Toshiba RAS-10UKP-E3 SERVICE MANUAL

SERVICE MANUAL

AIR CONDITIONER

SPLIT WALL TYPE

RAS-07UKHP-E3 / RAS-07UAH-E3-1

FILE NO. SVM-04050

RAS-10UKP-E3 / RAS-10UA-E3-1

RAS-07UKP-E3 / RAS-07UA-E3-1

RAS-10UKPX3 / RAS-10UAX3-1 RAS-07UKPX3 / RAS-07UAX3-1

Septembet 2004

CONTENTS

1. SPECIFICATIONS

2. CONSTRUCTION VIEWS

2-1 Indoor Unit 2-2 Outdoor Unit (RAS-10UA-E3-1, RAS-10UAX3-1) 2-3 Outdoor Unit (RAS-07UAH-E3-1, RAS-07UA-E3-1, RAS-07UAX3-1)

3. WIRING DIAGRAM

3-1 RAS-10UKP-E3 / RAS-10UA-E3-1

RAS-10UKPX3 / RAS-10UAX3-1 3-2 RAS-07UKHP-E3 / RAS-07UAH-E3-1 3-3 RAS-07UKP-E3 / RAS-07UA-E3-1

RAS-07UKPX3 / RAS-07UAX3-1

4. SPECIFICATION OF ELECTRICAL PARTS

4-1 Indoor Unit (RAS-07UKHP-E3) 4-2 Outdoor Unit (RAS-07UAH-E3-1) 4-3 Indoor Unit (RAS-10UKP-E3, RAS-07UKP-E3,

RAS-10UKPX3, RAS-07UKPX3)

4-4 Outdoor Unit (RAS-10UA-E3-1, RAS-10UAX3-1) 4-5 Outdoor Unit (RAS-07UAX3-1, RAS-07UA-E3-1)

FILE NO. SVM-04050

5. REFRIGERATION CYCLE DIAGRAM

5-1 RAS-10UKP-E3 / RAS-10UA-E3-1

RAS-10UKPX3 / RAS-10UAX3-1 5-2 RAS-07UKHP-E3 / RAS-07UAH-E3-1 5-3 RAS-07UKP-E3 / RAS-07UA-E3-1

RAS-07UKPX3 / RAS-07UAX3-1

6. CONTROL BLOCK DIAGRAM

6-1 RAS-07UKHP-E3 / RAS-07UAH-E3-1 6-2 RAS-10UKP-E3 / RAS-10UA-E3-1, RAS-07UKP-E3 / RAS-07UA-E3-1

RAS-10UKPX3 / RAS010UAX3-1, RAS-07UKPX3 / RAS-07UAX3-1

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 Current Limit Control 7-8 Auto Restart Function 7-9 Filter Check Lamp 7-10 Self-Cleaning function

- 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 Troubleshooting Flowcharts

9-6 Troubleshooting for Remote Control

10. PART REPLACEMENT

10-1 Indoor Unit 10-2 Outdoor Unit

FILE NO. SVM-04050

11. EXPLODED VIEWS AND PARTS LIST

11-1 Indoor Unit (E-Parts Assy) 11-2 Indoor Unit 11-3 Outdoor Unit (RAS-10UA-E3-1, RAS-10UAX3-1) 11-4 Outdoor Unit (RAS-07UAH-E3-1) 11-5 Outdoor Unit (RAS-07UAX3-1, RAS-07UA-E3-1)

- 2 -

1. SPECIFICATIONS

FILE NO. SVM-04050

MODEL

RAS-07UKHP-E3 / RAS-07UAH-E3-1

RAS-07UKP-E3 / RAS-07UA-E3-1 RAS-10UKP-E3 / RAS-10UA-E3-1

RAS-07UKPX3 / RAS-07UAX3-1 RAS-10UKPX3 / RAS-10UAX3-1

ITEM Cooling Heating Cooling Cooling

Capacity

Phase 1∅

Power source V 220 − 240

Power consumption kW 0.61 0.68 0.54 0.59 0.58 0.62 0.80 0.85 Power factor % 98 97 98 96 98 96 97 95

Running Indoor A 0.15 current Outdoor A 2.69 2.77 2.35 2.40 2.70 2.70 3.60 3.58

Starting current A 13 11

Moisture removal lit/h 0.8

Noise Indoor (H/M/L) dB 38/32/26

Outdoor (220-240V) dB

Refrigerant

Refrigerant control Capillary tube

Interconnection

pipe

Name of refrigerant R-22 Rated amount kg 0.60 0.57

Gas side size mm 9.52

Connection type Flare connection

Liquid side size mm 6.35

Connection type Flare connection

Maximum length (One way)

Maximum height difference

INDOOR UNIT RAS-07UKHP-E3

Height mm 275

Dimensions Width mm 790

Depth mm 208

Net weight kg 10

Evaporator type Finned tube

Indoor fan type Cross flow fan

High fan m3/h 570 610 570

Air volume Medium fan m3/h 460 490 460

Low fan m3/h 340 400 340

Fan motor output W 20

Air filter Honeycomb woven filter with PP frame

OUTDOOR UNIT

Height mm 530

Dimensions Width mm 660

Depth mm 240

Net weight kg 28 27

Condenser type Finned tube

Outdoor fan type Propeller fan

Airflow volume m

Fan motor output W 20

Compressor

Safety device Fuse, Overload relay

Louver type Automatic louver

Usable outdoor temperature range °C 15 ~ 43 −10 ~ 24 15 ~ 43

Model PH108X1C-4DZDE2

Output W

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

kW 2.00 2.05 2.00 2.05 2.10 2.15 2.65 2.70

Hz 50

16

1.2

39/33/26

44

m 10*

m 5

3

/h 1280 1360 1280 1360 1280 1360 1740 1850

45 45

RAS-07UAH-E3-1

605

46

44 45

1

RAS-07UKP-E3, RAS-07UKPX3

RAS-07UA-E3-1, RAS-07UAX3-1

44

RAS-10UKP-E3, RAS-10UKPX3

RAS-10UA-E3-1, RAS-10UAX3-1

RM5510GNE94

45

0.68

610 460 340

550 780 270

31

750

– 3 –

Note : 1

·

Capacity is based on the following temperature conditions.

FILE NO. SVM-04050

Temperature

Indoor unit inlet air temperature

Outdoor unit inlet air temperature

Note : 2

*1 No need to charge extra refrigerant.

Condition

Cooling Heating

(DB) 27°C20°C

(WB) 19°C15°C

(DB) 35°C7°C

(WB) 24°C6°C

JIS B8615-1

- 4 -

2-1. Indoor Unit

FILE NO. SVM-04050

2. CONSTRUCTION VIEWS

Front panel

Back body

0

66

48

Knock out system

Air inlet

Air filter

790

Heat exchanger

275

Air outlet

120 80

590

Hanger

64

53

48

208

48

Knock out system

0

66

Drain hose (0.54 m)

Hanger

45

Minimum distance to ceiling

275

170 or mor

e

320

Connecting pipe (0.33 m)

For 07,10 series ; Flare ∅9.52

620

235

215

Minimum distance to ceiling

Hanger

more 5 or

6

235

215

Hanger

160

Installation plate outline

Center line

− 5 − 

Connecting pipe (0.43 m)

∅

6.35)

(Flare

For stud bolt

8~∅10)

(∅

For stud bolt (

26

Minimum distance to ceiling

170 or more

Hanger

150150 160

32

9090

∅

6)

4519040

57

Wireless remote control

160

18

2-2. Outdoor Unit (RAS-10UA-E3-1, RAS-10UAX3-1)

A

FILE NO. SVM-04050

A

Detail Drawing (Back Leg)

6 Hole

∅

302

310

32.5

600

52 36

270

R15

R5.5

310

302

30 Drain outlet

∅

436

∅

530

265

FAN GUARD

115

125

∅

11 x 14 Hole

2-

∅8-∅

(For

10 anchor bolt)

90

600 780

62

102

∅6 Hole

∅11 x 14 Hole

B

B Detail Drawing (Front Leg)

310

302

36

52

R15

310 330

COVER PV

Z

Electrical part cover

Installation dimension

45 or more

325

100 or more

Z

Air outlet

View

600

Air inlet

400 or more

600 or more

120

54

75

∅

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

4 x

Liquid side (Flare ∅6.35)

Gas side (Flare ∅9.52) 10 Series

Service port

– 6 −

FILE NO. SVM-04050

2-3. Outdoor Unit (RAS-07UAH-E3-1, RAS-07UA-E3-1, RAS-07UAX3-1)

A

97

B

A

Detail Drawing (Back Leg)

660

50 36

∅

6 Hole

265

273.5

R 15

R 5.5

530

273.5

∅

420

59.5

∅

Fan guard

25Drain outlet

2-

∅

11x14 hole

∅8-∅

(for

B

10 anchor bolt)

Detail Drawing (Front Leg)

∅

6 Hole

∅

11x14 Hole

265

273.5

36 50

R 15

660

Cover PV

Z

242

Installation dimension

100 or more

325

100 or more

Air outlet

500

660

View

Z

600

Air inlet

600 or more

97.5

600 or more

∅

4x

(11)

56

11x14 Long holes (for ∅8-∅10 anchor bolt)

126

48

297

54

Service port

(12.5)273.5 (pitch)

Liquid side (Flare

∅

Gas side (Flare

∅

6.35)

9.62)

− 7 −

3.1 RAS-10UKP-E3 / RAS-10UA-E3-1 RAS-10UKPX3 / RAS-10UAX3-1

Infrared rays receiver and indication parts.

Heat Exchanger Sensor (TC)

Thermo Sensor (TA)

GRN&YEL

Single Phase

BLU (N) BRW (L)

Power Cord

220-240V 50Hz

CN01

121

CN03

121

CN25

CN14

2

1 1

BLU

1 1

2

BLU

2

43 432

BLU

432 43

F01

T6.3 A

250 VAC

R21 R22

5 5

BLU

5

C15

6 6

BLU

3

6 6587

8

7

10

9 11

8

7

10

11

9

BLU

WHI

8

7

10

11

9

10

11

9

4

RY01

SG01

DSA

L01

2

1

4

3

3. WIRING DIAGRAM

TRANS (T T-10)

RED

BLU

WHI

C01

BLK

P04

113

DB50

IC03

3

C50

113

CN05 CN06

+

Regulator

circuit

R47

R46

R48

FILE NO. SVM-04050

GRY

3

MCC-920

CR03

D38

DC 12 V

DC 5 V

C58

CN07 1 2 3 4 5

CN11

1 2 3

CN10

5

3

1

WHI

1

YEL YEL YEL YEL

1

2

3

4

5

1 2 3 4 5

Louver motor

YEL

1

GRY

2

BRW

3

WHI

5

BLK

3

RED

1

1 2 3

4

5 6 6

150 C

1

2

3

4

5

Indoor FAN motor

INDOOR

TERMINAL

BLOCK

OUTDOOR TERMINAL BLOCK

BLK

OVERLOAD RELAY

CN31

BLK

1

(L)

1

FAN MOTOR

BLK

WHI

2

(N)

2

RED

RED WHI

COMPRESSOR

GRN&YEL

CHASSIS

RED

CAPACITOR

PNK WHI

INDOOR

OUTDOOR

CAPACITOR

CN04

PNK

112

2

PNK

TEMP FUSE

73 C

− 8 −

3-2. RAS-07UKHP-E3 / RAS-07UAH-E3-1

73°C

THERMAL FUSE

PNK

1

2

1

2

CN04

Power Cord

GRN&YEL

POWER SUPPLY

SINGLE PHASE

220-240V~ , 50 Hz

BLK

GRN&YEL

WHI

P04

BRW

BLU

CN27

1

3

INDOOR TERMINAL BLOCK

OUTDOOR TERMINAL BLOCK

SG01

DSA

BLK

T02 C.T

R22

VARISTOR

T6.3A 250V

3

4

RY03

BLK

RY04

BLK

WHI

2

1 4

(L)2(N)

1

F01

RY01

CR01

CR02

BLU

RED

3

C15

BLU

R21 VARISTOR

L01

1

2

3

1

2

3

GRY

BRW

YEL

BLU

GRN&YEL

4

Louver motor

YEL

3

2 1

5

4

3

2 1

5

4

CN07

C01 R01

CR03

C58

150

5 5

BLK

24

1

2466

1

CN11

AC FAN MOTOR

INDOOR

OUTDOOR

CHASSIS

CN25

WHI

MAIN P.C. BOARD

MCC-862

R47

R46

D38

R48

3

1

CN10

3

1

WHI

RED

35 35

FILE NO. SVM-04050

INFRARED RAYS RECEIVE AND INDICATION PARTS

3

1

4 5 6 7 8 9

2

3

1

4 5 6 7 8 9

2

BLU5BLU6BLU7BLU8BLU9BLU10BLU11BLU

3

1 1

2

DB01

3

CN13

4

C02

5

DC 12V DC 5V

IC03

112

2

BLK

THERMO SENSOR

(TA)

10 11 10 11

BLU2BLU4WHI

6 7 8 9

10 11

POWER SUPPLY CIRCUIT

HEAT

EXCHANGER

SENSOR

(TC)

112

BLK

2

BLK

CN01CN03

OVER LOAD RELAY

COMPRESSOR

BLK

PNK

WHI

RED

SOLENOID COIL

RED

CAPACITOR

FAN MOTOR

− 9 −

WHI BLK

3.3 RAS-07UKP-E3 / RAS-07UA-E3-1 RAS-07UKPX3 / RAS-07UAX3-1

Infrared rays receiver and indication parts.

Heat Exchanger Sensor (TC)

Thermo Sensor (TA)

GRN&YEL

Single Phase

BLU (N) BRW (L)

Power Cord

220-240V 50Hz

CN01

121

CN03

121

CN25

CN14

2

1 1

BLU

1 1

2

BLU

2

43 432

BLU

432 43

F01

T6.3 A

250 VAC

8

6

7

5 5

BLU

5

R21 R22

C15

6

BLU

6 6587

3

9 11

8

7

9

BLU

8

7

9 9

RY01

L01

2

3

10 10

11

BLU

WHI

10

11

10

11

4

SG01

DSA

1

4

C01

BLK

P04

RED

TRANS (T T-10)

WHI

113

CN05 CN06

3

DB50

C50

+

IC03

R46

BLU

113

Regulator

circuit

R47

R48

FILE NO. SVM-04050

GRY

3

MCC-920

DC 12 V

DC 5 V

CR03

D38

C58

CN07 1 2 3 4 5

CN11

1 2 3

CN10

5

3

1

WHI

1

YEL YEL YEL YEL

1

2

3

4

5

1 2 3 4 5

Louver motor

YEL

1

GRY

2

BRW

3

WHI

5

BLK

3

RED

1

1 2 3 4 5 6 6

150 C 1 2 3 4 5

Indoor FAN motor

INDOOR

TERMINAL

BLOCK

OUTDOOR TERMINAL BLOCK

BLK

OVERLOAD RELAY

CN31

BLK

1

(L)

1

FAN MOTOR

BLK

WHI

2

(N)

2

RED

RED WHI

COMPRESSOR

GRN&YEL

CHASSIS

RED

CAPACITOR

PNK WHI

INDOOR

OUTDOOR

CAPACITOR

CN04

PNK

112

2

PNK

TEMP FUSE

73 C

− 10 −

FILE NO. SVM-04050

4. SPECIFICATION OF ELECTRICAL PARTS

4-1. Indoor Unit (RAS-07UKHP-E3)

No. Parts name Type Specifications

1 Fan motor (for indoor) SKF-220-20-4A-1 AC Motor with 150 C thermo fuse 2 Thermo sensor (TA-sensor) 10k at 25 C 3 Switching transformer (T01) SWT-47 4 Microcontroller unit (IC30) TMP87CM40AN 5 Heat exchanger sensor

(TC-sensor) 6 Line filter (L01) LC*SS11V-06270 27mH, 600mA 7 Bridge rectifier (DB01) D3SBA60 4A, 600 V 8 Capacitor (C02) KMH400VSSN47M22S 47mF, 400 V 9 Fuse (F01) TSCR6.3A T6.3A, 250VAC

10 Varistor (R21, R22) 15G561K 560 V 11 Resistor (R01) RF-2TK5R6 5.6 , 2 W 12 Louver motor MP24GA 12VDC 13 Relay (Comp., RY01) DI12D1 Rating 20A/AC250 V, 12VDC 14 Relay (Fan, RY03) G5N-1A Rating 3A/AC250 V, 12VDC 15 Relay (Solenoide, RY04) G5N-1A Rating 3A/AC250 V, 12VDC

W

10k at 25 C

W

°

4-2. Outdoor Unit (RAS-07UAH-E3-1)

No. Parts name Type Specifications

Output (Rated) 605W, 2poles, 1 phase, 220 − 240V, 50Hz

1 Compressor PH108X1C-4DZDE2 Winding resistance (Ω) C-R C-S

(at 20°C) 4.84±5% 4.40±5%

2 Fan motor (for outdoor)

Running capacitor 3

(for fan motor)

Running capacitor 4

(for compressor)

5 Overload relay JMRA99208-9201 U/T: 4.2A (80°C), OPEN: 135±5°C, CLOSE: 69±11°C

HF-240-20B or SKF-240-20B

DS451155CBPQC AC 450V, 1.5µ F

DS371256CPN AC 370V, 25µ F

Output (Rated) 20W, 6poles, 1 phase, 220 − 240V, 50Hz

Winding resistance (Ω) Red-Black White-Black

(at 20°C)

387.3 or 235.2

466.2 or 260.1

- 11 -

FILE NO. SVM-04050

4-3. Indoor Unit (RAS-10UKP-E3, RAS-07UKP-E3, RAS-10UKPX3, RAS-07UKPX3)

No. Parts name Type Specifications

1 Fan motor (for indoor) SKF- 220-20-4A-1 AC Motor with 150 C thermo fuse 2 Thermo sensor (TA-sensor) 10k at 25 C 3 Switching transformer 4 Microcontroller unit (IC30) TMP87CM40AN 5 Heat exchanger sensor

(TC-sensor) 6 Line filter (L01) LC*SS11V-06270 27mH, 600mA 7 Bridge rectifier (DB50) KBP06M/51 1.5A, 600 V 8 Capacitor (C50) PF1E222MNN1625 2200mF, 25 V 9 Fuse (F01) BET6.3A T6.3A, 250VAC

10 Varistor (R21, R22) 15G561K 560 V

12 Louver motor MP24Z 12VDC 13 Relay (Comp., RY01) DI1U Rating 25A/AC250 V, 3~48VDC

TT-10

W

10k at 25 C

W

°

4-4. Outdoor Unit (RAS-10U

No. Parts name Type Specifications

1 Compressor RM5510GNE94 Winding resistance (W) C-R C-S

2 Fan motor (for outdoor)

Running capacitor

3

(for fan motor) Running capacitor

4

(for compressor)

5 Overload relay

A-E3-1, RAS-10UAX3-1)

Output (Rated) 750 W, 2 poles, 1 phase, 220 - 240 V, 50Hz

(at 20°C) 3.71 4.09

HF-240-20B or SKF-240-20B

DS451155BPQC AC 450 V, 1.5 F

DS371256CPNB AC 370 V, 25 F

LPAP960B

Output (Rated) 20 W, 6 poles, 1 phase, 220 - 240 V, 50Hz Winding resistance (W) Red-Black White-Black (at 20°C)

m

U/T:

6.1A (80°C), OPEN:

387.3 or 235.2

135±5°C, CLOSE: 78±11°C

466.2 or 260.1

- 12 -

FILE NO. SVM-04050

4-5. Outdoor Unit (RAS-07UAX3-1, RAS-07UA-E3-1)

No. Parts name Type Specifications

Output (Rated) 605W, 2poles, 1 phase, 220 − 240V, 50Hz

1 Compressor PH108X1C-4DZDE2 Winding resistance (Ω) C-R C-S

(at 20°C) 4.84±5% 4.40±5%

Output (Rated) 20W, 6poles, 1 phase, 220 − 240V, 50Hz

2 Fan motor (for outdoor)

Running capacitor

3

(for fan motor)

Running capacitor

4

(for compressor)

5 Overload relay JMRA99208-9201 U/T: 4.2A (80°C), OPEN: 135±5°C, CLOSE: 69±11°C

HF-240-20B or SKF-240-20B

DS451155CBPQC AC 450V, 1.5µF

DS371256CPNB AC 370V, 25µF

Winding resistance (Ω) Red-Black White-Black

(at 20°C) 387.3 or 235.2 466.2 or 260.1

− 13 −

5. REFRIGERATION CYCLE DIAGRAM

5-1. RAS-10UKP-E3 / RAS-10UA-E3-1

RAS-10UKPX3 / RAS-10UAX3-1

FILE NO. SVM-04050

Indoor unit

Cooling

0.39 m (Connecting pipe) Æ9.52

O.D.:9.52 mm O.D.:6.35 mm

Cooling

Packed valve

Cooling

P

(Æ9.52)

Compressor

RM5510GNE94

Heat exchanger

Cross flow fan

T1

0.49 m (Connecting pipe) Æ6.35

Packed valve

(Æ6.35)

Capillary tube

Æ1.5 x 1100l

Heat exchanger

Refrigerant R22 : 0.68 kg.

Cooling

Propeller fan Outdoor unit

Mark ( ) means check points of Gas Leak.

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 0.54 12.2 High 27/19 35/24

Cooling Overload 0.65 16.5 High 32/23 43/26

Low temperature 0.45 5.0 Low 21/15 21/15

Note

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

- 14 -

5-2. RAS-07UKHP-E3 / RAS-07UAH-E3-1

FILE NO. SVM-04050

Indoor unit

Cooling

0.39m (Connecting pipe) ∅9.52

O.D.:9.52mm O.D.:6.35mm

Cooling

Heating

P

Packed valve

(∅9.52)

Heating

4-way valve

Cooling

Compressor

PH108X1C-4DZDE2

Accumulator

Heat exchanger

Cross flow fan

T1

0.49m (Connecting pipe) ∅6.35

Packed valve

(∅6.35)

Capillary tube

∅1.0x900S

(2 pcs.)

Heat exchanger

Refrigerant R-22 : 0.60 kg.

Fan speed

(indoor)

Ambient temp.

conditions DB/WB

(°C)

Indoor Outdoor

Cooling Heating

50Hz

Propeller fan Outdoor unit

Standard

pressure P

(MPaG)

Mark( )means check points of Gas Leak.

Surface temp. of heat

exchanger interchanging

pipe T1 (°C)

Standard 1.32 33.0 High 20/– 7/6

Heating Overload 1.69 45.5 Low 27/– 24/18

Low temperature 1.10 30.0 High 20/––10/–10 Standard 0.59 14.0 High 27/19 35/24

Cooling Overload 0.68 18.8 High 32/23 43/26

Low temperature 0.45 5.0 Low 21/15 21/15

Note :

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

- 15 -

5-3. RAS-07UKP-E3 / RAS-07UA-E3-1

RAS-07UKPX3 / RAS-07UAX3-1

FILE NO. SVM-04050

Indoor unit

Cooling

0.39m (Connecting pipe) ∅9.52

O.D.:9.52mm O.D.:6.35mm

Cooling

Packed valve

Cooling

P

(∅9.52)

Compressor

PH108X1C-4DZDE2

Heat exchanger

Cross flow fan

T1

0.49m (Connecting pipe) ∅6.35

Packed valve

(∅6.35)

Capillary tube

∅1.5x1500S

Heat exchanger

Refrigerant R-22 : 0.57 kg.

Fan speed

(indoor)

50Hz

Cooling

Propeller fan Outdoor unit

Standard

pressure P

(MPaG)

Mark( )means check points of Gas Leak.

Surface temp. of heat

exchanger interchanging

pipe T1 (°C)

Standard 0.59 13.5 High 27/19 35/24

Cooling

Overload 0.67 17.5 High 32/23 43/26 Low temperature 0.45 5.0 Low 21/15 21/15

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

– 16 –

6. CONTROL BLOCK DIAGRAM

6-1. RAS-07UKHP-E3 / RAS-07UAH-E3-1

FILE NO. SVM-04050

Heat Exchange sensor

Thermo. Sensor

Current Sensor

(Compressor Current)

Infrared Rays Signal Reciver

Main Unit Control Panel

Functions

• Louver Control

•3-minutes Delay at Restart

for Compressor

Initiallizing Circuit

Clock Frequency Oscillator Circuit

Power Supply

Circuit

Noise Filter Relay Driver, Louver Driver

•Motor Revolution Control

•Processing

(Temperature Processing)

•Timer

Compressor

ON/OFF

Signal

Outdoor Fan

M.C.U.

ON/OFF

Signal

4-Way Valve

ON/OFF

Signal

Operation

Display

Timer

Display

Filter Sign

Display

Hi Power

Sign Display

PRE DEF.

Sign Display

Indoor Fan

Motor

Louver

ON/OFF

Signal

Louver

Motor

220-240 V~, 50Hz

REMOTE CONTROL

Relay

RY01

Compressor 4-Way Valve

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

Relay

Outdoor Fan Motor

RY03

Infrared Rays

Relay

RY04

Hi power

Filter Reset

− 17 −

FILE NO. SVM-04050

6-2. RAS-10UKP-E3 / RAS-10UA-E3-1, RAS-07UKP-E3 / RAS-07UA-E3-1,

RAS-10UKPX3 / RAS-10UAX3-1, RAS-07UKPX3 / RAS-07UAX3-1

Main Unit Control Panel M.C.U.

Heat Exchange sensor

Thermo. Sensor

Infrared Rays Signal Reciver

Initiallizing Circuit

Clock Frequency Oscillator Circuit

Functions

• Louver Control

•3-minutes Delay at Restart

for Compressor

•Motor Revolution Control

•Processing

(Temperature Processing)

•Timer

Operation

Display

Timer

Display

Filter Sign

Display

Hi Power

Sign Display

Fan Only

Sign Display

Indoor Fan

Motor

220-240 V~, 50Hz

REMOTE CONTROL

Power Supply

Circuit

Noise Filter Relay Driver, Louver Driver

Operation (START/STOP)

Operation Mode Selection

AUTO, COOL, DRY, FAN ONLY

Compressor

ON/OFF

Signal

Relay

RY01

Compressor, Outdoor Fan Motor

Infrared Rays

Remote Control

Temperature Setting

Fan Speed Selection

Louver

ON/OFF

Signal

Louver

Motor

ON TIMER Setting

OFF TIMER Setting

Louver Auto Swing

Louver Direction Setting

ECO

Hi power

Filter Reset

− 18 −

7. OPERATION DESCRIPTION

FILE NO. SVM-04050

7-1. Outline of Air Conditioner Control

This is a fixed capacity type air conditioner, which uses AC motor for an indoor fan. The AC motor drive circuit is mounted in the indoor unit. And electrical

parts which driving the compressor and the outdoor

fan motor, are mounted in the outdoor unit.

The air conditioner is controlled by the controller mounted in the indoor unit. The controller operates all components based on the commands transmitted from the remote control and the feedback data of the sensor is as follow:

• The temperature measurement at the air inlet of the indoor heat exchanger by the indoor temperature sensor

•The temperature measurement at the indoor heat exchanger by the indoor heat exchanger temperature sensor

• Indoor fan motor operation control

• Louver motor control

• LED display control

• Outdoor fan motor operation control

• Compressor operation control

• Receiving the information of the operation

status and judging the information or the indication of errors

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 microcontroller, 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.

LOW

=

LOW+MED

+

2

MED+=

MED+HIGH

2

+

OPERATION

MODE

RAS-07UK Series

RAS-07UKH Series

Model

RAS-10UK Series

Table 7-1-1

FAN TA P

Cooling UH H M L L- UL SL

Fan only H M L L-

Dry M L L- UL SL

Heat UH H M L L- UL SL

rpm 1350 1200 1050 1000 950 900 800 750 700 650

Air flow volume (m

rpm

Air flow volume (m3/h)

rpm

Air flow volume (m3/h)

3

/h) 650 570

1300

630

1350

1300

630

1250

610

1250 1050 1000 950 900 800 750 700 650

610 490 460 430 400 340 310 280 250

650

1200

570

1300

630

460 430 400 340 310 280 250

490

1050

490

1000

460

900 400

800 340

750

310

700

280

650

250

− 19 −

FILE NO. SVM-04050

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 [START / STOP] 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 microcontroller so that the previous operation can be effected thereafter simply by pressing [START / STOP] 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.

°C

+3 +2.5 +2

-

+1.5 +1 +0.5

(Room temp.) (Preset temp.)

Preset temp.

0

(Preset temp.: 22°C)

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 operation cannot be set.

+

, MED, MED+ or

M+

*1 *1 *1 L

-

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 on the remote control are controlled as shown in Fig. 7-2-2.

°C

ON ON

OFF OFFOFF ON

4-way valve

Compressor

Outdoor fan

OPERATION

-

(Room temp.) (Preset temp.)

Preset temp.

0.5

0

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.

°C

(Preset temp.)

−

(Room temp.)

Preset temp.

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

0

-0.5

M+

*1 *1 *1

L

-

NOTE :

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

controlled by the difference in motor speed between M+ and L-.

display

- 20 -

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

FILE NO. SVM-04050

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 on the remote control are controlled as shown in Fig. 7-2-4.

°C

ON:6min.

-

(Room temp.) (Preset temp.)

Preset temp.

+3

+2

+1

ON:6min.

OFF:4min.

ON:5min.

OFF:5min.

OFF

0

Compressor

OFF

ON:5min.

OFF

4-way valve

OFF:4min.

OFF:5min.

Outdoor fan

Fig. 7-2-4

ON

display

OPERATION

7-2-4. Heating operation (UKH Series only)

([MODE] button on the remote control is set to the heating operation.)

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

operation display on the remote control are controlled as shown in Fig. 7-2-6.

°C

Preset temp.

0

-0.5

-

(Room temp.) (Preset temp.)

ON

OFF

ON

Compressor

OFF

ON

4-way valve

Outdoor fan

Fig. 7-2-6

ON

display

OPERATION

(2) The microcontroller 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 *SL SLL L SL 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.

°C

0

-0.5

-1

-1.5

-2

-

-5.0

-5.5

[FAN AUTO]

(Room temp.) (Preset temp.)

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 flow [FAN:AUTO]

(4) The Hi POWER operations cannot be set.

- 21 -