Toshiba RAS-24UAH-ES-1, RAS-24UKP-ES-1, RAS-18UA-ES2, RAS-18UKHP-ES2, RAS-18UAH-ES2 SERVICE MANUAL

SERVICE MANUAL

AIR CONDITIONER

RAS-24UKHP-ES-1 / RAS-24UAH-ES-1

RAS-18UKHP-ES2 / RAS-18UAH-ES2

FILE NO. SVM-03009

SPLIT WALL TYPE

RAS-24UKP-ES-1 / RAS-24UA-ES-1

RAS-18UKP-ES2 / RAS-18UA-ES2

18 Class

(Heat pump model)

24 Class18 Class

(Cooling only model)

Feb ., 2003

CONTENTS

1. SPECIFICATIONS

2. CONSTRUCTION VIEWS

2-1 Indoor Unit 2-2 Outdoor Unit (RAS-24UAH-ES-1, RAS24UA-ES-1) 2-3 Outdoor Unit (RAS-18UAH-ES2) 2-4 Outdoor Unit (RAS-18UA-ES2)

3. WIRING DIAGRAM

3-1 RAS-24UKHP-ES-1 / RAS-24UAH-ES-1 3-2 RAS-18UKHP-ES2 / RAS-18UAH-ES2 3-3 RAS-24UKP-ES-1 / RAS-24UA-ES-1 3-4 RAS-18UKP-ES2 / RAS-18UA-ES2

4. SPECIFICATION OF ELECTRICAL PARTS

4-1 Indoor Unit (RAS-24UKHP-ES-1, RAS-18UKHP-ES2) 4-2 Outdoor Unit (RAS-24UAH-ES-1) 4-3 Outdoor Unit (RAS-18UAH-ES2) 4-4 Indoor Unit (RAS-24UKP-ES-1, RAS-18UKP-ES2) 4-5 Outdoor Unit (RAS-24UA-ES-1) 4-6 Outdoor Unit (RAS-18UA-ES2)

FILE NO. SVM-03009

5. REFRIGERATION CYCLE DIAGRAM

5-1 RAS-24UKHP-ES-1 / RAS-24UAH-ES-1 5-2 RAS-18UKHP-ES2 / RAS-18UAH-ES2 5-3 RAS-24UKP-ES-1 / RAS-24UA-ES-1 5-4 RAS-18UKP-ES2 / RAS-18UA-ES2

6. CONTROL BLOCK DIAGRAM

6-1 RAS-24UKHP-ES-1, RAS-18UKHP-ES2 6-2 RAS-24UKP-ES-1, RAS-18UKP-ES2

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 Defrosting Operation 7-7 Auto Restart Function 7-8 Filter Check Lamp

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 Others

– 1 –

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-24UAH-ES-1, RAS-24UA-ES-1) 10-3 Outdoor Unit (RAS-18UAH-ES2) 10-4 Outdoor Unit (RAS-18UA-ES2)

11. EXPLODED VIEWS AND PARTS LIST

11-1 Indoor Unit (E - Parts Assy) 11-2 Indoor Unit 11-3 Outdoor Unit (RAS-24UAH-ES-1) 11-4 Outdoor Unit (RAS-18UAH-ES2) 11-5 Outdoor Unit (RAS-24UA-ES-1) 11-6 Outdoor Unit (RAS-18UA-ES2)

FILE NO. SVM-03009

• 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-03009

MODEL

ITEM Cooling Heating Cooling Cooling Heating Cooling

Capacity

Phase 1∅

Power source V 220 – 240

Power consumption kW 2430 2510 2355 2435 2360 2440 1850 1900 1648 1718 1820 1870 Power factor % 96 92 95 90 96 92 98 97 94 92 98 97

Running current A 0.3/ 0.3/

Indoor/Outdoor 11.2 11.1 8.4 8.0 7.9 7.7 Starting current A 54 47 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-ES-1 RAS-24UKP-ES-1 RAS-18UKHP-ES2 RAS-18UKP-ES2

Dimensions Width mm 998

Net weight kg 12 Evaporator type Finned tube Indoor fan type Cross flow fan

Air volume Medium fan m3/h 750 800 750 650 700 650

Fan motor output W 20 Air filter Honeycomb woven filter with PP frame

OUTDOOR UNIT RAS-24UAH-ES-1 RAS-24UA-ES-1 RAS-18UAH-ES2 RAS-18UA-ES2

Dimensions Width mm 880 830 780

Net weight kg 65 62 50 48 Condenser type Finned tube Outdoor fan type Propeller fan Airflow volume m3/h 3400 3600 3400 3600 3400 3600 1800 2000 1800 2000 1800 2000 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

Indoor (H/M/L) dB 45/41/37 42/39/35 Outdoor (220-240V) dB 56-57 57-58 56-57 51-52 52-53 51-52 Name of refrigerant R410A Rated amount kg 1.6 1.3 1.2

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 950 950 950 750 800 750

Low fan m3/h 600 650 600 530 570 530

Height mm 690 538

Depth mm 310 300

Model PA290X3F-4MS PA225X3F-4L Output W 2200 1500

RAS-24UKHP-ES-1 RAS-24UKP-ES-1 RAS-18UKHP-ES2 RAS-18UKP-ES2

RAS-24UAH-ES-1 RAS-24UA-ES-1 RAS-18UAH-ES2 RAS-18UA-ES2

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

kW 6.30 6.30 6.80 6.90 6.40 6.45 5.00 5.05 5.45 5.55 5.05 5.10

Hz 50

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

0.3/11.2 0.3/10.9 0.3/10.8

m

m10 8

2

0.2/ 0.2/ 0.2/ 0.2/

1

15*

0.2/8.2 0.2/7.8

2

20*

– 3 –

Note : 1

• Capacity is based on the following temperature conditions.

FILE NO. SVM-03009

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-ES-1 / RAS-24UAH-ES-1 RAS-18UKHP-ES2 / RAS-18UAH-ES2

RAS-24UKP-ES-1 / RAS-24UA-ES-1 RAS-18UKP-ES2 / RAS-18UA-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 15m or less

JIS C9612-1994

Cooling Heating

– 4 –

2-1. Indoor Unit

Back body

Front panel

Grille inlet

298

2. CONSTRUCTION VIEWS

998

FILE NO. SVM-03009

208

75 7

51

Knock out system

Outline of indoor unit

Connection pipe (0.39m) (Flare ∅12.7)

55 or more

Minimum distance

to ceiling

298

20

48

998

763.5 450

Drain hose (0.54m)

Connection pipe (0.49m) (Flare ∅6.35)

20

10

75

50

56

(For stud bolt ∅6)

29

75

50

Knock out system

57

Wireless remote control

41

48

55 5555

18

8

160

∅65

100

Installation Plate outline

– 5 –

100

∅

65

40

2-2.Outdoor Unit (RAS-24UAH-ES-1, RAS-24UA-ES-1)

anchor bolt

4-∅12X18

for ∅8 ∅10

FILE NO. SVM-03009

600 or

more

600

more

52

Air inlet

340

68

Installation dimension

100 or

∅25 Drain outlet

120

600 or

more

Air outlet

100 or

more

140

600

310

23

Electric

Parts cover

Liquid side

Handle

(Flare ∅6.35)

Gas side

(Flare ∅12.7)

Service Port

12

364

340 (pitch)

12

88

74

880

A

600

A Detail Drawing

50

63.8 340

27

690

Handle

∅12x18 hole

340

– 6 –

2-3.Outdoor Unit (RAS-18UAH-ES2)

anchor bolt

4x∅11x14

for ∅8-∅10

600 or more

600

600 or

Air inlet

more

Liquid side

Electric

Parts cover

(Flare ∅6.35)

Gas side

(Flare ∅12.7)

FILE NO. SVM-03009

Installation dimension

120

Air inlet

325

100 or more

Air

outlet

100 or more

8-∅6 holes

(for fixing outdoor unit)

or ∅8 — ∅10 anchor bolt)

6-∅11x14 holes

∅25 Drain outlet

Service Port

344

91 54

60

50

90

600

830

A

R10

600

50

35

A Detail Drawing

52

325

23

∅6 hole

∅11x14 hole

Fan guard

Handle

∅420

90

538

300

– 7 –

2-4.Outdoor Unit (RAS-18UA-ES2)

4x∅11x14

or ∅8-∅10

anchor bolt

600 or more

600

more

Air inlet

600 or

FILE NO. SVM-03009

Installation dimension

120

Air inlet

325

100 or more

Air

outlet

Electric parts cover

8-∅6 hole

(for fixing outdoor unit)

4-∅11x14 hole

(for ∅8-∅10 anchor bolt)

Gas side

Liquid side

(Flare ∅6.35)

27

(Flare ∅12.7)

Service

Port

130

100

9090

600

344

65.5

780

A

600

Detail Drawing

A

50

R10

35

52.5 325

23

∅6 hole

301

325

∅11x14 hole

∅25Drain outlet

∅420

Fan guard

538

300

Handle

– 8 –

3. WIRING DIAGRAM

3-1.RAS-24UKHP-ES-1 / RAS-24UAH-ES-1

COLOR IDENTIFICATION

:

BROWN

BRW

:

RED

:

WHI

WHITE

:

YEL

YELLOW

:

BLU

BLUE

:

BLK

BLACK

:

GRY

GRAY

:

PINK

PNK

:

ORANGE

ORN

GRN&YEL

:

GREEN &

GRN

:

GREEN

SG01 DSA

R22

VARISTOR

T6. 3A 250V

F01 FUSE

BLK WHI RED

GRN&YEL

CN31 CN30

CN23

BLK P04

YELLOW

R09

R21

LOUVER MOTOR

BLU

6 6

IC04

L01

R01

DB01

C15

C01

MAIN P.C. BOARD

(MCC-821)

CN13

3

4

1

2

5

6

7 8 9 10

3

4

1

2

5

6

7 8 9 10

BLU

5 5

6

7 8 9 10

6

7 8 9 10

BLU

3

4

1

2

3

4

1

2

INFRARED RAYS RECEIVE AND INDICATION PARTS

ORN

PNK

YEL

RED

4

3

5

2

4

3

5

2

CN 07

CN03 CN01

WHI

CN25

FILE NO. SVM-03009

FAN MOTOR

DC MOTOR

BRW

4

3

6

5

1 1

BLK

1 1

C02

2 2

BLK

6

IC

IC01

THERMO SENSOR

(TA)

5

CN 10

C06

4

T01

3

1 1

BLK

1 1

IC02

2 2

BLK

EXCHANGER

SENSOR

DC15V DC0V

DC12V DC7V

DC0V

HEAT

(TC)

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

N

FERRITE CORE

RED

MAGNETIC

CONTACTOR

R

(1/L1)

(3/L2)

(2/T1)

(4/T2)

U

CAPACITOR

S

R

2

A1

A2

3

2

3

RED

WHI RED

GRN&YEL

i

CHASSIS

CAPACITOR

FAN MOTOR

INDOOR UNIT

OUTDOOR UNIT

BLK BLK

TRANSFORMER

COIL FOR 4 WAY VALVE

BLK BLK

RED RED

BLK BLK WHI RED GRY

BLU

YEL

BLU

1 3

1 3 5 7 9

1 313

11 33

1 2 3

1 3

1 3 5 7 9

CN06

CN05

CN01

CN11

CN02

MAIN P.C. BOARD (MCC-890)

TNR

SG01

R74

F01

250VAC T6. 3A

CR11

CR12

CR13

CN03

1 1

RY07

RY05

3

TNR R73

RY06

CN07

CN08

DISCHARGE PIPE SENSOR (TD)

BLU

1

1 2 3

3

BLU

BLK

1

1 2 3

3

BLK

HEAT EXCHANGER SENSOR (TE)

1

i

GRN&YEL

S

T

(5/L3)

52C

(6/T3)

V

W

C

BLK

– 9 –

3-2.RAS-18UKHP-ES2 / RAS-18UAH-ES2

COLOR IDENTIFICATION

:

BRW

BROWN

RED

:

RED

WHI

:

WHITE

YEL

:

YELLOW

BLU

:

BLUE

BLK

:

BLACK

GRY

:

GRAY

:

PNK

PINK

ORN

:

GRN

R22

VARISTOR

T6.3A 250V

F01 FUSE

ORANGE

:

GREEN &

:

GREEN

BLK WHI RED

GRN&YEL

BLK P04

CN30 CN31

CN23

GRN&YEL

SG01 DSA

YELLOW

R09

R21

LOUVER MOTOR

BLU

6 6

IC04

L01

R01

DB01

C15

C01

MAIN P.C. BOARD

(MCC-821)

CN13

3

4

1

2

5

6

7 8 9

3

4

1

2

5

6

7 8 9

BLU

3

4

1

2

3

4

1

2

INFRARED RAYS RECEIVE AND INDICATION PARTS

BLU

5

6

7 8 9

5

6

7 8 9

ORN

PNK

YEL

RED

4

3

5

2

4

3

5

2

CN 07

CN03 CN01

10 10

WHI

10

CN25

10

FILE NO. SVM-03009

FAN MOTOR

DC MOTOR

BRW

4

3

6

5

1 1

BLK

1 1

+

C02

2 2

BLK

6

IC

IC01

THERMO SENSOR

(TA)

5

CN 10

C06

4

T01

3

1 1

BLK

2 2

BLK

1 1

DC15V DC0V

DC12V DC7V

DC0V

IC02

HEAT

EXCHANGER

SENSOR

(TC)

OUTDOOR TERMINAL BLOCK

C

SR

COMPRESSOR TERMINAL

POWER SUPPLY 220-240 V~ 50 Hz

L

BLK

RED

BLK

CAPACITOR

RED

S

WHI PNK

R

COMPRESSOR

INDOOR TERMINAL BLOCK

i

N

FERRITE CORE

RED

RELAY

C

BLK

11

12

1

GRN&YEL

13

14

2

RED

WHI RED

15

16

3

i

CHASSIS

A

B

CAPACITOR

FAN MOTOR

INDOOR UNIT

OUTDOOR UNIT

GRN&YEL

BLK BLK

TRANSFORMER

COIL FOR 4WAY VALVE

BLK BLK

RED RED

BLK BLK WHI RED GRY

BLU

YEL

BLU

1

1 2

CN06

3

1

CN05

3

1

3

5

CN01

7

9

1

CN11

313

1

CN02

313

MAIN P.C. BOARD (MCC-890)

TNR

SG01

R74

F01

250VAC T6. 3A

CR11

CR12

CR13

CN03

1 1

RY07

RY05

3

TNR R73

RY06

CN07

CN08

DISCHARGE PIPE SENSOR (TD)

BLU

1

1 2 3

3

BLU

BLK

1

1 2 3

3

BLK

HEAT EXCHANGER SENSOR (TE)

– 10 –

3-3.RAS-24UKP-ES-1 / RAS-24UA-ES-1

COLOR IDENTIFICATION

BRW

RED

WHI YEL BLU

BLK GRY PNK

ORN

GRN&YEL

R22

VARISTOR

SG01 DSA

T6.3A 250V

F01 FUSE

3

BLK WHI RED

GRN&YEL

CN27

BLK P04

CN30 CN31

11

:

BROWN RED

:

WHITE

:

YELLOW

:

BLUE

:

BLACK

:

GRAY

:

PINK

:

ORANGE

:

GREEN &

: :

GREENGRN

RY04

YELLOW

R09

R21

LOUVER MOTOR

BLU

6 6

IC04

L01

R01

DB01

C15

C01

MAIN P.C. BOARD

(MCC-821)

CN13

3

4

1

2

5

6

7 8 9

3

4

1

2

5

6

7 8 9

BLU

3

4

1

2

3

4

1

2

INFRARED RAYS RECEIVE AND INDICATION PARTS

BLU

5

6

7 8 9

5

6

7 8 9

FILE NO. SVM-03009

FAN MOTOR

DC MOTOR

ORN

PNK

YEL

RED

BRW

1 1

C02

2 2

BLK

6

5

6

5

CN 10

C06

IC

IC01

THERMO SENSOR

(TA)

4 4

T01

3 3

1 1

BLK

1 1

IC02

2 2

BLK

EXCHANGER

SENSOR

4

3

5

2

4

3

5

2

CN 07

CN03 CN01

10 10

WHI

10

CN25

10

1 1

BLK

DC15V DC0V

DC12V DC7V

DC0V

HEAT

(TC)

OUTDOOR TERMINAL BLOCK

INDOOR TERMINAL BLOCK

POWER SUPPLY 220-240 V~ 50 Hz

L

N

BLK

RED

BLK

RED

BLK BLK

SPARK KILLER

RED

MAGNETIC CONTACTOR

i

A1 A2

52C

1/L1 2/T1

3/L2 4/T2

5/L3 6/T3

1

2

GRN&YEL

RED

CAPACITOR

3

CHASSIS

ORN

THERMOSTAT

ORN

i

WHI

PNK

RED

CAPACITOR

S

R

COMPRESSOR

INDOOR UNIT

OUTDOOR UNIT

C

WHI RED

FAN MOTOR

BLK

C

SR

COMPRESSOR TERMINAL

BLK

– 11 –

3-4.RAS-18UKP-ES2 / RAS-18UA-ES2

COLOR IDENTIFICATION

BRW

ORN

GRN&YEL

R22

VARISTOR

SG01 DSA

T6.3A 250V

F01 FUSE

3

BLK WHI RED

GRN&YEL

CN30

CN31

CN27

BLK P04

11

RED

WHI YEL BLU

BLK GRY PNK

:

BROWN

:

RED

:

WHITE

:

YELLOW

:

BLUE

:

BLACK

:

GRAY

:

PINK

:

ORANGE GREEN &

:

GREENGRN

YELLOW

RY04

R09

R21

LOUVER MOTOR

BLU

6 6

IC04

L01

R01

DB01

C15

C01

MAIN P.C. BOARD

(MCC-821)

CN13

3

4

1

2

5

6

7 8 9

3

4

1

2

5

6

7 8 9

BLU

3

4

1

2

3

4

1

2

INFRARED RAYS RECEIVE AND INDICATION PARTS

BLU

5

6

7 8 9

5

6

7 8 9

PNK

YEL

RED

ORN

4

3

5

2

4

3

5

2

CN 07

CN03 CN01

1

10

1

10

WHI

BLK

10

CN25

10

FILE NO. SVM-03009

FAN MOTOR

DC MOTOR

BRW

4

3

6

5

1 1

+

C02

2 2

BLK

6

IC

IC01

THERMO SENSOR

(TA)

5

CN 10

C06

4

T01

3

1 1

BLK

2 2

BLK

1 1

DC15V DC0V

DC12V DC7V

DC0V

IC02

HEAT

EXCHANGER

SENSOR

(TC)

OUTDOOR TERMINAL BLOCK

CAPACITOR

RED

WHI

PNK

COMPRESSOR

COMPRESSOR TERMINAL

POWER SUPPLY 220-240 V~ 50 Hz

L

BLK

RED

BLK

RELAY

S

C

R

C

SR

INDOOR TERMINAL BLOCK

N

RED

BLK

11

121314

BLK

i

1

GRN&YEL

2

RED

15

16

3

BLK

CHASSIS

SPARK KILLER

A

B

CAPACITOR

RED

WHI

RED

FAN MOTOR

GRN&YEL

i

INDOOR UNIT

OUTDOOR UNIT

ORN

THERMOSTAT

ORN

BLK

– 12 –

FILE NO. SVM-03009

4. SPECIFICATION OF ELECTRICAL PARTS

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

No. Parts name Type Specifications

1 Fan motor (for indoor) ICF-340-30-F2 DC 340V, 30W 2 Thermo sensor (TA-sensor) ——— 10kΩ at 25°C 3 DC-DC transformer (T01) SWT-58A DC 390V, Secondary DC 15V, 12V, 7V 4 Microcontroller TMP87CM40AN 5 Heat exchanger sensor

(TC-sensor) 6 Line filter (L01) SS11V-R07190 19mH, AC 0.7A 7 Diode (DB01) D3SBA60 4A, 600V 8 Capacitor (C02) KMH450VNSN120M25C 120µF, 450V 9 Fuse (F01) TSCR T6.3A, 250V

10 Power supply IC (IC01) MA8920 5A, 900V 11 Varistor (R21, R22) 15G561K 560V 12 Resistor (R01) RF-5TK4R7 4.7Ω, 5W 13 Louver motor MP35EA12 Output (Rated) 2W, 10poles, 1phase,

——— 10kΩ at 25°C

DC 12V

4-2. Outdoor Unit (RAS-24UAH-ES-1)

No. Parts name Type Specifications

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

1 Compressor PA290X3F-4MS Winding resistance (Ω) Red-Black White-Black

(at 20°C) 1.07 2.20 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) MT3 T6.3A, 250V

451355KQ AC 450V, 3.5µF

371456JCR AC 370V, 45µF

VHV (STF) AC 220 – 240V

– 13 –

FILE NO. SVM-03009

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

No. Parts name Type Specifications

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

1 Compressor PA225X3F-4L Winding resistance (Ω) Red-Black White-Black

(at 20°C) 1.35 2.68 Output (Rated) 65W, 6poles, 1 phase, 220 – 240V, 50Hz

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

(at 20°C) 176.2 290.5

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 Relay VC20FA 220 – 240V, 50Hz, 1P1a 8 Transformer TT-05 220 – 240V 9 Microcomputer TMP47C840N

10 Varistor (R73, R74) 15G471K 470V 11 Fuse (F01) MT3 T6.3A, 250V

451205KQ AC 450V, 2µF

371456JCR AC 370V, 45µF

VHV (STF) AC 220 – 240V

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

No. Parts name Type Specifications

1 Fan motor (for indoor) ICF-340-30-2 DC 340V, 30W 2 Thermo sensor (TA-sensor) ——— 10kΩ at 25°C 3 DC-DC transformer (T01) SWT-58A DC 390V, Secondary DC 15V, 12V, 7V 4 Microcontroller TMP87CM40AN 5 Heat exchanger sensor

(TC-sensor) 6 Line filter (L01) SS11V-R07190 19mH, AC 0.7A 7 Diode (DB01) D3SBA60 4A, 600V 8 Capacitor (C02) KMH450VNSN120M25S 120µF, 450V 9 Fuse (F01) TSCR T6.3A, 250V

10 Relay (for outdoor fan motor,

solenoid coil) (RY04)

11 Power supply IC (IC01) MA8920 5A, 900V 12 Varistor (R21, R22) 15G561K 560V 13 Resistor (R01) RF-5TK4R7 4.7Ω, 5W 14 Louver motor MP35EA12 Output (Rated) 2W,10poles, 1phase,

——— 10kΩ at 25°C

AJQ1341 Coil DC 12V, 33mA, Rated 1A, AC 250V

DC 12V

– 14 –

FILE NO. SVM-03009

4-5. Outdoor Unit (RAS-24UA-ES-1)

No. Parts name Type Specifications

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

1 Compressor PA290X3F-4MS Winding resistance (Ω) Red-Black White-Black

(at 20°C) 1.07 2.20 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 Bimetal thermostat CS-7C Open 130 ± 5°C, Close 70 ± 10°C 6 Magnetic contactor A35 220 – 240V, 50Hz

451355KQ AC 450V, 3.5µF

371456JCR AC 370V, 45µF

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

No. Parts name Type Specifications

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

1 Compressor PA225X3F-4L Winding resistance (Ω) Red-Black White-Black

(at 20°C) 1.35 2.68 Output (Rated) 42W, 6poles, 1 phase, 220 – 240V, 50Hz

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

(at 20°C) 176.2 290.5

Running capacitor

3

(for fan motor)

Running capacitor

4

(for compressor) 5 Bimetal thermostat CS-7C Open 130 ± 5°C, Close 70 ± 10°C 6 Relay VC20FA 220 – 240V, 50Hz, 1P1a

451205KQ AC 450V, 2µF

371456JCR AC 370V, 45µF

– 15 –

5. REFRIGERATION CYCLE DIAGRAM

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

FILE NO. SVM-03009

Indoor unit

Cooling

0.49m (Connecting pipe) ∅12.7

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

Cooling

Heating

Tank

Heating

P

Packed valve

(∅12.7) Gas container connection (Reinstall etc.)

Heating

4-way valve

Cooling

Compressor

PA290X3F-4MS

Heat exchanger

Cross flow fan

T1

0.39m (Connecting pipe) ∅6.35

Packed valve

(∅6.35)

Capillary tube

∅2.0x700s

Condenser

Refrigerant R410A 1.6 kg

Cooling Heating

Propeller fan

Outdoor unit

Mark( )means check points of Gas Leak.

Ambient temp.

Surface temp. of heat

exchanger interchanging

pipe

T1

(°C)

Fan speed

(indoor)

conditions DB/WB

(°C)

Indoor Outdoor

50Hz

Standard

pressure

(MPaG)

P

Standard 2.7 43.0 High 20/– 7/6

Heating Overload*1 3.1 ~ 4.0 52.0 ~ 59.0 Low 27/– 24/18

Low temperature 2.7 36.0 High 20/– –10/–10 Standard 0.9 11.0 High 27/19 35/24

Cooling Overload 0.8 12.0 High 32/23 43/26

Low temperature 0.5 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-ES2 / RAS-18UAH-ES2

FILE NO. SVM-03009

Indoor unit

Cooling

0.39m (Connecting pipe)

∅

12.7

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

Cooling

Heating

P

Packed valve

∅

(

Heating

4-way valve

Cooling

Compressor

12.7)

PA225X3F-4L

Accumulator

Condenser

Evaporator

Cross flow fan

T1

Capillary tube

∅1.7x700s

Packed valve

(

∅

6.35)

Capillary tube

∅1.0x1500s

0.49m (Connecting pipe)

∅

6.35

Refrigerant R410A 1.3 kg

Cooling Heating

Propeller fan Outdoor unit

Mark( )means check points of Gas Leak.

Ambient temp.

Surface temp. of heat

exchanger interchanging

pipe

T1

(°C)

Fan speed

(indoor)

conditions DB/WB

(°C)

Indoor Outdoor

50Hz

Standard

pressure

(MPaG)

P

Standard 2.7 45.0 High 20/– 7/6

Heating Overload*1 3.0 ~ 3.8 49.0 ~ 58.0 Low 27/– 24/18

Low temperature 2.0 34.0 High 20/––10/–10 Standard 0.9 10.0 High 27/19 35/24

Cooling Overload 1.0 15.0 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.

– 17 –

5-3.RAS-24UKP-ES-1 / RAS-24UA-ES-1

FILE NO. SVM-03009

Indoor unit

Cooling

0.49m (Connecting pipe) ∅12.7

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

Cooling

Tank

P

Packed valve

(∅12.7) Gas container connection (Reinstall etc.)

Cooling

Compressor

PA290X3F-4MS

Heat exchanger

Cross flow fan

T1

Packed valve

∅

6.35)

(

Capillary tube

∅2.0x600s

0.39m (Connecting pipe)

∅

6.35

Condenser

Refrigerant R410A 1.6kg

Cooling

Propeller fan Outdoor unit

Mark( )means check points of Gas Leak.

Ambient temp.

Surface temp. of heat

exchanger interchanging

pipe

T1

(°C)

Fan speed

(indoor)

conditions DB/WB

(°C)

Indoor Outdoor

50Hz

Standard

pressure

(MPaG)

P

Standard 0.9 11.0 High 27/19 35/24

Cooling Overload 0.8 12.0 High 32/23 43/26

Low temperature 0.5 1.0 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-ES2 / RAS-18UA-ES2

FILE NO. SVM-03009

Indoor unit

Cooling

0.39m (Connecting pipe)

∅

12.7

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

Cooling

Packed valve

Cooling

P

∅

12.7)

(

Compressor

PA225X3F-4L

Accumulator

Evaporator

Cross flow fan

T1

Packed valve

(

∅

6.35)

Muffler

Capillary tube

∅1.7x350s

0.49m (Connecting pipe)

∅

6.35

Condenser

Refrigerant R410A 1.2 kg

Cooling

Propeller fan Outdoor unit

Mark( )means check points of Gas Leak.

Ambient temp.

Surface temp. of heat

exchanger interchanging

pipe

T1

(°C)

Fan speed

(indoor)

conditions DB/WB

(°C)

Indoor Outdoor

50Hz

Standard

pressure

(MPaG)

P

Standard 0.9 10.0 High 27/19 35/24

Cooling Overload 1.0 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-ES-1, RAS18UKHP-ES2

Indoor Unit Control Panel

Heat Exchanger Sensor

Functions

• Louver Control

FILE NO. SVM-03009

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

• 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 (START/STOP) 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

Filter Reset

– 20 –

6-2.RAS-24UKP-ES-1, RAS18UKP-ES2

Indoor Unit Control Panel

Heat Exchanger Sensor

Functions

• Louver Control

FILE NO. SVM-03009

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 (START/STOP)

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

Filter Reset

– 21 –

7. OPERATION DESCRIPTION

FILE NO. SVM-03009

7-1.Outline of Air Conditioner Control

This is a fixed capacity type air conditioner, which uses a DC motor for an indoor fan. The DC 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

• Transferring 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 motor

• 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

Operations according to the commands from the indoor unit

7-1-1. Louver control

(1) Vertical air flow louver

Position of veritcal air flow louver is automatically controlled according to the operation mode. Besides, position of vertical air flow louver can be arbitrarily set by pressing [FIX] button. The louver position which is set by [FIX] button is stored in the 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 (DC Fan motor)

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

change DC 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.

Table 7-1-1

RAS-24UKHP-ES-1 RAS-18UKHP-ES2

MODEL

Cooling HIGH 1350 950 1150 750

and MED 1150 750 1050 650

Fan only LOW 1000 600 900 530

Heating MED 1200 800 1100 700

MODEL RAS-24UKP-ES-1 RAS-18UKP-ES2

Cooling HIGH 1350 950 1150 750

and MED 1150 750 1050 650

Fan only LOW 1000 600 900 530

Motor speed Air flow level Motor speed Air flow level

(rpm) (m3/h) (rpm) (m3/h)

HIGH 1350 950 1200 800

LOW 1050 650 950 570

LOW+=

MED+=

LOW+MED

2

MED+HIGH

2

+

– 22 –