Carrier 42HNR018, 38HNR018 user guide manual

SERVICE MANUAL

AIR CONDITIONER

SPLIT WALL TYPE

42CJR024-723 / 38CJR024-723
42CJR018-723 / 38CJR018-723

FILE NO. SVM-05010-2

42TAR024X-723 / 38TAR024X-723

42TAR018-723 / 38TAR018-723

42HNR024-713 / 38HNR024-713

42HNR018-713 / 38HNR018-713

18 Class

(Heat pump model)

24 Class18 Class

(Cooling only model)

Revised Aug, 2005

FILE NO. SVM-05010

CONTENTS

1. SPECIFICATIONS

2. CONSTRUCTION VIEWS

2-1 Indoor Unit (42CJR024-723, 42TAR024X-723, 42TAR018-723)
2-2 Outdoor Unit (42CJR018-723, 42HNR018-713, 42HNR024-713)
2-3 Outdoor Unit (38CJR024-723, 38TAR024X-723, 38TAR018-723, 38HNR024-713)
2-4 Outdoor Unit (38CJR018-723)

2-5 Outdoor Unit (38HNR018-713)

3. WIRING DIAGRAM

3-1 42CJR024-723 / 38CJR024-723, 42TAR024X-723 / 38TAR024X-723
3-2 42CJR018-723 / 38CJR018-723

3-3 42TAR018-723 / 38TAR018-723
3-4 42HNR018-713 / 38HNR018-713

3-5 42HNR024-713 / 38HNR024-713

4. SPECIFICATION OF ELECTRICAL PARTS

4-1 Indoor Unit (42CJR024-723, 42CJR018-723, 42TAR024X-723, 42TAR018-723)
4-2 Indoor Unit (42HNR024-713, 42HNR018-713)
4-3 Outdoor Unit (38CJR024-723, 38TAR024X-723)
4-4 Outdoor Unit (38CJR018-723)

4-5 Outdoor Unit (38TAR018-723)
4-6 Outdoor Unit (38HNR024-713)

Outdoor Unit (38HNR018-713)

4-7

5. REFRIGERATION CYCLE DIAGRAM

5-1 42CJR024-723 / 38CJR024-723, 42TAR024X-723 / 38TAR024X-723
5-2 42HNR024-713 / 38HNR024-713
5-3 42CJR018-723 / 38CJR018-723
5-4 42TAR018-723 / 38TAR018-723
5-5 42HNR018-713 / 38HNR018-713

6. CONTROL BLOCK DIAGRAM

6.1 42CJR024-723, 42CJR018-723, 42TAR024X-723, 42TAR018-723

6.2 42HNR024-713, 42HNR018-713

7. OPERATION DESCRIPTION

7-1 Outline of Air Conditioner Control
7-2 Description of Operation Circuit
7-3 High-Temperature Limit Control
7-4 Low-Temperature Limit Control
7-5 Defrost Operation
7-6 Auto Restart Function
7-7 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 Parts
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-05010

10. PART REPLACEMENT

10-1 Indoor Unit
10-2 Outdoor Unit (38CJR024-723, 38TAR024X-723, 38TAR018-723)
10-3 Outdoor Unit (38CJR018-723)
10-4 Outdoor Unit (38HNR024-713)

10-5 Outdoor Unit (38HNR018-713)

11. EXPLODED VIEWS AND PARTS LIST

11-1 Indoor Unit (E - Parts Assy)
11-2 Indoor Unit
11-3 Outdoor Unit (38CJR024-723, 38TAR024X-723)
11-4 Outdoor Unit (38TAR018-723)

11-5 Outdoor Unit (38CJR018-723)
11-6 Outdoor Unit (38HNR024-713)
11-7 Outdoor Unit (38HNR018-713)

– 2 –

1. SPECIFICATIONS

FILE NO. SVM-05010

ITEM Cooling

Capacity

Power source V 220 – 240 220

Power consumption W 2420 2510 2250
Power factor % 98 92 95

R unning current A

Starting current A 67
Moisture removal lit/h 2.7

Noise

Refrigerant

Refrigerant control Capillary tube

Interconnection Connection type Flare connection
pipe Maximum length

INDOOR UNIT 42CJR024-723 42TAR024X-723

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

Fan motor output W 30
Air filter Honeycomb woven filter with PP frame

OUTDOOR UNIT 38CJR024-723 38TAR024X-723

Dimensions Width mm 880

Net weight kg 58
Condenser type Finned tube
Outdoor fan type Propeller fan
Airflow volume m3/h 3380 3560 3380
Fan motor output W 65

Compressor

Safety device IOL
Louver type Automatic louver
Usable outdoor temperature range °C 21 ~ 43

Note

*1 Chargeless pipe
*2 Maximum pipe

Indoor (H/M/L) dB 45/41/37
Outdoor (220 – 240V) dB 56-57 56
Name of refrigerant R22
Rated amount kg 1.70

Gas side size mm ∅15.88
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

Low fan m3/h 625

Height mm 690

Depth mm 310

Model PH400X3CS-4KT1
Output W 1800

MODEL

kW

Phase 1∅

Hz 50

Indoor/Outdoor

42CJR024-723 / 38CJR024-723 42TAR024X-723 / 38TAR024X-723

220V 240V 220V

6.40 6.45 6.40

220V 240V 220V

0.3/10.9 0.3/11.1 0.3/10.5

1

m

m10

15*

2

– 3 –

FILE NO. SVM-05010

ITEM Cooling

Capacity

Power source V 220 – 240 220

Power consumption W 1920 2000 1560
Power factor % 92 86 98

Running current A

Starting current A 42 42
Moisture removal lit/h 2

Noise

Refrigerant

Refrigerant control Capillary tube

Interconnection Connection type Flare connection
pipe Maximum length

INDOOR UNIT 42CJR018-723 42TAR018-723

Dimensions Width mm 998

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

Air volume Medium fan m3/h 667

Fan motor output W 30
Air filter Honeycomb woven filter with PP frame

OUTDOOR UNIT 38CJR018-723 38TAR018-723

Dimensions Width mm 780 880

Net weight kg 41 51
Condenser type Finned tube
Outdoor fan type Propeller fan
Airflow volume m3/h 2120 2200 3380
Fan motor output W 42 65

Compressor

Safety device IOL
Louver type Automatic louver
Usable outdoor temperature range °C 21 ~ 43

Note

*1 Chargeless pipe
*2 Maximum pipe

Indoor (H/M/L) dB 42/39/35
Outdoor (220 – 240V) dB 51 52 56
Name of refrigerant R22
Rated amount kg 1.17 1.47

Gas side size mm ∅12.7 ∅15.88
Connection type Flare connection
Liquid side size mm ∅6.35

(One way) 20*
Maximum height

difference

Height mm 298

Depth mm 208

High fan m3/h 750 900

Low fan m3/h 543

Height mm 550 690

Depth mm 270 310

Model PH340X3C-4KT1 PH290X2C-4FT1

Output W 1500 1700

MODEL

kW

Phase 1∅

Hz 50

Indoor/Outdoor

42CJR018-723 / 38CJR018-723 42TAR018-723 / 38TAR018-723

220V 240V 220V

5.20 5.25 5.10

220V 240V 220V

0.2/9.25 0.2/9.50 0.3/6.94

45/39/33

1

m

m8

15*

2

– 4 –

FILE NO. SVM-05010

MODEL

ITEM

Capacity kW

Phase ∅1

Power source V 220 − 240

Power consumption W

Power factor %

Running current A

Indoor/Outdoor

Starting current A

Moisture removal lit/h

Noise

Refrigerant

Refrigerant control Capillary tube

Interconnection Connection type Flare connection

pipe Maximum length

INDOOR UNIT

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

Fan motor output W 30

Air filter Honeycomb woven filter with PP frame

OUTDOOR UNIT

Dimensions Width mm 880 830

Net weight kg

Condenser type Finned tube

Outdoor fan type Propeller fan

Airflow volume m3/h

Fan motor output W

Compressor

Safety device

Louver type Automatic louver
Usable outdoor temperature range °C 21 ~ 43

Note

*1 Chargeless pipe

Indoor (H/M/L) dB 45/41/37 42/39/35
Outdoor (220 − 240 V) dB

Name of refrigerant R22
Rated amount kg 1.75

Gas side size mm ∅15.88 ∅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

Low fan m3/h 625

Height mm 690 538

Depth mm 310 300

Model

Output W

220 V

6.30

Hz 50

2430

96

220 V

0.3/

11.2

m

m

*2 Maximum pipe

42HNR024-713
38HNR024-713

Cooling

Heating Cooling

240 V

240 V

6.90 5.05

6.30

2510

92

240 V

0.3/

11.1

56-57

42HNR024-713 42HNR018-713

38HNR024-713 38HNR018-713

3380

2JS386D5BB02

IOL, Td Sensor IOL, Td Sensor

220 V

6.80

2390

94

220 V

0.3/

11.2

60

2.5

2

10 8

61 54

1800

−10 ~ 24

2490

90

240 V

0.3/

11.28

57-58

790
667

3560

– 5 –

15*

1

65

220 V

1920

95

220 V

0.2/

9.0

42HNR018-713
38HNR018-713

240 V

5.90

5.05

2040

88

240 V

0.2/

9.5

52-53 53-54

750
667
543

2105 2310

2JS350D5A02

21 ~ 43 −10 ~ 24

45

2.0

1.17

20*

298
998

208

13

1700

220 V

5.80

1800

94

220 V

0.2/

8.5

2

Heating

240 V

1950

86

240 V

0.2/

9.3

800
708
584

Note : 1

• Capacity is based on the following temperature conditions.

FILE NO. SVM-05010

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

42CJR024-723 / 38CJR024-723 42CJR018-723 / 38CJR018-723
42TAR024X-723 / 38TAR24X-723
42HNR024-713 / 38HNR024-713

Over 15 m up to 25 m (30 g/m)

Condition

Cooling Heating

(DB) 27°C20°C

(WB) 19°C12°C

(DB) 35°C7°C

(WB) 24°C6°C

15 m or less 15 m or less

JIS B8615-1

42TAR018-723 / 38TAR18-723
42HNR018-713 / 38HNR018-713

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

– 6 –

2. CONSTRUCTION VIEWS

2-1. Indoor Unit (42CJR024-723, 42TAR024X-723, 42TAR018-723)

Back body
Front panel

Grille inlet

298

998

FILE NO. SVM-05010

208

775

51

Knock out system Knock out system

50

75 65

Drain hose (0.54 m)
Connecting pipe (0.49 m)

(Flare ∅6.35)

20

10

(For stud bolt ∅6)
(For stud bolt ∅8 − ∅10)

29

41
55
5555

Outline of indoor unit

Connecting pipe (0.39 m)
(Flare ∅15.88)

55 or more

Minimum distance

to ceiling

298

998

763.5
450

20

48

50

48

54

Wireless remote control

850

135

16

∅65

100

Installation
Plate outline

– 7 –

100

∅65

40

2-2.Outdoor Unit (42CJR018-723, 42HNR018-713, 42HNR024-713)

Back body
Front panel

Grille inlet

298

998

FILE NO. SVM-05010

208

775

51

Knock out system Knock out system

50

75 65

Drain hose (0.54 m)
Connecting pipe (0.49 m)

(Flare ∅6.35)

20

10

(For stud bolt ∅6)
(For stud bolt ∅8 − ∅10)

29

41
55
5555

Outline of indoor unit

Connecting pipe (0.39 m)
(Flare ∅12.7)

55 or more

Minimum distance

to ceiling

298

998

763.5
450

20

48

50

48

54

Wireless remote control

850

135

16

∅65

100

Installation
Plate outline

– 8 –

100

∅65

40

FILE NO. SVM-05010

2-3.Outdoor Unit (38CJR024-723, 38TAR024X-723, 38TAR018-723,38HNR024-713)

for ∅8 − ∅10

anchor bolt

4-∅12x18

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 ∅15.88)

Service Port

12

364

340 (pitch)

12

88

74

880

A

600

A Detail Drawing

50

63.8
340

27

4-∅12x18 holes

∅12x18 hole

340

690

(for ∅8 − ∅10 anchor bolt)

Handle

– 9 –

2-4. Outdoor Unit (38CJR018-723)

A

FILE NO. SVM-05010

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

∅6 Hole

∅11x14 Hole

B

B Detail Drawing (Front Leg)

310

302

36

52

R15

310

330

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

600 or more

120

5

75

4

Service port

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

Liquid side
(Flare ∅6.35)

Gas side
(Flare ∅12.7)
13 Series

−

10

−

2-5. Outdoor Unit (38HNR018-713)

FILE NO. SVM-05010

4x∅11x14

600 or more

600

600 or

Air inlet

Installation dimension

Air inlet

100 or more

more

325

100 or more

anchor bolt

for ∅8 − ∅10

Air

outlet

(for fixing outdoor unit)

8-∅6 holes

6-∅11x14 holes

(for ∅8 − ∅10 anchor bolt)

Liquid side

Electric

Parts cover

6.35)

∅

(Flare

Service Port

12.7)

∅

Gas side

(Flare

344

91 54

60

50

90

120

A

R10

600

50

35

A Detail Drawing

52

325

23

6 hole


∅

11x14 hole


∅

25 Drain outlet

∅



Fan guard

Handle

600

830

90



538

300

– 11 –

FILE NO. SVM-05010-1

3. WIRING DIA GRAM

3-1.42CJR024-723 / 38CJR024-723, 42TAR024X-723 / 38TAR024X-723

COLOR IDENTIFICATION

BRW : BROWN
RED : RED

BLK

CN27

GRN&YEL

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

Varistor

DSA

F01

250V

MAIN P.C. BOARD
(WP-003)

Varistor

Louver
motor

BLU

PNK

6

5 223311

6

5

Infrared rays receive

and Indication parts

5 98

1 2 3 4 6 10

BLU

BLU

BLU

BLU

YEL

RED

BRW

ORN

4

CN07

4

BLU

1 2 3 4 65 10

5 64

321

Power supply
circuit

Control
Fan motor
circuit

GRY

BRW

YEL

105 64321

8 9

7
7

BLU

BLU

7
7

8 9

CN25

BLU

BLU

WHI

98

CN13

10

2

1

21

1

BLK2BLK

CN03

CN01

2

1

BLK

BLK

OUTDOOR
TERMINAL
BLOCK

POWER SUPPLY

240 V ~ 50 Hz

220 −



(For 38CJR024-723)

220 V ~ 50 Hz

(FOR 38TAR024X-723)

L

N

BLK

RED

BLK

RED

BLK BLK

RED

Indoor
terminal

block

i

SPARK KILLER

A2 A1

52C

1/L1

2/T1

3/L2 4/T2

5/L3 6/T3

1

1

2

2

GRN&YEL

RED

CAPACITOR

3

3

GRY

i

CHASSIS

RED

WHI
PNK

COMPRESSOR

INDOOR

UNIT

OUTDOOR
UNIT

CAPACITOR

S

R

WHI

RED

BLK

C

COMPRESSOR TERMINAL

FAN MOTOR

C

RS

BLK

1

2

4

3

1

2

66554

3

145 C

TEMP FUSE

Thermo.
sensor

(TA)

Heat exchanger
sensor

(TC)

MAGNETIC CONTACTOR

− 12 −

3-2. 42CJR018-723 / 38CJR018-723

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

P04

BLK

6.3A

CN30
CN31

CN27

GRN&YEL

Varistor

DSA

F01

250V

MAIN P.C. BOARD

(WP-003)

Varistor

Louver
motor

BLU

PNK

6

5 223311

6

5

FILE NO. SVM-05010-1

Infrared rays receive

and Indication parts

1 2 3 4 6 10

BLU

BLU

BLU

YEL

RED

BRW

ORN

4

CN07

4

BLU

1 2 3 4 65 10

321

Power supply
circuit

Control

Fan motor

circuit

GRY

BRW

YEL

1

2

4

3

1

2

3

5 98

BLU

5 64

66554

BLU

8 9

7
7

BLU

BLU

7

8 9

7

Thermo.
sensor

(TA)

BLU

98

1

105 64321

10

21

BLK2BLK

WHI

CN03

CN25

CN13

2

1

CN01

2

1

BLK

BLK

Heat exchanger
sensor

(TC)

OUTDOOR
TERMINAL
BLOCK

RED

POWER SUPPLY
220 − 240 V ~ 50 Hz

BLK

MAGNETIC

CONTACTOR

CAPACITOR

145 C

TEMP FUSE

Indoor

l

termina

block

L

N

BLK

RED

RED

i

GRN&YEL

1

1

RED

3

2

2

3

i

CHASSIS

GRN&YEL

BLK

BLK

INDOOR

UNIT

OUTDOOR

UNIT

SPARK KILLER

GRY

R

U

T

S

W

V

(or A)

A1

(or B)

A2

CAPACITOR

RED

S

WHI
PNK

C

BLK

R

COMPRESSOR

C

S

R

COMPRESSOR TERMINAL

WHI

RED

FAN MOTOR

BLK

– 13

–

3-3.42TAR018-723 / 38TAR018-723

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

P04

BLK

DSA

F01

250V

6.3A

CN30
CN31

CN27

GRN&YEL

Louver
motor

Varistor

Varistor

MAIN P.C. BOARD
(WP-003)

BLU

PNK

6

5 223311

4

6

5

4

FILE NO. SVM-05010-1

Infrared rays receive

and Indication parts

1 2 3 4 6 10

BLU

BLU

BLU

YEL

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

BLU

5 64

105 64321

8 9

7
7

BLU

7
7

BLU

8 9

CN25

BLU

WHI

98

CN13

10

2

1

21

1

BLK2BLK

CN03

CN01

2

1

BLK

BLK

OUTDOOR
TERMINAL

BLOCK

Indoor
termina

block

POWER SUPPLY
220 V ~ 50 Hz

L

N

BLK

RED

BLK

RED

BLK BLK

RED

l

1

1

i

SPARK KILLER

A1 A2

52C

R U

SV

TW

2

2

GRN&YEL

RED

CAPACITOR

3

3

GRY

i

CHASSIS

RED

WHI
PNK

COMPRESSOR

INDOOR
UNIT

OUTDOOR
UNIT

CAPACITOR

S

R

WHI
RED

BLK

C

COMPRESSOR TERMINAL

FAN MOTOR

C

S

R

BLK

1

2

4

3

1

2

66554

3

145 C

TEMP FUSE

Thermo.
sensor

(TA)

Heat exchanger
sensor

(TC)

MAGNETIC CONTACTOR

− 14 −

.

3-4

42HNR018-713 /38HNR018-713

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

P04BLK

CN30
CN31

DSA

Varistor

F01

Louver
motor

250V6.3A

MAIN P.C. BOARD

(WP-003)

BLU

PNK

6

5 223311
5

6

FILE NO. SVM-05010-1

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

BLU

BLU

BLU

5 64

321

CN25

10

9871 2 3

WHI

BLU

BLU

BLU

98

7

CN13

10

8 9

7

+12 VDC

+5 VDC

WP-003

C

S

R

COMPRESSOR TERMINAL

220 − 240V ~ 50 Hz

L

BLK

RED

BLK

RED

WHI
PNK

N

FERRITE CORE

RED

MAGNETIC

CONTACTOR

R

(1/L1)

(3/L2)

(2/T1)

(4/T2)

U

CAPACITOR

S

R

C OMP R ES S O R

CN23

1

3

2

Serial Signal

circuit

TRANSFORMER

2

1

i

3

GRN&YEL

GRN&YEL

i

CHASSIS

BLK
BLK

RED
RED

BLK
BLK
WHI
RED
GRY

GRY

BRW

YEL

1

2

4

3

1

2

66554

3

145 C

TEMP FUSE

MAIN P.C. BOARD (MCC-890)

1

1
2

3

3

1

1

3

3

1

1

3

3

5

5
7

7

9

9

CN06

CN05

SG01

250VAC T6. 3A

CN01

F01

TNR
R74

TNR
R73

CN07

CN08

DISCHARGE
PIPE
SENSOR (TD)

BLU

1

1
2
3

3

BLU

BLK

1

1
2
3

3

BLK

HEAT
EXCHANGER
SENSOR (TE)

RY07

BLU

1

S

T

A1

(5/L3)

52C

(6/T3)

BLK

A2

W

COIL FOR
4 WAY VALVE

CAPACITOR

RED

WHI
RED

BLK BLK

V

C

YEL

BLU

BLU

313

11
33

CN11

CN02

CR11

CR12

CR13

CN03

1
1

RY05

RY06

3

FA N MO TO R

−15 −

3-5.42HNR024-713 / 38HNR024-713

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

P04BLK

CN30
CN31

DSA

Varistor

F01

250V6.3A

MAIN P.C. BOARD
(WP-003)

Louver
motor

BLU

PNK

6

5 223311
5

6

FILE NO. SVM-05010-1

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

BLU

BLU

BLU

5 64

321

CN25

10

9871 2 3

WHI

BLU

BLU

BLU

98

7

CN13

10

8 9

7

+12 VDC

+5 VDC

WP-003

C

S

R

COMPRESSOR TERMINAL

220 − 240V ~ 50 Hz

L

BLK

RED

BLK

RED

WHI
PNK

i

N

FERRITE CORE

RED

MAGNETIC

CONTACTOR

R

S

(1/L1)

(3/L2)

(2/T1)

(4/T2)

U

V

CAPACITOR

S

C

R

COMPRESSOR

BLK

1

1

GRN&YEL

T

(5/L3)
(6/T3)

W

A1

52C

A2

2

2

CN23

RED

RED

3

3

WHI

GRN&YEL

i

CHASSIS

CAPACITOR

FAN MOTOR

Serial Signal

circuit

TRANSFORMER

COIL FOR
4 WAY VALVE

BLK
BLK

RED
RED

BLK
BLK
WHI
RED
GRY

BLU

YEL

BLU

BLU

GRY

BRW

YEL

1
1

145 C

TEMP FUSE

1

1
2

CN06

3

3

1

1

CN05

3

3

1

1

3

3

5

5

CN01

7

7

9

9

1

CN11

313

11

CN02

33

BLK BLK

2

4

3

2

66554

3

MAIN P.C. BOARD (MCC-890)

TNR

SG01

R74

F01

250VAC T6. 3A

TNR
R73

RY07

CR11

RY05

CR12

CR13

CN03

3

1
1

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)

−16 −

FILE NO. SVM-05010

4. SPECIFICATION OF ELECTRICAL PARTS

4-1. Indoor Unit (42CJR024-723, 42CJR018-723, 42TAR024X-723, 42TAR018-723)

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

4-2. Indoor Unit (42HNR024-713, 42HNR018-713)

No. Parts name Type Specifications

1 Fan motor (for indoor) AFS-220-31A AC 200 V, 31 W
2 Thermo sensor (TA-sensor) ——— 10 kΩ at 25°C
3 Micro Power Model (M01) µ RW1260 V DC 390 V, Secondary DC 12 V
4 Microcontroller TMP87CM40AN
5 Heat exchanger sensor

(TC-sensor)
6 Line filter (L01) LC*SS11V-06270 27 mH, 600mA
7 Diode (DB01) D3SBA60 4 A, 600 V
8 Capacitor (C63) KMN400VSSN47M22S 4.74µF, 400 V
9 Fuse (F01) BET6.3A T6.3A, 250 V

10 Varistor (R21, R22) 15G561K 560 V
11 Resistor (R319) RF-2TK5R6 5.6 Ω, 2 W

12 Louver motor MP35EA12 Output (Rated) 2 W, 10 poles, 1 phase,

——— 10 kΩ at 25°C

DC 12 V

– 17 –

FILE NO. SVM-05010

4-3. Outdoor Unit (38CJR024-723, 38TAR024X-723)

No. Parts name Type Specifications

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

1 Compressor PH400X3CS-4KT1 Winding resistance (Ω ) C-R C-S

(at 20°C) 1.13 2.10
Output (Rated) 65 W, 6 poles, 1 phase, 220 - 240 V, 50 Hz

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 A35 220 - 240 V, 50 Hz

451355L

BUM44X4505B

AC 450 V, 3.5µ F

AC 440 V, 45

µF

4-4. Outdoor Unit (38CJR018-723)

No. Parts name Type Specifications

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

1 Compressor PH340X3C-4KT1 Winding resistance (Ω) C-R C-S

(at 20°C) 1.46 2.47
Output (Rated) 42 W, 6 poles, 1 phase, 220 – 240 V, 50 Hz

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 CLK-26J 220 – 240 V, 50 Hz

451155L AC 450 V, 1.5µF

BUM44X4505B AC 440 V, 45µF

– 18 –

FILE NO. SVM-05010

4-5. Outdoor Unit (38TAR018-723)

No. Parts name Type Specifications

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

1 Compressor PH290X2C-4FT1 Winding resistance (Ω) C-R C-S

(at 20°C) 1.71 3.09
Output (Rated) 65 W, 6 poles, 1 phase, 220 – 240 V, 50 Hz

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 CLK-26J 220 – 240 V, 50 Hz

451355L AC 440 V, 3.5µF

BUM44X3505A AC 440 V, 45µF

4-6. Outdoor Unit (38HNR024-713)

No. Parts name Type Specifications

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

1 Compressor 2JS386D5BB02 Winding resistance (

(at 20°C) 0.886 1.979
Output (Rated) 65 W, 6 poles, 1 phase, 220 − 240 V, 50 Hz

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 10 kΩ at 25°C / 50 kΩ at 25°C
7 Magnetic contactor A35 220 − 240 V, 50 Hz
8 Transformer TT-05 220 − 240 V
9 Microcontroller TMP47C840N

10 Varistor (R73, R74, R86) 15G471K 470 V
11 Fuse (F01) MT3 T6.3 A, 250 V

451355L AC 450 V, 3.5µF

BUM44X6005C AC 440 V, 60µF

VHV (STF) AC 220 − 240 V

) C-R C-S

Ω

– 19 –

FILE NO. SVM-05010

4-7. Outdoor Unit (38HNR018-713)

No. Parts name Type Specifications

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

1 Compressor 2JS350D5DA02 Winding resistance (Ω) C-R C-S

(at 20°C) 0.981 2.845
Output (Rated) 65 W, 6 poles, 1 phase, 220 − 240 V, 50 Hz

2 Fan motor (for outdoor) KFG6-71SB5P-T3 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 10 kΩ at 25°C / 50 kΩ at 25°C
7 Magnetic contactor CLK-26J 220 − 240 V, 50 Hz, 1P1a
8 Transformer TT-05 220 − 240 V
9 Microcontroller TMP47C840N

10 Varistor (R73, R74, R86) 15G471K 470 V
11 Fuse (F01) MT3 T6.3 A, 250 V

451205L

BUM44X4505B

VHV (STF) AC 220 − 240 V

AC 450 V, 2µF

AC 440 V, 45µF

− 20 −

FILE NO. SVM-05010

5. REFRIGERATION CYCLE DIAGRAM

5-1. 42CJR024-723 / 38CJR024-723, 42TAR024X-723 / 38TAR024X-723

Indoor unit

Cooling

0.39 m
(Connecting pipe)

∅

15.88

O.D.:15.88 mm O.D.:6.35 mm

Cooling

Compressor

P

Packed valve

(∅15.88)

Gas container connection (Reinstall etc.)

PH400X3CS-4KT1

Evaporator

Cross flow fan

T

0.49 m
(Connecting pipe)

∅

6.35

Packed valve

∅

6.35)

(

Capillary tube

∅2.4 x 1500 s

Cooling

Condenser

Propeller fan
Outdoor unit

Mark ( ) means check points of Gas Leak

Dryer

Refrigerant
R22 1.70 kg

Ambient temp.

50 Hz

Standard

pressure

(MPaG)

P

Surface temp. of heat

exchanger interchanging

pipe

T

(°C)

Fan speed

(indoor)

conditions DB/WB

(°C)

Indoor Outdoor

Standard 0.4 11.0 High 27/19 35/24

Cooling High temperature 0.5 12.0 High 32/23 43/26*

Low temperature 0.3 1.0 Low 21/15 21/15

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

– 21 –

5-2. 42HNR024-713 / 38HNR024-713

FILE NO. SVM-05010

Indoor unit

Cooling

0.39 m
(Connecting pipe)

∅

15.88

O.D.:15.88 mm O.D.:6.35 mm

Cooling

Heating

Heating

P

Packed valve

(∅15.88)

Gas container connection (Reinstall etc.)

Heating

4-way valve

Cooling

Compressor

2JS386D5BB02

Accumulator

Condenser

Evaporator

Cross flow fan

T

Capillary tube

∅

1.0 x 700 s

Dryer

Packed valve

∅

6.35)

(

Capillary tube

∅2.0 x 1000 s

0.49 m
(Connecting pipe)

∅

6.35

Refrigerant
R22 1.

75 kg

Cooling
Heating

Propeller fan
Outdoor unit

Mark ( ) means check points of Gas Leak

Ambient temp.

50 Hz

Standard

pressure

(MPaG)

P

Surface temp. of heat

exchanger interchanging

pipe

T

(°C)

Fan speed

(indoor)

conditions DB/WB

(°C)

Indoor Outdoor

Standard 1.7 43.0 High 20/– 7/6

Heating High temperature 2.3 ~ 2.4 52.0 ~ 59.0 Low 27/– 24/18

Low temperature*1 1.2 36.0 High 20/– –10/–10
Standard 0.4 11.0 High 27/19 35/24

Cooling High temperature 0.6 12.0 High 32/23 43/26

Low temperature 0.3 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, the high temperature limit control operation is included.

– 22 –

5-3. 42CJR018-723 / 38CJR018-723

FILE NO. SVM-05010

Indoor unit

Evaporator

(Connecting pipe)

0.39 m
∅12.7

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

Compressor

P

Packed valve

(∅12.7)

Accumulator

PH340X3C-4KT1

Cross flow fan

Condenser

Propeller fan

T

0.49 m
(Connecting pipe)
∅6.35

Packed valve

(∅6.35)

Capillary tube

∅2.0 x 1400 s

Refrigerant
R22 1.17 kg

Outdoor unit

Mark ( ) means check points of Gas Leak

Ambient temp.

Surface temp. of heat

exchanger interchanging

pipe

T

(°C)

Fan speed

(indoor)

conditions DB/WB

(°C)

Indoor Outdoor

50 Hz

Standard

pressure

(MPaG)

P

Standard 0.4 11.0 High 27/19 35/24

Cooling High temperature 0.5 13.0 High 32/23 43/26

Low temperature 0.3 2.0 Low 21/15 21/15

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

– 23 –

5-4. 42TAR018-723 / 38TAR018-723

FILE NO. SVM-05010

Indoor unit

Evaporator

(Connecting pipe)

0.39 m

∅15.88

O.D.:15.88 mm O.D.:6.35 mm

Compressor

P

Packed valve

(∅15.88)

Accumulator

PH290X2C-4FT1

Cross flow fan

Condenser

Propeller fan

T

0.49 m
(Connecting pipe)
∅6.35

Packed valve

(∅6.35)

Capillary tube

∅2.0 x 800 s

Refrigerant
R22 1.47 kg

Outdoor unit

Mark ( ) means check points of Gas Leak

Ambient temp.

Surface temp. of heat

exchanger interchanging

pipe

T

(°C)

Fan speed

(indoor)

conditions DB/WB

(°C)

Indoor Outdoor

50 Hz

Standard

pressure

(MPaG)

P

Standard 0.5 10.0 High 27/19 35/24

Cooling High temperature 0.6 12.0 High 32/23 43/26

Low temperature 0.3 2.0 Low 21/15 21/15

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

– 24 –

5-5. 42HNR018-713 / 38HNR018-713

FILE NO. SVM-05010

Indoor unit

Cooling

0.39 m
(Connecting pipe)

∅

12.7

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

Cooling

Heating

Heating

P

Packed valve

(∅12.7)

Gas container connection (Reinstall etc.)

Heating

4-way valve

Cooling

Compressor

2JS350D5A02

Accumulator

Evaporator

Cross flow fan

T

Capillary tube

∅0.8 x 400 s

Packed valve

(

∅

6.35)

Capillary tube

2.0

600 s

∅

x

0.49 m
(Connecting pipe)

∅

6.35

Cooling
Heating

Condenser

Propeller fan

Outdoor unit

Mark ( ) means check points of Gas Leak

Dryer

Refrigerant
R22 1.17 kg

Ambient temp.

50 Hz

Standard

pressure

(MPaG)

P

Surface temp. of heat

exchanger interchanging

pipe

T

(°C)

Fan speed

(indoor)

conditions DB/WB

(°C)

Indoor Outdoor

Standard 1.7 45.0 High 20/– 7/6

Heating High temperature*1 2.1 ~ 2.3 49.0 ~ 58.0 Low 27/– 24/18

Low temperature 1.2 34.0 High 20/––10/–10
Standard 0.4 10.0 High 27/19 35/24

Cooling High temperature 0.5 15.0 High 32/23 43/26

Low temperature 0.3 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, the high temperature limit control operation is included.

– 25–

6. CONTROL BLOCK DIAGRAM

6.1 42CJR024-723, 42CJR018-723, 42TAR024X-723, 42TAR018-723

Indoor Unit Control Panel

M.C.U.

Heat Exchanger Sensor

Functions

• Louver Control

FILE NO. SVM-05010

Operation

Display

Temperature Sensor

Infrared Rays Signal Receiver

Initiallizing Circuit

Infrared

Rays

Remote

Control

From Outdoor Unit
220 ~ 240 V~, 50 Hz

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

AUTO FAN

Sign Display

Indoor

Fan Motor

Louver Motor

REMOTE CONTROL

Infrared Rays

Remote Control

Operation (START/STOP)

Operation Mode Selection

AUTO, COOL, DRY, AUTO FAN

Temperature Setting
Fan Speed Selection

ON TIMER Setting

OFF TIMER Setting

Louver Auto Swing

Louver Direction Setting

ECO

– 26–

6.2 42HNR024-713, 42HNR018-713

Indoor Unit Control Panel

Heat Exchanger Sensor

Functions

• Louver Control

FILE NO. SVM-05010

M.C.U.

Operation

Display

Temperature Sensor

Infrared Rays Signal Receiver

Initiallizing Circuit

Infrared

Rays

Remote

Control

From Outdoor Unit
220 ~ 240 V~, 50 Hz

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

PRE DEF

Sign Display

Indoor

Fan Motor

Louver Motor

REMOTE CONTROL

Infrared Rays

Remote Control

Operation (START/STOP)
Operation Mode Selection

AUTO, COOL, DRY, HEAT

Temperature Setting
Fan Speed Selection

ON TIMER Setting

OFF TIMER Setting

Louver Auto Swing

Louver Direction Setting

ECO

– 27 –

7. OPERATION DESCRIPTION

FILE NO. SVM-05010

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

• 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

OPERATION

MODE

42HNR024-713

42HNR018-713
42CJR024-723

Model

42TAR024X-723
42CJR018-723

42TAR018-723

Operations according

to the commands
from the indoor unit

Table 7-1-1

Cooling UH H M+
Heat
Fan only
Dry
rpm
Air flow volume (m3/h)

rpm
Air flow volume (m3/h)

rpm
Air flow volume (m3/h)

rpm
Air flow volume (m3/h)

rpm
Air flow volume (m3/h)

UH H

1300

1200

790 750

1250

−

−

−

−

−

−

873

• 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 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 (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

FAN TAP

1150

1300

873
1150
750

1300

873

H

M+ M
M+

1250

830 790

830

1100

708

1250

830

M

M

1200

1100

708

−

−

−

−

−

−

L

M

1150 1050

750

1050

667

1150

750

1050

667

1050

667

667
950
584

−

−

−

−

−

−

L

L+
L­L+

L
L

L+

1000

625

900

543

1050

1000

625

667
950

900
543

584

900

950

584

543

UL

L- SUL/SL-

LL+

U

L­L- UL SUL

700

800

900

380

461 300

543

700

800

461

900

543
800
461

800
461

800

600

300

380 220

700

461

380

700

600

380

300

700

600
300

380

SUL/SL-

+

600

500

−

−

−

−

−

−

− 28 −

FILE NO. SVM-05010

7-2. Description of Operation Circuit

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

blinks. This means that the power is on (or the
power supply is cut off.)

(2) When pressing [ ] button on the

remote control, receiving beep sounds from the
indoor unit, and the next operation is performed
together with opening the vertical air flow louver.

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

the microcomputer so that the previous operation
can be effected thereafter simply by pressing
[ ] button.

7-2-1. Fan only operation

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

(1) When [FAN] button is set to AUTO, the indoor fan

motor operates as shown in Fig. 7-2-1. When
[FAN] button is set to LOW, LOW+, MED, MED+ or
HIGH, the motor operates with a constant air flow.

°C

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.

°C

ON ON

OFF OFF OFF ON

4-way valve

Compressor

Outdoor fan

(Room temp.) (Preset temp.)

Preset
temp.

0.5

0

Fig. 7-2-2

display lamp

OPERATION

+3
+2.5
+2

+1.5
+1
+0.5

(Room temp.) − (Preset 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.

°C

(Room temp.) − (Preset 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]

− 29 −

FILE NO. SVM-05010

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.

°C

ON:6min.

OFF:4min.

ON

ON:5min.

OFF:5min.

OFF

4-way valve

Outdoor fan

(Room temp.) (Preset temp.)

Preset
temp.

+3

+2

+1

ON:6min.

OFF:4min.

OFF

ON:5min.

OFF:5min.

OFF

0

Compressor

Fig. 7-2-4

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

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

Preset
temp.

display lamp

OPERATION

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

operation display lamp are controlled as shown in
Fig. 7-2-6.

°C

0

ON

OFF

0.5

ON

(Room temp.) (Preset temp.)

OFF

ON

4-way valve

Compressor

Outdoor fan

ON

display lamp

OPERATION

Fig. 7-2-6

(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.

R oom 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.

°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 ECO and Hi Power operations can not be set.

– 30 –

FILE NO. SVM-05010

(3) The indoor heat exchanger restricts revolving

speed of the fan motor to prevent a cold draft. The
upper limit of the revolving speed is shown in
Fig. 7-2-8 and Table 7-2-1.

Manual
(One of

AUTO

*4

SUL*
SUL*1

Stop

5 speed)

L-H
(Up to
setting

3

speed)

*2

A+4 A+4

464534

33

33 21
32 20

A-8 A-8

*6 *5

NOTES :

*1: The fan stops for 2 minutes after thermostat-OFF.
*2: A is 24°C when the preset temperature is 24°C or

more and A is the preset temperature when it is

under 24°C.
*3: SUL means Super Ultra Low.
*4: Calculated from difference in motor speed

between SUL and HIGH.

7-2-5. Automatic operation

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

(1) One of 3 operations (Cooling, Fan only or Heating)

is selected according to difference between the
preset temperature and the room temperature at
which the automatic operation has started, as
shown in Fig. 7-2-9. The Fan only operation
continues until the room temperature reaches a
level at which another mode is selected.

(2) Temporary Auto

When the TEMPORARY button on the indoor unit
is pushed, the preset temperature is fixed at 24°C
and the indoor unit is controlled as shown in
Fig. 7-2-9.

°C

Cooling operation

The louver moves to the position same
as Hi POWER operation.

+4

Cooling operation

0

Fan only operation

-1

Fig. 7-2-8 Cold draft preventing control

*5 and *6:

Table 7-2-1

Fan *5 *6
speed Starting period Stabilized period

AUTO • Up until 12 minutes

passed after starting
the unit

• From 12 to 25 minutes
passed after starting
the unit and room
temperature is 3°C
lower than preset
temperature

Manual • Room temperature
(L – H) < Preset temperature

• From 12 to 25 minutes
passed after starting
the unit and room
temperature is
between preset
temperature and 3°C
lower than preset
temperature

• 25 minutes or more
passed after starting
the unit

• Room temperature

Preset temperature

–4°C

–3.5°C

Heating operation

42HNR024-713

(Room temp.) − (Preset temp.)

42HNR018-713

42CJR024-713, 42TAR024X-723
42CJR018-713, 42TAR018-723

Fig. 7-2-9

– 31 −

60

55
52

Compressor

Outdoor fan

OFF

OFF

ON

ON

OFF

ON

Heat exchanger
temp.
(°C)

FILE NO. SVM-05010

7-3. High-Temperature Limit Control

*Heat pump model only

The microcontroller detects the indoor heat exchanger
temperature to prevent pressure of a refrigerating cycle
from increasing excessively.
The compressor and outdoor fan motor are controlled
as shown in Fig. 7-4-1.

Fig. 7-3

-1

7-4. Low-Temperature Limit Control

The microcontroller detects the indoor heat exchanger
temperature to prevent the indoor heat exchanger from
freezing.
The compressor and outdoor fan motor are controlled
as shown in Fig. 7-5-1.

Heat exchanger
temperature

(°C)

6

2

Compressor Outdoor fan

ON

Less than continues

for 5 minutes

OFF

7-5-1. Defrost starting condition

A-Zone : If -10°C > Teo ≥ − 18°C, defrost will

start when.
Teo - Te ≥ 2.5°C at teat 20 sec or

~ 30 min after operation.

B-Zone : If Te ≤ −18°C, defrost start instantaneously

(Suddenly) 00 ~ 25 min ofter operation

C-Zone : If -2ºC ≥ Teo ≥ −10°C defrost will start when

Teo - Te ≤ −3°C at least 20 sec or ~ 60 min
after operation.

7-5-2. Defrost finish condition.

1) If Te ≥ 3°C at least 60 sec -->4 way value on.

2) If Te ≥ 8°C --> 4 way value on.

Timing

Operation time (4 Loops = Tt)

Td1

Td2

Td3 Td4

Fig. 7-4

-1

7-5. Defrost Operation *Heat pump model only

When the indoor unit is in heating operation, if the
refrigerant evaporation temperature detected by the
outdoor heat exchanger sensor is under the specified
temperature, the outdoor unit starts the defrosting
operation. At this time, the 4-way valve relay and the
outdoor fan motor are turned off. The indoor fan motor
is also turned off by the cold draft preventing control of
the indoor microcomputer. Then, [PRE. DEF.] lamp on
the indoor unit comes on.
The defrosting operation stops and the 4-way valve
relay, outdoor fan motor and the indoor fan motor are
turned on automatically when the refrigerant
evaporation increases to the specified temperature, or
when the defrosting time is over 12 minutes.

-

32

Finish time recordStart time record

Defrost time rate : (Td/Tt) x 100
Heating time rate : (Tt - Td) x Tt

Fig. 7-5-2

-

FILE NO. SVM-05010

7-6. Auto Restart Function

The indoor unit is equipped with an automatic
restarting function which allows the unit to restart
operating with the set operating conditions in the event
of power supply being accidentally shut down. The
operation will resume without warning three minutes
after power is restored.
This function is not set to work when shipped from the
factory. Therefore it is necessary to set it to work.

7-6-1. How to set auto restart function

To set the auto restart function, proceed as follows:
The power supply to the unit must be on; the function
will not set if the power is off.
Push the [TEMPORARY] button located in the center
of the front panel continuously for three seconds.
The unit receives the signal and beeps three times.
The unit then restarts operating automatically in the
event of power supply being accidentally shut down.

When the unit is on standby (Not operating)

Operation Motions

Push [TEMPORARY] button for more The unit is on standby.
than three seconds.

The unit starts to operate. The green lamp is on.

0

3S

The unit beeps three times The lamp changes from

→

→

and continues to operate. green to orange.

TEMPORARY button

If the unit is not required to operate at this time, push [TEMPORARY]
button once more or use the remote control to turn it off.

After approx. three seconds,

When the unit is in operation

Operation Motions

Push [TEMPORARY] button for more The unit is in operation. The green lamp is on.
than three seconds.

The unit stops operating. The green lamp is turned off.

→

→

After approx. three seconds,

0

3S

TEMPORARY button

• While this function is being set, if the unit is in
operation, the orange lamp is on.

• This function can not be set if the timer operation

The unit beeps three times.
If the unit is required to operate at this time, push [TEMPORARY]

button once more or use the remote control to turn it on.

• While the filter check lamp is on, the
[TEMPORARY] button has the function of filter
reset button.

has been selected.

• When the unit is turned on by this function, the
louver will not swing even though it was swinging
automatically before shutting down.

– 33 –

7-6-2. How to cancel auto restart function

To cancel auto restart function, proceed as follows:
Repeat the setting prodedure: the unit receives the
signal and beeps three times.
The unit will be required to be turned on with the
remote control after the main power supply is turned
off.

When the unit is on standby (Not operating)

Operation Motions

Push [TEMPORARY] button for more The unit is on standby.
than three seconds.

→

FILE NO. SVM-05010

The unit starts to operate. The orange lamp is on.

→

After approx. three seconds,

0

3S

The unit beeps three times The lamp changes from
and continues to operate. orange to green.

TEMPORARY button

If the unit is not required to operate at this time, push [TEMPORARY]
button once more or use the remote control to turn it off.

When the unit is in operation

Operation Motions

Push [TEMPORARY] button for more The unit is in operation. The orange lamp is on.
than three seconds.

The unit stops operating. The orange lamp is turned off.

→

→

After approx. three seconds,

0

3S

TEMPORARY button

• While this function is being set, if the unit is in

The unit beeps three times.
If the unit is required to operate at this time, push [TEMPORARY]

button once more or use the remote control to turn it on.

7-7. Filter Check Lamp

operation, the orange lamp is on.

When the elapsed time reaches 1000 hours, the filter

7-6-3. Power failure during timer operation

check lamp indicates. After cleaning the filters, turn off
the filter check lamp.

When the unit is in Timer operation, if it is turned off
because of power failure, the timer operation is

7-7-1. How to turn off filter check lamp

cancelled. Therefore, set the timer operation again.

Press [FILTER] button on the remote control.
OR push [TEMPORARY] button on the indoor unit.

Note:

If [TEMPORARY] button is pushed while the filter
check lamp is not indicating, the indoor unit will start
the Automatic Operation.

– 34 –

FILE NO. SVM-05010

8. INSTALLATION PROCEDURE

8-1. Safety Cautions

For general public use

Power supply cord of Outdoor unit shall be more than 4 mm2 (H07RN-F or 245 IEC66 : polychloroprene
sheathed flexible cord) or 3.5 mm2 (AWG-12).

CAUTION

This appliance must be connected to the main power supply by means of a circuit breaker or a switch with a
contact separation of at least 3 mm.
If this is not possible, a power supply plug with earth must be used. This plug must be easily accessible after
installation. The plug must be disconnected from the power supply socket in order to disconnect the
appliance completely from the mains.

To Disconnect the Appliance from the Main Power Supply

DANGER

• FOR USE BY QUALIFIED PERSONS ONLY.

• TURN OFF MAIN POWER SUPPLY BEFORE ATTEMPTING ANY ELECTRICAL WORK. MAKE SURE

ALL POWER SWITCHES ARE OFF. FAILURE TO DO SO MAY CAUSE ELECTRIC SHOCK.

• CONNECT THE CONNECTING CABLE CORRECTLY. IF THE CONNECTING CABLE IS CONNECTED
WRONGLY, ELECTRIC PARTS MAY BE DAMAGED.

• CHECK THE EARTH WIRE THAT IT IS NOT BROKEN OR DISCONNECTED BEFORE INSTALLATION.

• DO NOT INSTALL NEAR CONCENTRATIONS OF COMBUSTIBLE GAS OR GAS VAPORS.

FAILURE TO FOLLOW THIS INSTRUCTION CAN RESULT IN FIRE OR EXPLOSION.

• TO PREVENT OVERHEATING THE INDOOR UNIT AND CAUSING A FIRE HAZARD, PLACE THE UNIT
WELL AWAY (MORE THAN 2 M) FROM HEAT SOURCES SUCH AS RADIATORS, HEATORS,
FURNACE, STOVES, ETC.

• WHEN MOVING THE AIR-CONDITIONER FOR INSTALLING IT IN ANOTHER PLACE AGAIN, BE VERY
CAREFUL NOT TO GET THE SPECIFIED REFRIGERANT (R22) WITH ANY OTHER GASEOUS BODY
INTO THE REFRIGERATION CYCLE. IF AIR OR ANY OTHER GAS IS MIXED IN THE REFRIGERANT,
THE GAS PRESSURE IN THE REFRIGERATION CYCLE BECOMES ABNORMALLY HIGH AND IT
RESULTINGLY CAUSES BURST OF THE PIPE AND INJURIES ON PERSONS.

• IN THE EVENT THAT THE REFRIGERANT GAS LEAKS OUT OF THE PIPE DURING THE
INSTALLATION WORK, IMMEDIATELY LET FRESH AIR INTO THE ROOM. IF THE REFRIGERANT GAS
IS HEATED BY FIRE OR SOMETHING ELSE, IT CAUSES GENERATION OF POISONOUS GAS.

WARNING

• Never modify this unit by removing any of the safety guards or bypassing any of the safety interlock
switches.

• Do not install in a place which cannot bear the weight of the unit.
Personal injury and property damage can result if the unit falls.

• Before doing the electrical work, attach an approved plug to the power supply cord.
Also, make sure the equipment is properly earthed.

• Appliance shall be installed in accordance with national wiring regulations.
If you detect any damage, do not install the unit. Contact your TOSHIBA dealer immediately.

CAUTION

• Exposure of unit to water or other moisture before installation could result in electric shock.
Do not store it in a wet basement or expose to rain or water.

• After unpacking the unit, examine it carefully for possible damage.

• Do not install in a place that can increase the vibration of the unit. Do not install in a place that can amplify

the noise level of the unit or where noise and discharged air might disturb neighbors.

• To avoid personal injury, be careful when handling parts with sharp edges.

• Please read this installation manual carefully before installing the unit. It contains further important

instructions for proper installation.

– 35–

FILE NO. SVM-05010

REQUIREMENT OF REPORT TO THE LOCAL POWER SUPPLIER

Please make absolutely sure that the installation of this appliance is reported to the local power supplier
before installation. If you experience any problems, or if the installation is not accepted by the supplier, the
service agency will take adequate countermeasures.

– 36 –

FILE NO. SVM-05010

8-2. Installation Diagram of Indoor and Outdoor Units

For installation of the indoor unit, use the paper pattern

on the back of the installation manual.

Hook

170 mm

or more

A

ir

filte

r

(Attach to the front panel) (Attach to the air filter)

6 Nano-silver filter

5 Nano-Photo filter

8

Pan head wood screw

65 mm or more

Hook

1 Installation

plate

170 mm

or more

Shield pipe

For the rear left and left
piping

Wall

Insert the cushion between
the indoor unit and wall, and
lift the indoor unit for better
operation.

Do not allow the drain hose
to get slack.

Cut the piping
hole sloped
slightly

Make sure to run the drain
hose sloped downward.

Before installing the
wireless remote control

• With the remote control cover
open, load the batteries supplied
correctly, observing their
polarity.

2 Wireless remote control

3 Batteries

m

0

0

1

m

r

o

1

0

0

m

m

o

r m

o

re

m

r

o

m

m

0

0

6

r

o

600 mm or more

e

m

e

r

o

2 Wireless remote control

Extension
drain hose
(Not available,
provided by
installer)

Electric
parts cover

6

0

0

m

o

m

r m

o

re

6

0

0

o

r m

The auxiliary piping can be
connected the left, rear left,
rear, right or bottom.

4 Remote control holder

Right

Rear

Insulate the refrigerant
pipes separately with
insulation, not together.

Vinyl tape
Apply after carrying
out a drainage test.

Saddle

Extension
drain hose

ore

100 mm

1

0

0

m

m

o

r m

o

re

m

r

o

m

o

m

m

0

m

0

6

re

re

o

600 mm or more

or m

(Not available,
provided by
installer)

Electric
parts cover

6

0

0

m

o

m

r m

o

re

Rear left

Bottom

6 mm thick heat resisting
polyethylene foam

Left

18 Class Heat pump 24 Class

Loop the connecting cable (about 100 mm
in diameter and 300 - 350 mm long).

18 Class Cooling

Loop the connecting cable (about 100 mm
in diameter and 300 - 350 mm long).

– 37 –

8-3.Installation

8-3-1. Optional installation parts

FILE NO. SVM-05010

Part

Code

Parts name

Refrigerant piping
Liquid side : ∅6.35 mm
Gas side : ∅12.70 mm (42CJR018)

A

Gas side : ∅15.88 mm (42CJR024,

42TA024, 42TA018)

Pipe insulating material

B

(polyethylene foam, 6 mm thick)
Putty, PVC tapes

C

<Fixing bolt arrangement of outdoor unit>

38HNR018-713

600 mm

Air inlet

120 mm

52 mm

325 mm

Q'ty

One

each

1

One

each

Air outlet

Fig. 8-3-1

38CJR024-723, 38TAR024X-723, 38TAR018-723, 38HNR024-713

600 mm

Air inlet

120 mm

64 mm

340 mm

Air outlet

32.5 mm

310 mm

7 mm

38CJR018-723

30



73 mm

Air outlet

600 mm

125 mm115 mm

Air inlet

102 mm

90 mm

Drain outlet

Fig. 8-3-3

Fig. 8-3-2

• Secure the outdoor unit with the fixing bolts and nuts if the unit is likely to be exposed to a strong wind.

• Use ∅8 mm or ∅10 mm anchor bolts and nuts.

– 38–

8-3-2. Accessory and installation parts

FILE NO. SVM-05010

Part

No.

Part name (Q'ty)

1

Installation plate x 1

2

Wireless remote control x 1

3

Battery x 2

Others

Owner’s manual

Installation manual

Name

Part

No.

Part name (Q'ty)

4

Remote control holder x 1

5

Nano silver filter x 2

6

Nano Photo filter x 2

Part

No.

Part name (Q'ty)

7

Mounting screw ∅ 4 x 25 x 8

8

Pan head wood screw

∅ 3.1 x 16 x 2

l

l



.

– 39 –

FILE NO. SVM-05010

8-4.Indoor Unit

8-4-1. Installation place

• A place which provides the spaces around the
indoor unit as shown in the above diagram.

• A place where there is no obstacle near the air inlet
and outlet.

• A place that allows easy installation of the piping to
the outdoor unit.

• A place which allows the front panel to be opened.

CAUTION

• Direct sunlight to the indoor unit's wireless

receiver should be avoided.

• The microprocessor in the indoor unit should not

be too close to RF noise sources.
(For details, see the owner’s manual.)

<Remote control>

• A place where there are no obstacles such as a
curtain that may block the signal from the indoor
unit.

• Do not install the remote control in a place exposed
to direct sunlight or close to a heating source, such
as a stove.

• Keep the remote control at least 1 m apart from the
nearest TV set or stereo equipment. (This is
necessary to prevent image disturbances or noise
interference.)

• The location of the remote control should be
determined as shown below.

Remote
control

(Top view)

Indoor unit

Reception
range

* : Axial distance

Fig. 8-4-1

°

45

°

5 m

Remote control

m

5

45

Indoor unit

(Side view)

7 m

°

5

7

Reception
range

8-4-2. Cutting a hole and mounting installation

plate

<Cutting a hole>

When installing the refrigerant pipes from the rear.

Pipe hole

6

5

m

m

The center of the pipe
hole is above the arrow.

100 mm

Fig. 8-4-2

1. After determining the pipe hole position on the
mounting plate (100 mm A), drill the pipe hole (∅
65 mm) at a slight downward slant to the outdoor
side.

NOTE:

• When drilling a wall that contains a metal lath, wire
lath or metal plate, be sure to use a pipe hole brim
ring sold separately.

<Mounting the installation plate>

For installation of the indoor unit, use the paper pattern
on the back.

Pipe hole

65

Installation
plate

* 7 m

170

120

Pipe hole

Hook

Indoor unit

Hook

Thread

Weight

55

Hook

7 Mounting screw

1

– 40 –

Fig. 8-4-3

FILE NO. SVM-05010

<When the installation plate is directly mounted on
the wall>

1. Securely fit the installation plate onto the wall by
screwing it in the upper and lower parts to hook up
the indoor unit.

2. To mount the installation plate on a concrete wall
with anchor bolts, utilize the anchor bolt holes as
illustrated in the above figure.

3. Install the installation plate horizontally in the wall.

CAUTION

When installing the installation plate with a
mounting screw, do not use the anchor bolt hole.
Otherwise the unit may fall down and result in
personal injury and property damage.

Installation plate
<Keep horizontal direction>

Anchor
bolt

Projection

5 mm dia. hole

15 mm or less

8-4-3. Electrical work

1. The supply voltage must be the same as the rated
voltage of the air conditioner.

2. Prepare the power source for exclusive use with the
air conditioner.

NOTE:

2

• Wire type : More than 1.5 mm

2

IEC66) or 1.3 mm

(AWG-16)

(H07RN-F or 245

CAUTION

• This appliance can be connected to the mains in
the following way.
Connection to fixed wiring :
A switch or circuit breaker which disconnects all
poles and has a contact separation of at least
3 mm must be incorporate in the fixed wiring. An
approved circuit breaker or switches must used.

NOTE:

• Perform wiring works so as to allow a generous
wiring capacity.

7 Mounting

screw

ss

∅4 x 25

s

ss

Clip anchor
(local parts)

Fig. 8-4-4

CAUTION

Failure to firmly install the unit may result in
personal injury and property damage if the unit falls.

• In case of block, brick, concrete or similar type
walls, make 5 mm dia. holes in the wall.

• Insert clip anchors for appropriate mounting screws

7 .

NOTE:

• Secure four corners and lower parts of the
installation plate with 6 to 8 mounting screws to
install it.

– 41–

FILE NO. SVM-05010

8-4-4. Wiring connection

Air Inlet grille

2

1

Terminal block

Cord clamp

Terminal
cover

Screw

Screw

Front panel

Earth
line

CAUTION

• Be sure to refer to the wiring system diagram
labeled inside the front panel.

• Check local electrical cords and also any specific
wiring instructions or limitations.

Connecting cable

a

b

o

u

t 1

5

c

m

Fig. 8-4-6

<Stripping length of the connecting cable>

10

10

40

50

Connecting cable

Fig. 8-4-5

<How to connect the connecting cable>
Wiring of the connecting cable can be carried out

without removing the front panel.

1. Remove the air inlet grille.
Open the air inlet grille upward and pull it toward
you.

2. Remove the terminal cover and cord clamp.

3. Insert the connecting cable (according to the local
cords) into the pipe hole on the wall.

4. Take out the connecting cable through the cable
slot on the rear panel so that it protrudes about
15 cm from the front.

5. Insert the connecting cable fully into the terminal
block and secure it tightly with screws.

6. Tightening torque : 1.2 N·m (0.12 kgf·m).

7. Secure the connecting cable with the cord clamp.

8. Fix the terminal cover, rear plate bushing and air
inlet grille on the indoor unit.

Earth line

Fig. 8-4-7

NOTE:

Use stranded wire only.

• Wire type: More than 1.5 mm2 (H07RN-F or
245 IEC66) or 1.3 mm2 (AWG-16)

Fig. 8-4-8

NOTE:

Connect the earth line to the metallic part (i mark)
located at the side of 3P terminal.

<How to install the air inlet grille on the indoor unit>

• When attaching the air inlet grille, the contrary of

the removed operation is performed.

Fig. 8-4-9

– 42 –

FILE NO. SVM-05010

8-4-5. Piping and drain hose installation
<In case of rightward piping>

• After scribing slits of the body-right by a knife or a
making-off pin, cut them by a pair of nippers or the
like.

Slit (Body-right)

Fig. 8-4-10

<In case of downward piping>

• After scribing slits of the body-right by a knife or a
making-off pin, cut them by a pair of nippers or the
like.

To connect the pipe after installation of the unit (figure)

(To the forefront of flare)

400 mm

300 mm

R 30 mm (Use polisin (polyethylene)

43 mm

core or the like for bending pipe.)

0

8

Liquid side

Gas side

Outward form of indoor unit

Use the handle of screwdriver, etc.

Fig. 8-4-12

NOTE:

If the pipe is bent incorrectly, the indoor unit may
unstably be set on the wall.
After passing the connecting pipe through the pipe
hole, connect the connecting pipe to the auxiliary pipes
and wrap the facing tape around them.

CAUTION

Slit (Body-right)

Fig. 8-4-11

<Left-hand connection with piping>

Bend the connecting pipe so that it is laid within 43 mm
above the wall surface. If the connecting pipe is laid
exceeding 43 mm above the wall surface, the indoor
unit may unstably be set on the wall. When bending the
connecting pipe, make sure to use a spring bender so
as not to crush the pipe.

Bend the connection pipe within a radius of 30 mm.

• Bind the auxiliary pipes (two) and connecting
cable with facing tape tightly. In case of leftward
piping and rear-leftward piping, bind the auxiliary
pipes (two) only with facing tape.

Indoor unit

Auxiliary pipes

Installation plate

Connecting cable

Drain hose

• Carefully arrange pipes so that any pipe does not
stick out of the rear plate of the indoor unit.

• Carefully connect the auxiliary pipes and
connecting pipes to each other and cut off the
insulating tape wound on the connecting pipe to
avoid double-taping at the joint, moreover, seal
the joint with the vinyl tape, etc.

• Since dewing results in a machine trouble, make
sure to insulate both the connecting pipes. (Use
polyethylene foam as insulating material.)

• When bending a pipe, carefully do it, not to crush it.

– 43 –

FILE NO. SVM-05010

8-4-6. Indoor unit fixing

1. Pass the pipe through the hole in the wall, and hook
the indoor unit on the installation plate at the upper
hooks.

2. Swing the indoor unit to right and left to confirm that
it is firmly hooked up on the installation plate.

3. While pressing the indoor unit onto the wall, hook it
at the lower part on the installation plate. Pull the
indoor unit toward you to confirm that it is firmly
hooked up on the installation plate.

1

2

Hook

Hook here

1 Installation

plate

Press

(unhook)

Fig. 8-4-13

• For detaching the indoor unit from the installation
plate, pull the indoor unit toward you while pushing
its bottom up at the specified parts.

8-4-7. Drainage

1. Run the drain hose sloped downwards.

NOTE:

• Hole should be made at a slight downward slant on
the outdoor side.

Do not form the
Do not rise the
drain hose.

50 mm
or more

Do not put
the drain
hose end
into water.

drain hose into

a wavy shape.

Do not put
the drain
hose end in
the drainage
ditch.

Fig. 8-4-15

2. Put water in the drain pan and make sure that the
water is drained out of doors.

3. When connecting extension drain hose, insulate the
connecting part of extension drain hose with shield
pipe.

Fig. 8-4-14

Shield pipe

Drain hose

PushPush

Inside the room

Fig. 8-4-16

Extension drain hose

CAUTION

Arrange the drain pipe for proper drainage from the
unit.
Improper drainage can result in dew-dropping.

This air conditioner has the structure designed to drain
water collected from dew, which forms on the back of
the indoor unit, to the drain pan.
Therefore, do not store the power cord and other parts
at a height above the drain guide.

Wall

Drain guide

Space for pipes

– 44 –

Fig. 8-4-17

FILE NO. SVM-05010

8-5.Outdoor Unit

8-5-1. Installation place

• A place which provides the spaces around the
outdoor unit as shown in the left diagram.

• A place which can bear the weight of the outdoor
unit and does not allow an increase in noise level
and vibration.

• A place where the operation noise and discharged
air do not disturb your neighbors.

• A place which is not exposed to a strong wind.

• A place free of a leakage of combustible gases.

• A place which does not block a passage.

• When the outdoor unit is to be installed in an

elevated position, be sure to secure its feet.

• An allowable length of the connecting pipe is up
15 m.
(Refer to the table of TO CHARGE REFRIGERANT
for detail.)

• An allowable height level is up to 8 m.
(38CJR018-713, 38TAR018-713, 38HNR018-703) or 10 m.
(38CJR024-713, 38TAR024X-713, 38HNR024-703)

• A place where the drain water does not raise any
problem.

8-5-2. Refrigerant piping connection

1. Cut the pipe with a pipe cutter.

90°

Obliquity

Roughness

Fig. 8-5-2

2. Insert a flare nut into the pipe, and flare the pipe.

• Projection margin in flaring : A (Unit : mm)

A

Die

Pipe

Fig. 8-5-3

Outer dia.

of copper pipe

Rigid Imperial

A

6.35 1.0 to 1.5 1.5 to 2.0

Warp

CAUTION

1. Install the outdoor unit without anything blocking
the air discharging.

2. When the outdoor unit is installed in a place
exposed always exposed to strong wind like a
coast or on a high storey of a building, secure
the normal fan operation using a duct or a wind
shield.

3. In particularly windy areas, install the unit such
as to avoid admission of wind.

4. Installation in the following places may result in
trouble.
Do not install the unit in such places.

• A place full of machine oil.

• A saline-place such as the coast.

• A place full of sulfide gas.

• A place where high-frequency waves are likely

to be generated as from audio equipment,
welders, and medical equipment.

Strong

wind

12.70 1.0 to 1.5 1.5 to 2.5

15.88 1.0 to 1.5 2.0 to 2.5

<Tightening connection>

Align the centers of the connecting pipes and tighten
the flare nut as far as possible with your fingers. Then
tighten the nut with a spanner and torque wrench as
shown in the figure.

CAUTION

• Do not apply excess torque.

• Otherwise, the nut may crack depending on the

conditions.

Fig. 8-5-1

– 45 –

FILE NO. SVM-05010

(Unit : N·m)

Outer dia.

of copper pipe

Tightening torque

∅6.35 mm 16 to 18 (1.6 to 1.8 kgf·m)
∅12.70 mm 50 to 62 (5.0 to 6.2 kgf·m)
∅15.88 mm 65 to 80 (6.5 to 8.0 kgf·m)

• Tightening torque of flare pipe connections

Flare at indoor unit side

Flare at outdoor unit side

Fig. 8-5-4

Flare nutHalf union

Externally
threaded side

Use a wrench to secure.

Use a torque wrench to tighten.

Internally
threaded side

Fig. 8-5-5

CAUTION

• KEEP IMPORTANT 4 POINTS FOR PIPING

WORK

(1) Take away dust and moisture (Inside of the

connecting pipes.)
(2) Tight connection (between pipes and unit)
(3) Evacuate the air in the connecting pipes using

VACUUM PUMP.
(4) Check gas leak (connected points)

8-5-3. Evacuating

After the piping has been connected to the indoor unit,
you can perform the air purge together at once.

AIR PURGE

Evacuate the air in the connecting pipes and in the
indoor unit using a vacuum pump. Do not use the
refrigerant in the outdoor unit. For details, see the
manual of the vacuum pump.

<Using a vacuum pump>

Be sure to use a vacuum pump with counter-flow
prevention function so that inside oil of the pump does
not flow backward into pipes of the air conditioner
when the pump stops.

1. Connect the charge hose from the manifold valve to
the service port of the gas side packed valve.

2. Connect the charge hose to the port of the vacuum
pump.

3. Open fully the low pressure side handle of the
gauge manifold valve.

4. Operate the vacuum pump to start evacuating.
Perform evacuating for about 15 minutes if the
piping length is 20 meters. (15 minutes for
20 meters) (assuming a pump capacity of 27 liters
per minute.) Then confirm that the compound
pressure gauge reading is –101 kPa (–76 cmHg).

5. Close the low pressure side valve handle of gauge
manifold.

6. Open fully the valve stem of the packed valves
(both side of Gas and Liquid).

7. Remove the charging hose from the service port.

8. Securely tighten the caps on the packed valves.

Compound pressure gauge

-101 kPa (-76 cmHg)

Handle Lo

Charge hose

Pressure gauge

Manifold valve

Handle Hi
(Keep full closed)

Charge hose

– 46 –

Connecting pipe

Packed valve at liquid side

Packed valve at gas side

Service port
(Valve core (Setting pin))

Fig. 8-5-7

Vacuum

pump

Vacuum pump
adapter for
counter-flow
prevention

FILE NO. SVM-05010

TO CHARGE REFRIGERANT

Refrigerant

No need to charge

refrigerant
Need to charge Over 15 m up to Over 15 m up to

refrigerant 25 m (20 g/m) 20 m (20 g/m)

18 Class

15 m or less 15 m or less

24 Class

<Packed valve handling precautions>

• Open the valve stem all the way out; but do not try
to open it beyond the stopper.

• Securely tighten the valve stem cap with torque in
the following table:

Gas side Tightening torque A

Gas side 65 to 80 N·m 5 mm
(∅15.88 mm) (6.5 to 8.0 kgf·m)

Gas side 50 to 62 N·m 4 mm
(∅12.70 mm) (5.0 to 6.2 kgf·m)

Liquid side 16 to 18 N·m Same as
(∅6.35 mm) (1.6 to 1.8 kgf·m) Gas side

Service port

9 to 10 N·m
(0.9 to 1.0 kgf·m)

<Stripping length of connection cable>

Terminal block

LN 1 32

Terminal screw

Earth line

Cord clamp

Power supply cord

N

L

10

60

10

70

Earth line

70

Screw

Cord clamp

Connecting cable

123

10

Connecting cablePower supply cord

Fig. 8-5-8

10

80

• Hexagonel wrench : A (Unit : mm)

Hexagonal wrench
is required.

A

Fig. 8-5-7

8-5-4. Wiring connection

1. Remove the electric parts cover from the outdoor
unit.

2. Connect the connecting cable to the terminal as
identified with their respective matched numbers on
the terminal block of indoor and outdoor unit.

3. When connecting the connecting cable to the
outdoor unit terminal, make a loop as shown in the
installation diagram of indoor and outdoor unit, to
prevent water coming in the outdoor unit.

4. Insulate the unused cords (conductors) from any
water coming in the outdoor unit. Proceed them so
that they do not touch any electrical or metal parts.

Model

Power source (For Asia model)

Maximum
running current

Plug socket &
fuse rating

Pow er cord

18 Class

50 Hz, 220 − 240V Single phase

50 Hz, 220V Single phase

(For Thai model)

16A 18A

20A 20A

4 mm2 (H07RN-F or 245 IEC66) or 3.5 mm
(AWG-12)

24 Class

CAUTION

• Wrong wiring connection may cause some
electrical parts burn out.

• Be sure to comply with local codes on running
the wire from indoor unit to outdoor unit (size of
wire and wiring method etc).

• Every wire must be connected firmly.

NOTE: Connecting cable

• Wire type: More than 1.5 mm2 (H07RN-F or
245 IEC66) or 1.3 mm2 (AWG-16)

2

– 47 –

FILE NO. SVM-05010

8-6.How to Set Remote Control Selector

Switch

When two indoor units as installed in seperated rooms,
there is no need to change the selector switch.

<Remote control selector switch>

• When two indoor units are installed in the same
room or the adjacent two rooms, they may be
controlled simultaneously with a single remote
control. To prevent this, set either unit and its
remote control to B setting. (Both units are set to A
setting before shipment.)

• The remote control signal is not recived when the
indoor unit setting is different from the remote
control one.

1. Set the remote control selectors witch with the
indoor unit.

1) Turn the circuit breaker of the main power switch off
before setting the selector switch.

2) Remove the Air inlet grille and Front panel. (Refer to
Chapter 10-1, procedure 1 )

3) Open the Electrical part cover (Refer to chapter
10-1, procedure 2 ), then cut the jumper (J90)
with only the nippers.

2. Set the remote control selector switch with the
remote control

[B] is indicated on the liquid crystal display when
setting remote control selector switch to B. [A] is
not indicated on the display even if the selector
switch is set to A.

1) Load the remote control with the batteries.

2) Press the [CHECK] button using something with
sharp point. (The preset temperature on the remote
control changes to [00].)

3) Press the [MODE] button while pressing the
[CHECK] button, [B] is indicted at the right of the
present temperature display.

• To reset the switch to the [A] setting, press the
[MODE] button again while pressing the [CHECK]
button.

MODE

AUTO
COOL

AUTO FAN

DRY

TEMP.

FAN

AUTO
QUIET

B

CAUTION

Do not use any other sharp tools (such
as cutters, pliers, or the like). Such tools

may cause breakage or damage.

See Fig. 8-6-1

Fig. 8-6-1

TEMP.

START/STOP

SWING

MODE

ON OFF SET CLR

FIX

RST

TIMER

CHK

FAN

ECO

[MODE] button

[CHECK] button

Fig. 8-6-2

3. Confirm that the indoor unit can operate with
the new setting.

– 48 –

FILE NO. SVM-05010

8-7. Others

8-7-1. Gas leak test

Electric parts cover

D

Flare nut connections
(Outdoor unit)

B

Valve stem cap connection

Fig. 8-7-1

• Check the flare nut connections, valve stem cap
connections and service port cap connections for
gas leak with a leak detector or soap water.

8-7-2. Test operation

C

Flare nut connections
(Indoor unit)

Valve stem cap
connection

A

Service cap connection

8-7-3. Auto restart setting

This product is designed so that, after a power failure,
it can restart automatically in the same operating mode
as before the power failure.

Information

The product was shipped with Auto Restart function
in the off position. Turn it on as required.

<How to set the auto restart>

• Press and hold down the TEMPORARY button for
about 3 seconds. After 3 seconds, the electronic
beeper makes three short beeps to tell you the Auto
Restart has been selected.

• To cancel the Auto Restart, follow the steps
described in the section Auto Restart Function of
the Owner’s Manual.

To switch the TEST RUN (COOL) mode, press
TEMPORARY button for 10 sec.
(The beeper will make a short beep.)

TEMPORARY button

Fig. 8-7-2

– 49 –

9. TROUBLESHOOTING CHART

FILE NO. SVM-05010

9-1. Troubleshooting Procedure :

9-2-2. Incorrect cable connection between Indoor

and outdoor units

Follow the details of 9-2. Basic Check Items.
If there is no trouble corresponding to 9-2, check
whether or not there are faulty parts following

9-4. Self-Diagnosis by Remote Control.

9-2. Basic Check Items

The indoor unit is connected to the outdoor unit with
4 cables. Check that the indoor and outdoor units have
been properly connected with terminals assigned the
same numbers. If the connectors are not properly
connected, the outdoor unit will not operate normally,
or OPERATION lamp and TIMER lamp will blink (5 Hz).

9-2.1 Power supply voltage

The line voltage must be AC 220 – 240 V. If it is not
within this range, the air conditioner may not operate
normally.

9-2-3. Program control

The microcontroller operates as shown in Table 9-2-1
to control the air conditioner. If there are any opera­tional problems, check whether or not the problems
correspond to Table 9-2-1. If they correspond to the
Table, they are not problems with the air conditioner,
but they are indispensable operations to control and
maintain the air conditioner properly.

Table 9-2-1

No. Operation of air conditioner Descriptions

1 When the main power supply is turned

on, the OPERATION lamp on the
indoor unit blinks.

2 The indoor fan motor speed does not

change in the Dry operation.

3 The compressor is not turned off even

though the room temperature is in the
range that the compressor is turned off.

The OPERATION lamp blinks to indicate that power is turned on. If the
[START/STOP] button is pressed, the lamp stops blinking.

The indoor fan motor speed is automatically controlled in the Dry
operation.

The compressor has a function that it is not turned off for 3 minutes
after it is turned on even though the room temperature is in the range
that the compressor is turned off.

4 The compressor is not turned on and

off even though the thermo control is
operated in the Dry operation.

*5 The PRE-DEF. lamp is indicated when

the Heating operation starts.

*6 The outdoor fan motor stops in the

Heating operation.

7 The compressor is not turned on even

though the room temperature is in the
range that the compressor is turned on.

8 The operation mode changes in the

Automatic operation.

9 The Auto Fan operation continues in the

Automatic operation.

10 The ECO operation

operation does not work.

Note *5 and *6 are for Heat pump model :

In the Dry operation, the compressor is turned on and off automatically
at the regular intervals, independent of the thermo control.

The PRE-DEF. lamp is indicated during the Defrosting operation or if
the indoor heat exchanger temperature is low when the Heating
operation starts. At this time, the indoor fan motor stops to prevent
cold air from blowing in the room.

When the indoor heat exchanger temperature is high, the outdoor fan
motor is stopped by the high-temperature limit control operation.

The compressor is not turned on in the restart delay timer (3-minutes
timer) operation. It is also not turned on after the power supply is
turned on because of this timer operation.

In Automatic operation, the room temperature is detected all time
for control fan speed and the operation mode is changed every
15 minutes according to difference between the room temperature
and the preset temperature.

When the room temperature is in the range
(Preset temperature ± 1°C), the Auto Fan operation is selected.

These operations do not work when the unit is in the Dry
operation or Auto Fan operation.

– 50 –

FILE NO. SVM-05010

9-3. Primary Judgement

9-3-1. 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 outlet 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

Table 9-3-1

Lamps Self-diagnosis

A OPERATION lamp is blinking. (1Hz)
B OPERATION lamp is blinking. (5Hz)
C OPERATION lamp is blinking. (5Hz)
D OPERATION lamp is blinking. (5Hz)
E OPERATION lamp is blinking. (5Hz)
F OPERATION and TIMER lamps are b linking.

(5Hz)

9-3-2. Failure diagnosis

The indoor unit diagnoses the operation condition and
indicates the information of the self-diagnosis with the
lamps on the display panel of the indoor unit.

Power failure (when the power supply is turning on)
Thermo sensor (TA) short or break
Heat exchanger sensor (TC) short or break
Indoor fan motor lock or failure
Indoor P.C. board failure
Wrong wiring of connecting cable

G OPERATION, TIMER and AUTO FAN lamps

are blinking.

H OPERATION, TIMER and AUTO FAN lamps

are blinking.

Table 9-3-2 Diagnosis by detective operation

Symptom Check Primary judgement

The remote control
does not work.

The outdoor fan
does not rotate.

Turn off the power supply once,
then turn it on. Try to operate
the remote control.

The compressor operates.

The compressor does not operate.

• Gas shortage or other refrigerant cycle trouble

• Heat exchanger sensor open, break or short

• Overload relay or thermostat trouble of compressor

Cycle failure

The remote control
still does not work.

The remote control
works.

The indoor unit (and/or remote
control) is/are defective .

OK.

The outdoor unit (Outdoor fan
motor) is defective.

An internal part of the
compressor is defective.

– 51 –

9-4. Self-Diagnosis by Remote Control

(Check Code)

(1) If the lamps are indicated as shown B to H in Table

9-3-1, execute the self-diagnosis by the remote
control.

(2) When the remote control is set to the service

mode, the indoor controller diagnoses the opera­tion condition and indicate the information of the
self-diagnosis on the display of the remote control
with the check codes. If a fault is detected, all
lamps on the indoor unit will blink at 5Hz and it will

beep for 10 seconds (Pi, Pi, Pi....). The timer lamp

usually blinks (5Hz) during the self-diagnosis.

9-4-1. How to use remote control in service mode

FILE NO. SVM-05010

MODE

AUTO
COOL

A

TEMP.

DRY

Hr.ON OFF

TEMP.

START/STOP

SWING

MODE

RST

TIMER

ON OFF SET CLR

FIX

CHK

FAN

AUTO
QUIET

FAN

ECO

• Alphanumeric characters are used for the check
code.

is 5. is 6.
is A. is B.
is C. is D.

WH-K13JE

WC-K12JE

(1) Press [CHK] button with a tip of pencil to set the

remote control to the service mode.

• “00” is indicated on the display of the remote
control.

• The timer lamp on the indoor unit blinks
continuously. (5 times per 1 sec.)

(2) Press [TEMP. 8] button.

If there is no fault with a code, the indoor unit will
beep once (Pi) and the display of the remote
control will change as follows:

00 01 1d 1E02 22

•

Check the unit with all 35 check codes (00 to 22).
as shown in Table 9-4-1.

• Press [TEMP. 9] button to change the check
code backwards.

If there is a fault, the indoor unit will beep for 10
seconds (Pi, Pi, Pi...).
Note the check code on the display of the remote
control.

• 2-digits alphanumeric will be indicated on the
display.

• All lamps on the indoor unit will blink. (5 times
per 1 sec.)

(3) Press [START/STOP] button to release the service

mode.

• The display of the remote control returns to as it
was before service mode was engaged.

Auto Fan

A

Heat

– 52–

Table 9-4-1

Block level Diagnosis function

Check

code code status

Block

Indoor
P.C. board

Cable
connection

Outdoor
P.C. board

Other parts
(including
compressor)

Check

Symptom

The indoor thermo sensor (TA) is
defective.
Disconnection or short-circuit

The indoor heat exchanger
sensor (TC) is defective.
Disconnection or short-circuit

The indoor fan motor or its circuit
is defective.

The part other than the above
parts on the indoor P.C. board is
defective.
EEPROM access error

IOL operation

The serial signals can not be
transmitted and received between
indoor and outdoor units.

The crossover wire is

•

connected wrongly.

The serial signal transmitting

•

circuit on the outdoor P.C. board
is defective.

The serial signal receiving

•

circuit on the indoor P.C. board
is defective.

The operation command signals
are not transmitted from the
indoor unit to the outdoor unit.

The outdoor thermo sensor (TE)
is defective.
Disconnection or short-circuit

The outdoor heat exchanger (TD)
sensor is defective.
Disconnection or short-circuit

The reply serial signal has been
transmitted when starting the
unit, but stops being transmitted
shortly after.

1. Compressor thermo operation

•

Gas shortage

• Gas leak

2. Instantaneous power failure

The discharge temperature is
over 120°C.

The IOL operation is defective.

Unit

Operation
continues.

Operation
continues.

All off

Operation
continues.

All off

Operation
continues.

Operation
continues.

All off

All off

Operation
continues.

All off

All off

Condition

The lamp on the
indoor unit blinks
when error is
defected.

The lamp on the
indoor unit blinks
when error is
defected.

The lamp on the
indoor unit blinks
when error is
defected.

The lamp on the
indoor unit blinks
when error is
defected.

The lamp on the
indoor unit blinks
when error is
defected.

The lamp on the
indoor unit blinks
when error is
defected.

The lamp on the
indoor unit blinks
when error is
defected. And it
returns to the
normal condition
when recovering
from errors.

The lamp on the
indoor unit blinks
when error is
defected.

The lamp on the
indoor unit blinks
when error is
defected.

The lamp on the
indoor unit blinks
when error is
defected. And it
returns to the
normal condition
when recovering
from errors.

The lamp on the
indoor unit blinks
when error is
defected.

The lamp on the
indoor unit blinks
when error is
detected.

FILE NO. SVM-05010

Judgement and action

1. Check the indoor thermo sensor (TA).

2. Check the indoor P.C. board.

1. Check the indoor heat exchanger
sensor (TC).

2. Check the indoor P.C. board.

1. Check the connector circuit of the
indoor fan motor (CN10).

2. Check the indoor fan motor.

3. Check the indoor P.C. board.

1. Check the indoor P.C. board.
(EEPROM and peripheral circuits)

Overload operation of refrigerating cycle

1. In the case of the outdoor unit not
operating at all;

•

Check the crossover cable and

connect it properly.

•

Check the outdoor P.C. board.

2. In the case of the outdoor unit operating
normally;

•

Check whether or not both of serial
LED (Green) and serial LED (Orange)
is blinking.
If the serial LED (Green) is not
blinking, check the outdoor P.C. board.
If the serial LED (Orange) is not
blinking, check the indoor P.C. board.

If the operation command signals continue
to be transmitted between 2 and 3 of the
indoor terminal block, replace the outdoor
P.C. board.

1. Check the outdoor thermo sensor (TE).

2. Check the outdoor P.C. board.

1. Check the outdoor heat exchanger
sensor (TD).

2. Check the outdoor P.C. board.

1. Repeatedly turn the indoor unit on and
off with the interval of approx. 10 to 40
minutes. (The check code is not
indicated during operation.) And supply
gas. (Check gas leak.)

2. The indoor unit operates normally
during the check.
If the reply serial signal continues to be
transmitted between 2 and 3 of the
indoor terminal block, replace the
outdoor P.C. board.
If the signal stops between them,
replace the indoor P.C. board.

1. Check the heat exchanger sensor (TD).

2. Gas purging

When turning on the unit, the normal
phase (RST) is detected but T-R waveform
has not been detected for 120 seconds or
more.

− 53 −

9-5. How To Diagnose Faulty Parts

[04 Serial signal error] (Heat pump model)

FILE NO. SVM-05010

Operation

Check item

Conceivable principle cause

Measure

Does outdoor

unit operate?

YES

NO

Are 1, 2 and 3 crossover

wires connected properly?

YES

Is connector

connected properly?

YES

Does LED (Orange) on

outdoor P.C. board blink?

YES

Does LED (Green) on

outdoor P.C. board blink?

YES

NO

NO

NO

NO

Outdoor P.C. board

is defective.

Indoor P.C. board

is defective.

Item by symptoms

Connect crossover

wires properly.

Connect connector

properly.

Replace

P.C. board.

Replace

P.C. board.

[08 Four-way valve error] (Heat pump model)

Does four-way valve

operate properly?

YES

Is TC sensor

resistance value

(10 kΩ at 25°C) normal?

NO

NO

YES

Does coil terminal

have 220 − 240 V

in heating operation?

YES

Are circuit

wires normal?

YES

Is outdoor P.C. board

normal?

YES

YES

NO

NO

Four-way valve

is defective.

Outdoor P.C. board

is defective.

(CN11 220 − 240 V)

Indoor P.C. board

is defective.

Replace

Four-way valve

Circuit check/modification

Replace

P.C. board.

Replace

P.C. board.

Replace TC sensor.

– 54–

[09 Other cycle error] (1) (Heat pump model)

FILE NO. SVM-05010

NO

Replace TC

sensor.

YES

Connect TC

sensor properly.

Does compressor operate?

YES

Is compressor

turned off shortly?

NO

Is TC sensor

resistance value

(10 kΩ at 25°C) normal?

YES

Is TC sensor

disconnected from

the sensing element?

NO

NO

YES

Does inner

overload relay

(in compressor)

operate?

NO

Is circuit wiring

normal?

YES

Is outdoor P.C.
board normal?

YES

YES

NO

NO

Check charged amount of refrigerant.

Check defective overload.

Check compressor.

Failure

Wiring check/modification

Outdoor P.C. board

is defective.

Indoor P.C. board

is defective.

Replace

compressor.

Replace

P.C. board.

Replace

P.C. board.

[09 Other cycle error] (2)

NO

Connect

connector

properly.

NO

Replace

condenser.

NO

Replace

fan motor.

Is connector

connected properly?

Is condenser normal?

Is indoor fan

motor normal?

YES

YES

YES

NO

Does indoor

fan operate?

Are filters clogged?

Is TC sensor

resistance value

(10 kΩ at 25°C) normal?

Is charged amount

of refrigerant normal?

Is outside air

low load?

YES

NO

YES

YES

NO

YES

NO

NO

YES

Clean filters.

Replace

TC sensor.

Anti-freezing operation

Charge

refrigerant.

Anti-freezing operation

Indoor P.C. board

is defective.

– 55 –

Replacd

P.C. board.

[0C Indoor TA sensor error]

FILE NO. SVM-05010

Is CN03 (TA sensor connector)

connected properly?

YES

Is TA sensor resistance value

(10 kΩ at 25°C) normal?

YES

[0d Indoor TC sensor error]

Is CN01 (TC sensor connector)

connected properly?

YES

NO

NO

NO

Indoor P.C. board is defective.

Connect CN03 properly.

Replace T A sensor.

Replace P.C. board.

Connect CN01 properly.

Is TC sensor resistance value

(10 kΩ at 25°C) normal?

YES

NO

Indoor P.C. board is defective.

[18 outdoor TE sensor error] (Heat pump model)

Is TE sensor connector

connected properly?

YES

Is TE sensor resistance value

(10 kΩ at 25°C) normal?

YES

NO

NO

Replace TC sensor.

Replace P.C. board.

Connect connector

properly.

Replace TE sensor.

Indoor P.C. board is defective.

– 56 –

Replace P.C. board.

[19 outdoor TD sensor error] (Heat pump model)

FILE NO. SVM-05010

Is TD sensor

connected properly?

YES

Is TD sensor resistance value

(50 kΩ at 25°C) normal?

YES

NO

NO

Outdoor P.C. board is defective.

[1E Discharge temp. error] (Heat pump model)

Connect connector

properly.

Replace TD sensor.

Replace P.C. board.

Is protective

controller such as discharge

thermostat normal?

YES

Is charged amount

of refrigerant normal?

YES

Is overload relay normal?

NO

Is TD sensor resistance value

(50 kΩ at 25°C) normal?

YES

NO NO

NO

YES

NO

Are wires connected

to connector properly?

Outdoor P.C. board is defective.

Connect wires to

connector properly.

Check and modify charged

amount of refrigerant.

Unit operates normally.

Replace TD sensor.

Replace P.C. board.

– 57 –

9-6. Troubleshooting for Indoor Unit

Operation

Measure

Item by symptoms

Check item

Conceivable principle

cause

9-6-1. Power can not be turned on. (The unit does not operate at all.)

<Primary check>

(1) Is the supply voltage normal?
(2) Is the connection to the AC output OK?
(3) Is the fuse (F01) blown?

Turn off power
supply once, and 5
second later, turn it

on again.

NO

Is OPERATION

lamp blinking?

YES

Does

Is it possible to

turn on power

supply by

pressing

[START/STOP]

button on remote

control?

YES

NO

transmission

mark on

remote

control flash

normally, and

is its signal
transmitted

properly?

YES

NO

FILE NO. SVM-05010

Remote control is

defective.

Refer to 9-9

ÒTroubleshooting for

Remote Control.Ó

Is DC 310 -

340V across

C63?

Are DC 12V,

across C66?

YES

YES

NO

NO

Is fuse (F01)

control board

Is voltage (DC

NO

indicated on

rear of indoor

control board

Turn off breaker

once and turn it

on again after

removing motor.

of indoor

blown?

NO

12V or 5V)

normal?

YES

YES

Parts (R21,

R22, SG01,

C01, DB01,

C02,

M01 and IC04)

are defective.

Are DC 12V,
across C66?

YES

– 58−

NO

Does the fan

motor

connector

between 1

and 2 short-

circuit?

NO

Microcomputer is

defective.

M01 is

def

ec

tive.

Unit operates

normally.

YES

Replace main P.C.

board.

Replace motor.

FILE NO. SVM-05010

9-6-2. Only the indoor fan does not operate

<Primary chec k>

(1) Is it possible to detect the power supply voltage (200 − 240V) between 1 and 2 on the terminal block?
(2) Does the indoor fan motor operate in cooling operation?

Shut off the

power supply once.

Turn the power supply.

Does the fan stop in

no operating status?

YES

Start the operation

with low fan setting

in cool operation.

Does the fan rotate?

YES

Change the setting of

cooling to high fan.

Does the fan speed

become higher?

YES

NO

NO

NO

Control P.C. board is defective.

Does AC 120V

or higher voltage apply

to between red and black

lead of fan motor?

YES

Shut off the power supply.

Does the cross flow
fan rotate normally?

YES

Turn on the power supply.

Operation

stops

NO

NO

Replace the P.C. board.

Does connecting

terminal, connecting

cable or power supply

cord completely?

Does not found the short

wire about connecting

cable and power cord?

YES

Repair the

bearing of

the fan.

Motor control circuit failure

(IC30, IC03, D38, R25, R26, Q17)

or 12V power circuit failure.

Replace the P.C. board.

of incompleted connecting.

NO

Thermal fuse operated

due to prevent

temperature rising cause

Normal

Is the rotation signal (DC+5V-0V)

output between 2 (gray lead wire)

and 3 (brown lead wire) of the motor

connector (CN11) when rotating

the cross flow fan by hand in no

operating status?

(1 pulse/one turn)

YES

Replace the control

P.C. board.

− 59 −

NO

Replace the fan motor

Replace connecting

the cable (or power cord),

thermal fuse and

terminal block.

9-6-3. Compressor does not operate.
<Primary check>

(1) Is the preset temperature higher than the room temperature in cooling operation?
(2) Is the crossover cable connected properly?

<Inspection procedure>

-Cooling only model-

FILE NO. SVM-05010

– 60 –

<Inspection procedure>

Turn on power supply.

FILE NO. SVM-05010

Does OPERATION

lamp blink?

YES

Is it possible to start

unit by remote control?

YES

Is it possible to detect AC 200V

between 2 and 3 on terminal block?

YES

Is crossover cable normal?

YES

Are all of compressor cords normal?

YES

Is compressor motor winding normal?

(Check winding resistor.)

YES

Is capacitor for compressor normal?

YES

NO

NO

NO

NO

NO

NO

NO

Compressor is defective.

Capacitor is defective.

Refer to item Power

can not be turned on .

Refer to 9-9 Troubleshooting

for Remote Control .

Replace P.C. Board

Connect crossover

cable properly.

Rewire or replace

defective cords.

Replace compressor.

Replace compressor.

Is overload relay normal?

YES

Does compressor start?

YES

Does compressor stop after a while?

YES

Is gas quantity normal?

(Check gas pressure.)

YES

Compressor is defective.

YES

Replace P.C. borad

NO

NO

NO

Overload relay is defective.

Compressor is defective.

Gas shortage (Gas leak)

Replace overload relay.

Replace compressor.

Supply gas.

− 61 −

<Inspection pr ocedure>

- Heating model

AC 70-100V

FILE NO. SVM-05010

Replace transformer

outdoor

P.C. board.

− 62 −

YES

FILE NO. SVM-05010

Are all of compressor cords normal?

YES

Is compressor motor winding normal?

(Check winding resistor.)

YES

Is capacitor for compressor normal?

YES

Is overload relay normal?

YES

Does compressor start?

YES

Does compressor stop after a while?

YES

Is gas quantity normal?

(Check gas pressure.)

YES

NO

NO

NO

NO

NO

NO

Compressor is defective.

Capacitor is defective.

Overload relay is defective.

Compressor is defective.

Gas shortage (Gas leak)

Rewire or replace

defective cords.

Replace compressor.

Replace capacitor.

Replace overload relay.

Replace compressor.

Supply gas.

Compressor is defective.

YES

Replace compressor.

– 63 –

FILE NO. SVM-05010

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

9-7-1. Outdoor unit does not operate.
<Inspection procedure>

(1) Is the voltage between and of the indoor terminal block varied?

1

(2) Are signals from the indoor unit to the outdoor unit transmitted correctly based upon the following diagram?

NOTE:

 Measure the voltage for 2 minutes and 30 seconds after starting the unit.


Heatpump model

Terminal block on indoor side

Red

2

3

White

2

1

Terminal block

Tester

Normal condition : Voltage varied between AC70 ~ 100V
Abnormal condition : Voltage does not vary.

Cooling model

Terminal block on indoor side

Red

White

3

2

1

Terminal block

Tester

Fig. 9-7-1

Normal condition : After start operated about 2 minutes and 30 seconds. Voltage between 2 and 3 of the

of the indoor's Terminal block should be equal AC 220 ~ 240V

Abnormal condition : Don't found voltage AC 220 ~ 240V from terminal block (0V)

9-7-2. Outdoor unit stops a while after starting the unit.

<Confirmation procedure> Select one of 3 cases below and follow the procedure.

(1) The outdoor unit stops between 10 and 20 minutes passed after starting and it takes 10 minutes or more to

restart the unit.

Gas has a low circulation.

Measure gas pressure.

Compressor is turned off and on automatically by thermo sensor

(Heat pump Model) or thermostat (Cooling only Model).

Gas shortage

Gas leak

Pipe clogging

(2) The outdoor unit stops once, it would not operate until the power is turned on again.

Refer to 9-6-4 "Compressor does not operate"

(3) The outdoor unit stops between 10 minutes to 1 hour after starting and a check code is indicated on the

remote control. (Check code 03-1E : Refer to Table 9-4-1.)

− 64−

FILE NO. SVM-05010

9-8. Troubleshooting for P.C. Board

<Inspection procedure>

(1) If the P.C. board is detective, check for

9-8-1. How to check indoor P.C. board

disconnection, burn or discoloration of the copper
foil pattern of the P.C. board.

<Cautions for handling P.C. board>

(1) When removing the front panel and the P.C. board,

be sure to turn off the power supply.

(2) When removing the P.C. board, hold the edge of

the P.C. board and do not apply force to the parts.

(3) When connecting or disconnecting the connectors

on the P.C. board, hold the housing. Do not pull at

(2) The P.C. board consists of the following 2 parts:

a. Main P.C. board parts:

Power relay, indoor fan motor drive circuit and
control circuit, C.P.U. and peripheral circuits, buzzer
drive circuit and buzzer.

b. Infrared rays parts:

Infrared rays receiving circuit

lead wires.

Check the defects of the P.C. board with Table 9-8-1.

Table 9-8-1 Inspection procedure

No. Procedure Check points Causes

1 Turn off the power supply and

remove the P.C. board assembly from
electric parts base. Remove the
connecting cables from the terminal
block.

2 Remove the connector of the motor

and turn on the power supply. If
OPERATION lamp blinks (once per
second), it is not neccessary to check
steps (1 to 4) in the right next
column.

Check whenther or not the fuse (F01) is
blown.

Check power supply voltage;

1. Between TP01 and CN31
(AC 220V)

2. Between + and – of C63
(DC310 – 340V)

3. Between 12V and GND

4.Between 5V and GND

Impluse voltage was applied or the
indoor fan motor short-circuited.

1.The terminal block or the crossover
cable is connected wrongly.

2. The capacitor (C01 and C02), line
filter (L01), resistor (R319),
or the diode (DB01) is defective.

3. M01, DB01, R319 and C63

are defective.

4. IC04 is defective.

3 Press [START/STOP] button once to

start the unit. (Do not set the mode to
Fan Only or On-Timer operation.)

4 Shorten the line of the restart delay

timer and start unit.

Check power supply voltage;

Between connector of Q25 and GND

1.
(for relay coil (DC12V))

2. Between 1 and 2 of terminal block
for connecting cable

Check whether or not all lamps
(OPERATION, TIMER, FAN ONLY, ECO
and AUTO) are indicated for 3 seconds
and

1. The wire of the rel
comes down or the relay drive
(Q25) is defective.

2. CN27 or
wrongly.

The lamps are defective or the
housing assembly (CN13) is defective.

RY03 is connected

ay coil (RY03)

– 65 –

FILE NO. SVM-05010

No. Procedure Check points Causes

5 Press [START/STOP] button once to

start the unit.

• Shorten the time of the
restart delay timer.

• Set the operation mode to COOL.

• Set the fan speed level to AUTO.

• Set the preset temperature much

lower than the room temperature.
(The unit (compressor)
operates continuously in the above

condition.)

6 Connect the motor connector to the

motor and turn on the power supply.
Start the unit in the following
condition.

• Set the operation mode to FAN.

• Set the fan speed level to HIGH.

(The unit (compressor) operates
continuously in the above
condition.)

1. Check whether or not the compres­sor operates.

2. Check whether or not the OPERA­TION lamp blinks.

1. The motor does not operate.
(But it is possible to receive the
signal from the remote control.)

2. The motor rotates but vibrates
strongly.

1. The temperature of the indoor heat
exchanger is extremely low.

2. The connection of the heat
exchanger sensor is loose.
(The connector is disconnected.)
(CN01)

3. The heat exchanger sensor and
the P.C. board are defective.
(Refer to Table 9-8-2.)

4. The main P.C. board is defective.

1. The indoor fan motor is defective.
(Protected operation of P.C. board)

2. The connection of the motor
connector is loose.

3. The P.C. board is defective.

Table 9-8-2 Appr oximate resistance v alue of thermo sensor

Temperature 0°C10°C20°C25°C30°C

Resistance value 35.8 20.7 12.6 10.0 7.92

9-8-2. How to shorten time of restart delay time

(1) Set the operation mode, temperature, and air flow

rate to be applied with the timer short mode.

(2) Push the [CLR] button while keeping [CHK] button

pushed. in this case, the check mode is released,
and the timer short mode is waited.

MODE

AUTO

COOL

DRY

AUTO FAN

TEMP.

Hr.ON OFF

TEMP.

FAN

AUTO
QUIET

(The status is kept even if [CHK] and [CLR] buttons
are released.)

START/STOP

(3) Pushing [START/STOP] buttons sends operation

code + timer short code.

(4) The timer short mode is released by only a trans-

mission. Therefore, repeat steps from (2) to
perform the timer short mode again.

SWING

FIX

FAN

MODE

ON OFF SET CLR

RST

TIMER

CHK

ECO

[CHK] button

[CLR] button

(kΩ)

– 66 −

9-9. Troubleshooting for Remote Control

FILE NO. SVM-05010

Is receiver on

indoor unit exposed

to direct sunlight?

YES

NO

Is there any

thyristor fluorescent

light nearby?

YES

YES

NO NO

Press START/STOP

button.

Is transmission

mark indicated?

Does indoor unit

operate when

moving remote control

near receiver or

indoor unit?

YES

Batteries are

exhausted.

The unit does not beep at all.
OPERATION lamp on
indoor unit is not indicated.

NO

Press ACL button
on remote control

with tip of pencil.

Press START/STOP

button.

Avoid direct

sunlight.

Keep indoor unit

away from

thyristor

fluorescent light.

Does indoor unit

NO

start to operate by

automatic restart

function?

YES

Does radio sound

is affected by

remote control when

a signal is transmitted

at distance of 5 cm

from radio?

P.C. board is

defective.

Replace

P.C. board.

YES

Is transmission mark

indicated?

NO

NO

Replace

batteries.

Note : After replacing batteries,

press the RESET button
with a tip of a pencil.

Does indoor unit

beep and operate?

operation

YES

YES

Normal

NO

Remote control

is defective.

Replace

remote control.

– 67 –

(2)

(2) (2)

4-screws

(6) TC sensor

FILE NO. SVM-05010

10. PART REPLACEMENT

10-1. Indoor Unit

No. Part name Procedures Remarks

1 Front panel

How to remove the front panel

1) Stop the operation of the air conditioner and turn off
its main power supply.

2) Pull the inlet grille toward you to open it and remove
4 screws fixing the front panel.

3) Remove upper 3 hooks of the front panel from the
back body.

4) Open the horizontal grille right below by hand.

5) Pull the lower side of the front panel toward you
until it touches the horizontal grille to remove it.

2 Electrical part

assembly

How to mount the front panel

1) Mount the front panel with the inverse procedure of
“How to remove the front panel”.

2) Push 3 places (right, left and center) of the air
outlet.

3) Check the gap between the front panel and the
back body.
If you operate the air conditioner in cooling or dry
operation without pushing the 3 places, the surface
of the front panel may be covered with frost and
have dewdrops.

1) Remove the front panel with the procedure 1.

2) Remove the screw fixing the electrical part box.

3) Remove the drain guide.

4) Remove the connector (5P) for the fan motor and
the connector (6P) for the louver motor from the
microcomputer assembly.

5) Remove the screw for the earth, and pull the
electrical part base toward you to remove it from
the main unit.

6) Pull out the TC sensor from the sensor holder.

(3) Drain guide

(3)

(4)

(5) screws

5P
6P

(2) screws

When assembling the electrical parts
assembly, make the connecting cable
U-shaped and put it in the drain pan.

– 68 –

Bearing base

Bearing

Motor fixture

(4) BODY (R)

(3) 2 screws

(4)

FILE NO. SVM-05010

No. Part name Procedures Remarks

3 Horizontal g rille

1) Remove center 2 shafts of the horizontal grille from
the back body.

2) Remove left shaft of the horizontal grille from the
back body.

3) Remove the horizontal grille from the back body.

(1) Center shafts

(2) Left shafts

4 Heat exchanger

5 Cross flow fan

1) Remove the front panel, electrical parts assembly
and the horizontal grille with procedure 2 and 3.

2) Remove the screw on the rear side of the main unit
to remove the pipe holder.

3) Remove 2 screws fixing the heat exchanger and
the bearing base.

4) Remove 2 screws fixing the heat exchanger fixtures
(upper and lower) and the back body then pull out
the upper side of the heat exchanger slowly.

1) Remove the front panel, electrical parts assembly,
horizontal grille and the heat exchanger with
procedure 4.

2) Loosen the set screw of the cross flow fan.

3) Remove 2 screws fixing the bearing base and the
back body.

4) Pull the cross flow fan toward you.

Pipe holder

(3) 2 screws

(2) Screw

Bearing base

(4) 2 screws

(3) Screws

(2) Set screw

6 Bearing base

7 Fan motor

When assembling the cross flow fan, fix it
with the set screw at the position where the
gap between the back body and the right
surface of the cross flow fan is 4 mm.

1) Remove the front panel, electrical parts assembly,
horizontal grille, heat exchanger and the cross flow
fan with procedure 5.

2) Remove the bearing from the bearing base.
If the housing protrudes from the base bearing, put
the housing in position and assemble the bearing to
the bearing base.

1) Remove the front panel, electrical parts assembly,
horizontal grille, and the heat exchanger with
procedure 4.

2) Loosen the set screw of the cross flow fan.

3) Remove 2 screws of the motor fixture.

4) Remove the lower side of the body (R) and move it
right to remove it.

5) Remove the motor from the motor fixture.

– 69 –

FILE NO. SVM-05010

10-2. Outdoor Unit (38CJR024-723, 38TAR024X-723, 38TAR018-723)

No. Part name Procedures Remarks

1 Common

procedure

1) Stop the operation of the air conditioner and turn off
its main power supply or remove the power supply
cord.

2) Remove the electrical parts cover .
(4 screws ∅4 x 10L)

3) Remove 2 cord clamps (4 screws ∅4 x 22L) and
disconnect the power supply cord and connecting
cable after removing 6 screwson on the terminal
block and 1 ground screw on the electrical parts
base.

4) Remove the top cabinet. (7 screws ∅4 x 10L)

5) Remove the front cabinet. (2 screws ∅4 x 10L)

6) Remove the side cabinet
(4 screws ∅4 x 10L & 2 screws ∅4 x 14L)

Top cabinet

Front cabinet Side cabinet

4 screws ∅4 x 22L

Electrical
parts cover

2 Running

capacitor
for compressor

3 Running

capacitor
for fan motor

4 Magnetic

contactor

5 Spark killer

1) Perform the common procedure 1

2) Remove the capacitor band. (1 screw ∅4 x 10L)

3) Disconnect the lead wires from the capacitor
terminal.

1) Perform the common procedure 1

2) Remove the fixing screw. (1 screw ∅4 x 10L)

3) Disconnect the lead wires from the capacitor
terminal.

1) Perform the common procedure 1

2) Remove the fixing screw. (2 screws ∅4 x 10L)

3) Disconnect the lead wires from the terminal.

1) Perform the common procedure 1

2) Remove the fixing screw. (1 screw ∅4 x 10L)

3) Disconnect the lead wires from the terminal.

Spark killer

Magnetic contactor

Cooling only model

Running capacitor
for compressor

Running capacitor
for fan motor

– 70 –

FILE NO. SVM-05010

10-3 Outdoor Unit (38CJR018-723)

No. Part name Procedures Remarks

1 Common

procedure

1) Stop the operation of the air conditioner and turn off
its main power supply or remove the power supply
cord.

2) Remove the packed valved cover and the electrical

Parts cover

(3 screws ∅ 4 x 10L)

3) Remove 2 cord clamps (4 screws ∅ 4 x 22L) and
disconnect the power supply cord and connecting
cable after removing 6 screws on the terminal block
and 1 ground screw on the electrical parts base.

4) Remove the upper cabinet. (4 scerws ∅ 4 x 10L)
(Pulling out upward)

5) Remove the front cabinet. (3 screws∅ 4 x 10L)

(Pull the front right protion toward you, and remove
it pulling out upward.)

Packed valve cover

Upper
cabinet

Electric

parts cover

3 - screws ∅ 4 x 10L

2 Cord clamps

4 - screws ∅4 x 22L

2 Running

capacitor
for compressor

Running

3

capacitor
for fan motor

4 Magnetic contactor

Spark killer

5

1) Perform the common procedure 1

2) Remove the capacitor band. (1 screw ∅4 x 10L)

3) Disconnect the lead wires from the capacitor
terminal.

1) Perform the common procedure 1

2) Remove the fixing screw. (1 screw ∅4 x 10L)

3) Disconnect the lead wires from the capacitor
terminal.

1) Perform the common procedure 1

2) Remove the fixing screw. (2 screws ∅4 x 10L)

3) Disconnect the lead wires from the terminal.

1) Perform the common procedure 1

2) Remove the fixing screw. (1 screw ∅ 

4 x 10L)

3) Disconnect the lead wires from the terminal.

Front

cabinet

Running capacitor
for compressor

Magnetic
contactor

Spark killer

Running capacitor
for fan motor

− 71 −

FILE NO. SVM-05010

10-4. Outdoor Unit (38HNR024-713)

No. Part name Procedures Remarks

1 Common

procedure

1) Stop the operation of the air conditioner and turn off
its main power supply or remove the power supply
cord.

2) Remove the electrical parts cover .
(4 screws ∅4 x 10L)

3) Remove 2 cord clamps (4 screws ∅4 x 22L) and
disconnect the power supply cord and connecting
cable after removing 6 screwson on the terminal
block and 1 ground screw on the electrical parts
base.

4) Remove the top cabinet. (7 screws ∅4 x 10L)

5) Remove the front cabinet. (2 screws ∅4 x 10L)

6) Remove the side cabinet
(4 screws ∅4 x 10L & 2 screws ∅4 x 14L)

Top cabinet

Front cabinet Side cabinet

4 screws ∅4 x 22L

Electrical
parts cover

2 Running

capacitor
for compressor

3 Running

capacitor
for fan motor

4 Magnetic

contactor

5 Transformer

6 P.C. Board

1) Perform the common procedure 1

2) Remove the capacitor band. (1 screw ∅4 x 10L)

3) Disconnect the lead wires from the capacitor
terminal.

1) Perform the common procedure 1

2) Remove the fixing screw. (1 screw ∅4 x 10L)

3) Disconnect the lead wires from the capacitor
terminal.

1) Perform the common procedure 1

2) Remove the fixing screw. (2 screws ∅4 x 10L)

3) Disconnect the lead wires from the terminal.

1) Perform the common procedure 1

2) Remove the fixing screw. (2 screws ∅4 x 10L)

3) Disconnect the housing from the P.C. Board.

1) Perform the common procedure 1

2) Disconnect the lead wires from the P.C. Board.

3) Remove P.C.Board after unhooking 4 clams.

Magnetic contactor

P.C. Board

Transformer

Running capacitor
for compressor

Running capacitor
for fan motor

– 72 –

FILE NO. SVM-05010

10-5 Outdoor Unit (38HNR018-713)

No. Part name Procedures Remarks

1 Common

procedure

1) Stop the operation of the air conditioner and turn off
its main power supply or remove the power supply
cord.

2) Remove the electrical parts cover.
(4 screws ∅ 4 x 10L)

3) Remove 2 cord clamps (4 screws ∅ 4 x 22L) and
disconnect the power supply cord and connecting
cable after removing 6 screws on the terminal block
and 1 ground screw on the electrical parts base.

4) Remove the front cabinet. (8 scerws ∅ 4 x 10L)
(Pull the front lower portion toward you, and pull out
it upward to remove it.)

5) Remove the side cabinet. (8 screws ∅ 4 x 10L)

Remove
8 screws Ø4 x 10L

4 screws Ø4 x 22L 4 screws Ø4 x 10L

2 Running

capacitor
for compressor

3 Running

capacitor

4 Magnetic contactor

5 Transformer

6 P.C. Board

1) Perform the common procedure 1

2) Remove the capacitor band. (1 screw ∅ 4 x 10L)

3) Disconnect the lead wires from the capacitor
terminal.

1) Perform the common procedure 1

2) Remove the fixing screw. (1 screw ∅ 4 x 10L)

3) Disconnect the lead wires from the capacitor
terminal.

1) Perform the common procedure 1

2) Remove the fixing screw (2 screw ∅4 x 16L)

3) Disconnect the lead wires from the terminal.

1) Perform the common procedure 1

2) Remove the fixing screw. (2 screws ∅ 4 x 10L)

3) Disconnect the housing from the P.C. Board.

1) Perform the common procedure 1

2) Disconnect the lead wires from the P.C. Board.

3) Remove P.C. Board after unhooking 4 clams.

Running capacitor
for compressor

P.C. Board

Magnetic contactor

Running capacitor
for fan motor

Transformer

− 73−

11. EXPLODED VIEWS AND PARTS LIST

11-1. Indoor Unit (E-Parts Assy)

FILE NO. SVM-05010-2

Location Part

No. No.

402 43T60002 Terminal Block, 3P
403 43T50004 Sensor, Heat Exchanger 10 k 25°C
404 43T69005 Sensor, Thermostat 10 kΩ 25°C
405

43T69066

407 43T62003 Cord Clamp

P.C. Board ASSY, WRS-LED
MCC-819

Description

Location Part

Ω

– 74 −

No. No.

411 43T69442 P.C. Board ASSY (42TAR024X,CJR024)
411
411 43T69445 P.C. Board ASSY (42TAR018-723)
411 43T69448 P.C. Board ASSY (42HNR024-713)

411 43T69449

43T69443

P.C. Board ASSY (42CJR018-723)

P.C. Board ASSY (42HNR018-713)

Description

11-2. Indoor Unit

FILE NO. SVM-05010-2

Location

No. No.

201 43T00411 Front Panel, ASSY
202 43T09323
202

203 43T80306 Air Filter (L)
204 43T80312 Air Filter (R)

207 43T03010 Body, Right
208 43T03011 Body, Left
209 43T03012 Hide, Claw
210 43T09334 Grille, horizontal
211 43T70301 Hose ASSY;Drain
212 43T21302 Motor, Stepping
213 43T44362 Refrigeration Cycle ASSY

213 43T44363 Refrigeration Cycle ASSY

214 43T47311 Pipe, Delivery
215

215

216
217
218

Part

43T09333

43T47016 Pipe, Suction

43T47316 Pipe, Suction

43T49010 Pipe, Shield
43T19003 Holder, Sensor
43T49009 Spring

Grille ASSY (Cooling model)

Grille ASSY (Heat pump model)

(42CJR018-723,42HNR018-713)

(42TAR018/024X-723,42CJR024-723,
42HNR024-713)

(42CJR018-723,42HNR018-713)

(42TAR018/024X-723,42CJR024-723,
42HNR024-713)

Description

Location Part

No.

No.

219 43T49036 Plate; EVA-Seal

220 43T49039 Holder; Plate EVA-Seal
221 43T49038 Plate; EVA-Seal
222 43T49037 Holder; Plate EVA-Seal
223 43T79007 Guide Drain
224 43T39306 Fix Motor
226 43T21359 Motor, Fan
227 43T20309
228 43T22002
229 43T39015 Base, Bearing
230 43T03301 Back Body ASSY
231 43T07022 Holder, Pipe
232 43T82007 Plate, Installation
233 43T85476 Owner's Manual (42CJR024-723,

233

234 43T69419

234 43T69420 Remote Control, Wireless

235 43T63002 Holder, Remote Control
236 43T62029

43T85477

Fan, Cross Flow

ASM-M-BEARING

42CJR018-723)
Owner's Manual (42HNR024-713,
42HNR018-713, 42TAR024X-723,
42TAR018-723)
Remote Control, Wireless
(Cooling moded)

(Heat pump moded)

Cover, Terminal

Description

− 75−

11-3. Outdoor Unit (38CJR024-723, 38TAR024X-723)

FILE NO. SVM-05010

Location Part

No. No.

01 43T00024 Panel, Air Outlet
02 43T00025 Panel, Front
03 43T00026 Panel, Side

04 43T42316 Base Assembly
05 43T19320 Guard, Fin
06 43T19319 Guard, Fan

07 43T91001 Plate, Roof
08 43T42005 Plate, Valve, Packed
09 43T15001 Handle

10 43T43349 Condenser Assembly
11 43T46014 Valve, Packed 15.88Dia.
12 43T46016 Valve, Packed 6.35Dia.
13 43T47334 Bonnet, 15.88Dia.
14 43T47331 Bonnet, 6.35Dia.

16 43T60324 Terminal Block, 6P

43T41370

18

Compressor, PH400X3CS-4KT1

Description

Location Part

No. No.

− 76 −

Description

19 43T62014 Protector, Cord
20 43T62015 Protector, Cord

43T49316 Rubber Cushion

23
24 43T21314 Motor, Fan, AC 220 − 240V 50Hz

25 43T20301 Fan, Propeller

26 43T96001 Bushing
27 43T96004 Bushing, Cord

28 43T62013 Cover, E-Parts

29

43T52305

30 43T55322 MF Capacitor (45µ F 440V)
31 43T55321 MF Capacitor (3.5µ F 450V)

32 43T96003 Clip, Cable
40 43T47317 Nut, Flange

43 43T33002 Spark-Killer
44 43T47025 Capillar Tube 2.4Dia.

Magnetic contactor, A35

, PP491

11-4. Outdoor Unit (38TAR018-723)

FILE NO. SVM-05010

Location Part

No. No.

01 43T00024 Panel, Air Outlet
02 43T00025 Panel, Front
03 43T00026 Panel, Side

04 43T42316 Base Assembly
05 43T19320 Guard, Fin
06 43T19319 Guard, Fan

07 43T91001 Plate, Roof
08 43T42005 Plate, Valve, Packed
09 43T15001 Handle

10 43T43320 Condenser Assembly
11 43T46014 Valve, Packed 15.88Dia.
12 43T46016 Valve, Packed 6.35Dia.
13 43T47334 Bonnet, 15.88Dia.
14 43T47331 Bonnet, 6.35Dia.

15 43T47013 Capillary Tube, 2.0Dia.
16 43T60324 Terminal Block, 6P

18 43T41369 Comressor, PH290X2C-4FT1

Description

Location Part

No. No.

− 77 −

Description

19 43T62014 Protector, Cord
20 43T62015 Protector, Cord

23

43T49008 Rubber Cushion

24 43T21314 Motor, Fan, AC 220 − 240V 50Hz
25 43T20301 Fan, Propeller, PP491

26 43T96001 Bushing

43T96004 Bushing, Cord

27
28 43T62013 Cover, E-Parts

29 43T52302 Magnetic Contactor,

AC 220− 240V 50Hz

30 43T55320 MF Capacitor (35µ F 440V)
31 43T55321 MF Capacitor (3.5µ F 450V)

43T96003

32

43T47317 Nut, Flange

40

43T33002 Spark-Killer

43

Clip, Cable

11-5. Outdoor Unit (38CJR018-723)

FILE NO. SVM-05010

Location Part

No. No.

01 43T00374 Front Cabinet Assembly
02 43T03306 Back Cabinet Assembly

03 43T42317 Base Coat Assembly

04 43T09320 Wire Guard
05 43T62311 Electric Part Cover
06 43T20307 Fan Propeller
07 43T21345 Fan Motor
08 43T47001 Nut Flange
09 43T43359 Condenser Assembly
10 43T46308 Valve;Packed 6.35Dia.
11 43T46019 Valve;Packed 12.7Dia.
12 43T47331 Bonnet, 6.35Dia.
13 43T47333 Bonnet, 12.70Dia.

14

43T43303 Fixing Plate Valve

Description

Location Part

No. No.

15 43T47013 Capillary Tube; 2.0Dia.
16 43T41371 Compressor;PH340X3C-4KT1
17 43T47324 Bolt Compressor (M6)
18 43T49008 Cushion, Rubber

20 43T00396 Upper Cabinet Assembly

21

22

23

− 78 −

Description

43T52310 Packed Valve Cover Assembly19

43T55322 MF Capacitor (45µF 440V)
43T55325 Capacitor, Plastic-Film

43T60352 Terminal Block, 6P

27 43T52302 Magnetic Contactor, CLK-26J

28

43T33002 Spark-Killer

11-6. Outdoor Unit (38HNR024-713)

FILE NO. SVM-05010

Location Part

No. No.

01 43T00024 Panel, Air Outlet
02 43T00025 Panel, Front
03 43T00026 Panel, Side

04 43T42307 Base Assembly
05 43T19320 Guard, Fin
06 43T19319 Guard, Fan

07 43T91001 Plate, Roof
08 43T42005 Plate, Valve, Packed
09 43T15001 Handle

10 43T43357 Condenser Assembly
11 43T46014 Valve, Packed 15.88Dia.
12 43T46016 Valve, Packed 6.35Dia.
13 43T47334 Bonnet, 15.88Dia.
14 43T47331 Bonnet, 6.35Dia.
15 43T47013 Capillary Tube, 2.4Dia.

16 43T60324 Terminal Block, 6P

17

43T60325 Filter, Clamp

43T41343 Comressor, 2JS386D5BB02

18

19 43T62014 Protector

20 43T62015 Protector, Cord

Description

, Cord

Location Part

No. No.

23 43T49309 Cushing, Rubber
24 43T21315 Motor, Fan, AC225-240V 50Hz
25 43T20301 Fan, Propeller, PP491

26 43T96001 Bushing
27 43T96004 Bushing, Cord

28 43T62013 Cover, E-Parts

29 43T52305 Magnetic contactor, A35
30 43T55323 MF Capacitor (60µ F 440V)
31 43T55321 MF Capacitor (3.5µ F 450V)

32 43T96003 Clip, Cable
33 43T46319 4-Way Valve

34 43T46330 Coil, V-4Way, AC220-240V 50Hz
35 43T69059 Sensor, TE
36 43T69060 Sensor, TD

37 43T79305 Drain Nipple
38 43T58301 Transformer, TT-05

39 43T69336 PC Board
40 43T47317 Nut, Flange
48 43045085 Dry-Tank
49 43T47308 Capillary Tube,1.0Dia.

50 43T46005 Check-Valve

Description

− 79 −

11-7. Outdoor Unit (38HNR018-713)

FILE NO. SVM-05010

Location Part

No. No.

01 43T00405 Cabinet, Front
02 43T00005 Cabinet, Back

03 43T00004 Cabinet, Side
04 43T42306 Base
05 43T00011 Plate, Packed, Valve

06 43T19007 Guard, Fan
07 43T19005 Handle
08 43T62301 Cover, E-Parts
09 43020302 Fan, Propeller, PP411
10 43T21333 Motor Fan, AC220-240V 50Hz
11 43T47001 Nut Flange
13 43T96001 Bushing

14

43043609 Condenser Assembly

15 43T46311 Valve, Packed 6.35 DIA
16 43T47331 Bonnet, 6.35 DIA

17 43T46019 Valve, Packed 12.7 DIA
18 43T47333 Bonnet, 12.7 DIA
19 43T47309 Capillary Tube, 0.8 DIA

Description

Location Part

No. No.

23
24 43T55322 MF Capacitor (45µF 440V)

25 43T55324 Capacitor, Plastic-Film

26 43T60324 Terminal Block, 6P

27 43T41341 Compressor, 2JS350D5DA02
28 43T52302 Magnetic Contactor, CLK-26J

36

37
38

47

48

− 80 −

Description

43T49309 Cushion, Rubber

29 43T46319 4-Way Valve

43T46330 Coil, V-4Way, AC220-240V 50Hz

30

43T69059 Sensor, TE31
43T69060 Sensor, TD32

43T79305 Drain Nipple33
43T58301 Transformer, TT-0534
43T69336 PC Board35

43T43316 Sub Condensor
43T47013 Capillary Tube, 2.0 DIA

43T60325 Filter, Clamp

43045085 Dry-Tank
43T19002 Guard-Stopper

FILE NO. SVM-03012

– 64 –