condenser type Finned tube Outdoor fan type Propeller fan Airflow volume m3/h 3380 3560 3380 3560 3380 3560 1830 2010 1830 2010 2120 2200 Fan motor output W 65 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 15 ~ 43 15 ~ 43 -10 ~ 24 15 ~ 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 208

High fan m3/h 900 900 900 750 800 750

Low fan m3/h 625 667 625 543 584 543

Height mm 690 538

Depth mm 310

Model Output W 2200 1500

45/43/41/39/37

RAS-24UKHP-ES4 RAS-24UKP-ES4 RAS-18UKHP-ES4 RAS-18UKP-ES4

RAS-24UAH-ES4 RAS-24UA-ES4 RAS-18UAH-ES4 RAS-18UA-ES4

Cooling Heating Cooling Cooling Heating Cooling

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

kW 6.80 6.85 7.30 7.50 6.80 6.85 5.00 5.05 5.45 5.55 5.30 5.35

Hz

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

0.3/

12.85

56

kg

m

m 8

1.50

5JS315DAG01

0.3/12.1 0.3/12.35

13.00

2

10

65

1.6 1.02 1.16

50

0.2/ 0.2/ 0.2/ 0.2/

35

1

15*

300

0.2/8.5 0.2/8.3

42/41/39/37/35

2

20*

5KS225DAA

32

550

270

- 3 -

Note : 1

· Capacity is based on the following temperature conditions.

FILE NO. SVM-05011

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-24UKHP-ES4 / RAS-24UAH-ES4

RAS-24UKP-ES4 / RAS-24UA-ES4 RAS-18UKP-ES4 / RAS-18UA-ES4

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

B8615-1

Cooling Heating

RAS-18UKHP-ES4 / RAS-18UAH-ES4

15m or less

- 4 -

2-1. Indoor Unit

Back body

Front panel

Grille inlet

298

2. CONSTRUCTION VIEWS

998

FILE NO. SVM-05011

208

75 7

51

Knock out system

Outline of indoor unit

Connection pipe (0.39m) (Flare

55 or more

Minimum distance

to ceiling

298

∅

12.7)

763.5

20

48

998

450

Drain hose (0.54m)

Connection pipe (0.49m) Wireless remote control (Flare

20

10

∅

75

6.35)

56

(For stud bolt

29

50

Knock out system

57

∅

6)

41

48

55 5555

75

8

50

160

18

∅

65

∅

100

Installation Plate outline

100

65

40

– 5 –

2-2. Outdoor Unit (RAS-24UAH-ES4, RAS-24UA-ES4)

10

∅

8

12X18

∅

600

600 or

more

-∅

for

4

600 or

more

anchor bolt

Electric

Parts cover

Liquid side

6.35)

∅

(Flare

Gas side

2.7)

∅1

(Flare

FILE NO. SVM-05011

Service Port

1212

more

52

Air inlet

340

68

Installation dimension

100 or

25 Drain outlet

∅

120

Air outlet

100 or

more

140

600

310

23

Handle

340 (pitch)

88

74

880

364

A

600

Detail Drawing

A

50

63.8 340

27

12x18 hole

∅

340

690

Handle

– 6 –

2-3. Outdoor Unit (RAS-18UAH-ES4)

10

-∅

8

11x14

∅

anchor bolt

for

4x

600 or more

600

600 or

Air inlet

more

Liquid side

Electric

Parts cover

6.35)

∅

(Flare

12.7)

∅

Gas side

(Flare

FILE NO. SVM-05011

Installation dimension

120

Air inlet

325

100 or more

Air

outlet

100 or more

6 holes

-∅

8

10 anchor bolt)

— ∅

8

11x14 holes

∅

(for fixing outdoor unit)

or

6-

25 Drain outlet

∅

Service Port

54

344

9

1

60

50

90

600

830

A

R10

600

50

Detail Drawing

A

35

52

325

23

6 hole

∅

11x14 hole

∅

Fan guard

Handle

420

∅

90

538

300

– 7 –

2-4. Outdoor Unit (RAS-18UA-ES4)

A

FILE NO. SVM-05011

A Detail Drawing (Back Leg)

600

52

310

36

302

270

∅

6 Hole

R15

R5.5

32.5

310

302

∅

30 Drain outlet

∅

436

530

265

FAN GUARD

115 125

2-∅11x14 Hole (For ∅8-∅10 anchor bolt)

600 90 780 62

102

∅

11x14 Hole

B

B Detail Drawing (Front Leg)

310

302

6 Hole

36

52

310 330

R15

COVER PV

Z

Electrical part cover

Installation dimension

100 or more

325

100 or more

Z View

Air outlet

600

Air inlet

600 or more

120

75

600 or more

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

Liquid side (Flare ∅6.35)

Gas side (Flare ∅12.7)

5

4

Service port

− 8 −

3-1.

RAS-24UKHP-ES4 / RAS-24UAH-ES4

COLOR IDENTIFICATION

BRW : BROWN RED : RED WHI : WHITE YEL : YELLOW BLU : BLUE BLK : BLACK GRY : GRAY ORN : ORANGE GRN : GREEN GRN&YEL : GREEN & YELLOW

P04BLK

CN30 CN31

3. WIRING DIAGRAM

Louver motor

BLU

YEL

ORN

PNK

6

5 223311

4

6

5

4

Varistor

DSA

F01

250V6.3A

MAIN P.C. BOARD (WP-003)

FILE NO. SVM-05011

Infrared rays receive

and Indication parts

BLU

RED

BRW

CN07

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

SR

COMPRESSOR TERMINAL

POWER SUPPLY 220-240 V~ 50 Hz

L

BLK

RED

BLK

RED

WHI PNK

COMPRESSOR

INDOOR TERMINAL BLOCK

i

N

FERRITE CORE

RED

MAGNETIC

CONTACTOR

R

S

(1/L1)

(3/L2)

(2/T1)

(4/T2)

U

V

CAPACITOR

S

C

R

BLK

1

GRN&YEL

T

(5/L3) (6/T3)

W

A1

52C

A2

CN23

2

RED

RE

3

WHI

i

CHASSIS

CAPACITOR

D

FAN MOTOR

Serial Signal

circuit

INDOOR UNIT

OUTDOOR UNIT

TRANSFORMER

GRN&YEL

COIL FOR 4 WAY VALVE

BLK

BLK BLK

RED RED

BLK BLK WHI RED GRY

BLU

YEL

BLU

YEL

GRY

BRW

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

BLK

1 1

CN03

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 −

3-2. RAS-18UKHP-ES4 / RAS-18UAH-ES4

COLOR IDENTIFICATION

BRW : BROWN RED : RED WHI : WHITE YEL : YELLOW BLU : BLUE BLK : BLACK GRY : GRAY 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-05011

Infrared rays receive

and Indication parts

BLU

CN07

BLU

1 2 3 4 65 10

RED

YEL

ORN

BRW

4 4

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

SR

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 BLK

RED RED

BLK BLK WHI RED GRY

BLU

YEL

BLU

BLU COIL FOR 4 WAY VALVE

BLK

GRY

BRW

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)

– 10 −

3-3. RAS-24UKP-ES4 / RAS-24UA-ES4

COLOR IDENTIFICATION

BRW : BROWN RED : RED WHI : WHITE YEL : YELLOW BLU : BLUE BLK : BLACK GRY : GRAY ORN : ORANGE GRN : GREEN

GRN&YEL : GREEN & YELLOW

P04

BLK

CN30 CN31

CN27

DSA

Varistor

6.3A

F01

250V

Varistor

Louver motor

BLU

PNK

6

5 223311

6

5

FILE NO. SVM-05011

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

COMPRESSOR TERMINAL

2

1

21

1

GRY

BRW

YEL

1

2

4

3

1

2

66554

3

145 C

TEMP FUSE

BLK2BLK

Thermo. sensor

(TA)

CN03

Heat exchanger sensor

(TC)

CN01

2

1

BLK

C

SR

MAGNETIC CONTACTOR

− 11 −

RAS-18UKP-ES4 / RAS-18UA-ES4

3-4.

P04

BLK

CN30 CN31

CN27

GRN&YEL

COLOR IDENTIFICATION

BRW : BROWN RED : RED WHI : WHITE YEL : YELLOW BLU : BLUE BLK : BLACK GRY : GRAY ORN : ORANGE GRN : GREEN GRN&YEL : GREEN & YELLOW

Varistor

DSA

6.3A

MAIN P.C. BOARD (WP-003)

F01

250V

Varistor

Louver motor

BLU

YEL

PNK

6

5 223311

4

6

5

4

FILE NO. SVM-05011

Infrared rays receive

and Indication parts

1 2 3 4 6 10

BLU

RED

BRW

ORN

CN07

BLU

1 2 3 4 65 10

321

Power supply

circuit

Control Fan motor circuit

GRY

BRW

YEL

5 98

BLU

5 64

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

3

145 C

TEMP FUSE

3

BLK

CHASSIS

(or A)

A1

(or B)

A2

INDOOR UNIT

OUTDOOR UNIT

GRN&YEL

GRY

Thermo. sensor

66554

(TA)

Heat exchanger sensor

(TC)

CAPACITOR

RED

S

WHI PNK

R

COMPRESSOR

COMPRESSOR TERMINAL

CAPACITOR

RED

C

BLK

WHI

RED

BLK

FAN MOTOR

C

R

S

− 12 −

FILE NO. SVM-05011

4. SPECIFICATION OF ELECTRICAL PARTS

4-1. Indoor Unit (RAS-24UKHP-ES4, RAS-18UKHP-ES4)

No. Parts name Type Specifications

1 Fan motor (for indoor) AFS-220-31A 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) 15G561K 560 V

11 Resistor (R319) RF-2TK5R6 5.6Ω , 2 W 12 Louver motor MP35EA12 Output (Rated) 2 W, 10 poles, 1 phase,

——— 10 kΩ at 25°C

DC 12 V

4-2. Outdoor Unit (RAS-24UAH-ES4)

No. Parts name Type Specifications

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

1 Compressor 5JS315DAG01 Winding resistance (Ω) Red-Black White-Black

(at 20°C) 0.830 2.257 Output (Rated) 65W, 6poles, 1 phase, 220 – 240V, 50Hz

2 Fan motor (for outdoor) KFG6-71SB5P-T1 Winding resistance (Ω) Red-Black White-Black

(at 20°C) 64.4 127.4

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 A35 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

451355L AC 450V, 3.5µF

BUM44X4505B AC 440V, 45µF

VHV (STF) AC 220 ~ 240V

– 13 –

FILE NO. SVM-05011

4-3. Outdoor Unit (RAS-18UAH-ES4)

No. Parts name Type Specifications

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

1 Compressor 5KS225DAA Winding resistance (Ω) Red-Black White-Black

(at 20°C) 1.632 2.457 Output (Rated) 65W, 6poles, 1 phase, 220 – 240V, 50Hz

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

(at 20°C) 188 289

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

451155L AC 450V, 1.5 µF

BUM44X4505B AC 440V, 45µF

VHV (STF) AC 220 − 240V

4-4. Indoor Unit (RAS-24UKP-ES4, RAS-18UKP-ES4)

No. Parts name Type Specifications

1 Fan motor (for indoor) AFS-220-31A 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) 15G561K 560 V

11 Resistor (R319) RF-2TK5R6 5.6Ω, 2 W 12 Louver motor MP35EA12 Output (Rated) 2 W, 10 poles, 1 phase,

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

——— 10 kΩ at 25°C

DC 12 V

– 14 –

FILE NO. SVM-05011

4-5. Outdoor Unit (RAS-24UA-ES4)

No. Parts name Type Specifications

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

1 Compressor 5JS315DAG01 Winding resistance (Ω  ) Red-Black White-Black

(at 20°C) 0.830 2.257 Output (Rated) 65W, 6poles, 1 phase, 220 − 240V, 50Hz

2 Fan motor (for outdoor) KFG6-71SB5P-T Winding resistance (Ω) Red-Black White-Black

(at 20° C) 64.4 127.4

Running capacitor

3

(for fan motor) Running capacitor

4

(for compressor)

5

Magnetic contactor

451355L AC 450V, 3.5µ F

BUM44X4505B

A35

AC 440V, 45µ F

220 − 240V, 50Hz

4-6. Outdoor Unit (RAS-18UA-ES4)

No. Parts name Type Specifications

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

1 Compressor 5KS225DAA Winding resistance (Ω) Red-Black White-Black

(at 20°C ) 1. 632 2.457

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

451155L AC 450V, 1.5µF

BUM44X4505B AC 440V, 45µF

CLK-26J

220 − 240V, 50Hz

– 15 –

5. REFRIGERATION CYCLE DIAGRAM

5-1. RAS-24UKHP-ES4 / RAS-24UAH-ES4

FILE NO. SVM-05011

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

5JS315DAG01

Heat exchanger

Cross flow fan

T1

Packed valve

(∅

6.35)

Capillary tube

2.0x800

∅

s

0.

49m

(Connecting pipe)

6.35

∅

O.D.:6.35mm

Condenser

Refrigerant R410A 1.5 kg

)means check points of Gas Leak.

Cooling Heating

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 3.1 50.9 High 20/– 7/6

Heating Overload*1 3.8 ~ 4.0 57.0 ~ 59.0 Low 27/– 24/18

Low temperature 2.6 35.0 High 20/– –10/–10 Standard 0.8 7.2 High 27/19 35/24

Cooling Overload 1.3 12.0 High 32/23 43/26

Low temperature 0.6 1.0 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.

– 16 –

5-2. RAS-18UKHP-ES4 / RAS-18UAH-ES4

FILE NO. SVM-05011

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)

5KS225DAA

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.

02 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.

– 17 –

5-3. RAS-24UKP-ES4 / RAS-24UA-ES4

FILE NO. SVM-05011

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

5JS315DAG01

Heat exchanger

Cross flow fan

T1

Packed valve

∅

6.35)

(

Capillary tube

2.0x700

∅

s

0.49m (Connecting pipe)

∅

6.35

O.D.:6.35mm

Condenser

Refrigerant R410A 1.6kg

)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 0.6 6.0 High 27/19 35/24

Cooling Overload 1.10 10.0 High 32/23 43/26

Low temperature 0.5 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 –

5-4. RAS-18UKP-ES4 / RAS-18UA-ES4

FILE NO. SVM-05011

0.39m (Connecting pipe)

∅

12.7

O.D.:12.7mm

Cooling

Compressor

Indoor unit

Cooling

P

Packed valve

(

∅

12.7)

5KS225DAA

Evaporator

Cross flow fan

T1

Packed valve

∅

6.35)

(

Capillary tube

1.7x600

∅

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.

16 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)

– 19 –

6. CONTROL BLOCK DIAGRAM

6-1. RAS-24UKHP-ES4, RAS-18UKHP-ES4

Indoor Unit Control Panel

Heat Exchanger Sensor

Functions

• Louver Control

FILE NO. SVM-05011

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

– 20 –

6-2. RAS-24UKP-ES4, RAS-18UKP-ES4

Indoor Unit Control Panel

Heat Exchanger Sensor

Functions  Louver Control

FILE NO. SVM-05011

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, 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

− 21 −

7. OPERATION DESCRIPTION

FILE NO. SVM-05011

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

Table 7-1-1

OPERATION MODE

RAS-24UKHP Series

RAS-18UKH Series

Model

RAS-24UKP Series

RAS-18UKP 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

1300

790

−

(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

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.

FAN TAP

UH H

900

M+

H M+ M

M+ M

1250 1200

830

11501200

750

1300

900

1150

750

1100

1250

830

1100

708

M L+

MUH H

1150 1050 1000 900 800 700

790

−

750

1050

667

1150

750

1050

−

667

950

584

−

.

1050

667

950

584

Operations according to the commands from the indoor unit

L L- UL SUL/SL-

L L-

625

900

543

1000

625

900

543

UL

543

800

461

900

543

800

461

700

380

800

461

700

380

L-LL+

L+

+

, MED, MED

UL SUL

380

600

300

700

380

600

300

+

SUL/SL-

600

300

500

220

−

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

Then LOW+ = LOW + MED and MED

2

+

= MED + HIGH

2

– 22 –

FILE NO. SVM-05011

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

(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

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]

- 23 -