General AOH20F, ASH9FMBD, AOH20FSAV3 Service Manual

MULTI AIR CONDITIONER

WALL MOUNTED

type

Models

Indoor unit Outdoor unit

ASH9FMBD AOH20FSAV3

CONTENTS

SPECIFICATIONS OUTLINE AND DIMENSIONS REFRIGERANT SYSTEM DIAGRAM CIRCUIT DIAGRAM INDOOR PCB CIRCUIT DIAGRAM OUTDOOR PCB CIRCUIT DIAGRAM ERROR CONTENTS DISASSEMBLY ILLUSTRATION PARTS LIST STANDARD ACCESSORIES

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1 2 4

7

8 10 17 19

SPECIFICATIONS

ELECTRICAL DATA

TYPE

OPERATION

INDOOR UNIT / OUTDOOR UNIT

COOLING CAPACITY

POWER SOURCE

FREQUENCY

RUNNING CURRENT

INPUT WATTS

E.E.R.

MOISTURE REMOVAL

AIR CIRCULATION-High

INDOOR UNIT

HIGH-SPEED

MED-SPEED

FAN MOTOR

LOW-SPEED

Unit A

(1 room)

ASH9FMBD / AOH20FSAV3

2.50 kW

4.0 A

0.85 kW

2.94 kW/kW

0.8 L/hr

520 m3/hr

COOL

Unit B1 or B2

(1 room)

2.80 kW

230 V

50 Hz

4.8 A

1.05 kW

2.66 kW/kW

1.0 L/hr

520 m3/hr

1,310 r.p.m.

1,190 r.p.m.

1,070 r.p.m.

Unit A + B1 + B2

(3 rooms)

6.05 kW

8.4 A

1.88 kW

3.22 kW/kW

2.0 L/hr

520 m3/hr x 3

QUIET

DIMENSIONS

WEIGHT

NOISE LEVEL

H x W x D

GROSS / NET

HIGH-SPEED

MED-SPEED

LOW-SPEED

QUIET

OUTDOOR UNIT

COMPRESSOR TYPE

COMPRESSOR DISCRIMINATION

POWER SOURCE

REFRIGERANT

ADDITIONAL CHARGE

CHARGELESS PIPE LENGTH

MAXIMUM PIPE LENGTH

R410A

960 r.p.m.

257 x 808 x 187 mm

10 kg / 8 kg

40 dB

37 dB

34 dB

31 dB

Hermetic type, Permanent split condenser,

2 pole, Single phase, Induction motor, Rotary

Comp A : 802 100 65B, Comp B : 802 141 65B

230V - 50Hz

Comp A : 750 g, Comp B : 850 g

Comp A : 10 g/m, Comp B : 10 g/m

Comp A : 7.5 m, Comp B (Total) : 15 m

Comp A : 15 m, Comp B (Total) : 20 m

FAN MOTOR

DIMENSIONS

WEIGHT

NOISE LEVEL

H x W x D

GROSS / NET

780 r.p.m.

700 x 900 x 330 mm

68 kg / 61 kg

52 dB

12006.03.16

OUTLINE AND DIMENSIONS

INDOOR UNIT Model : ASH9FMBD (Unit : mm)

808

257

187

22006.03.16

OUTDOOR UNIT Model : AOH20FSAV3 (Unit : mm

40900

33031 12

700

21

9

400

650

Air Flow

370

32006.03.16

REFRIGERANT SYSTEM DIAGRAM

Models : ASH9FMBD x 3 / AOH20FSAV3

OUTDOOR UNIT

UNIT A

Compressor A

UNIT B

Heat Exchanger (Condenser)

Discharge Pipe

Thermistor B

Discharge Pipe

Thermistor A

Main Capillary Tube

Strainer

Balance Capillary

Strainer

Distributor

Tube x 2

Compressor B

Refrigerant direction

Refrigerant pipe (Liquid) diameter : 6.35 mm (1/4 inch)

Refrigerant pipe (Gas) diameter : 9.53 mm (3/8 inch)

Capillary

3-Way valve

Pipe Thermistor

Heat Exchanger (Evaporator)

INDOOR UNIT A

Tube (main)

Solenoid

Valve B1

2-Way valve

3-Way valve

Pipe Thermistor

Heat Exchanger (Evaporator)

INDOOR UNIT B1

INDOOR UNIT B2

Valve B2

2-Way valve

Gas pipeGas pipeGas pipe

Liquid pipeLiquid pipeLiquid pipe

Pipe Thermistor

Heat Exchanger (Evaporator)

3-Way valve

42006.03.16

CIRCUIT DIAGRAM

Models : ASH9FMBD / AOH20FSAV3

INDICATOR PCB

FAN MOTOR

EMI FILTER

TRANSFORMER

CN201

RED

F M

BLACK

WHITE

6

WHITE

5

WHITE

4

WHITE

3

WHITE

2 1

WHITE

BLACK

WHITE

YELLOW

GREEN

GRAY

1 2

6

5

4

3

2

RED

1

2

3

1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8

BLUE

1 2 3 4 5 6 7 8

5

4

3

2

1

W101

PURPLE

THERMAL

FUSE

RED

GRAY

TEST

2

1

CN2 CN3

CN8 CN4

WHITE

3 2 1

212

2 1

3

CN1

CN6

WHITE

CN105

3 2 1

1

2 1

W103

ROOM TEMPERATURE THERMISTOR

5

4

PIPE TEMPERATURE THERMISTOR

BLUE

10

PINK

9

YELLOW

8

CN5

ORANGE

7

RED

6

CONTROLLER PCB

WHITE

3

K103

4

RELAY

POWER SUPPLY PCB

CN104 CN102

CN103

RED

WHITE

BLACK

M

STEP MOTOR

FAN MOTOR

TRANSFORMER

CN201

INDICATOR PCB

RED

WHITE

F M

BLACK

EMI FILTER

BLACK

WHITE

6

WHITE

5

WHITE

4

WHITE

3

WHITE

2 1

BLACK

WHITE

YELLOW

GREEN

GRAY

1 2

6

5

4

3

2

RED

1

2

3

1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8

BLUE

1 2 3 4 5 6 7 8

5

4

3

2

1

W101

PURPLE

THERMAL

FUSE

RED

GRAY

INDOOR UNIT

ROOM TEMPERATURE THERMISTOR

TEST

2

5

3

4

1

CN1

CN2 CN3

CN8 CN4

CN6

WHITE

CN105

3

2

1

212

1

2

1

W103

PIPE TEMPERATURE THERMISTOR

BLUE

10

PINK

9

YELLOW

8

CN5

ORANGE

7

RED

6

CONTROLLER PCB

WHITE

K103

RELAY

POWER SUPPLY PCB

CN104 CN102

CN103

WHITE

3

4

RED

BLACK

M

STEP MOTOR

INDICATOR PCB

FAN MOTOR

EMI FILTER

TRANSFORMER

CN201

RED

F M

BLACK

WHITE

6

WHITE

5

WHITE

4

WHITE

3

WHITE

2 1

WHITE

BLACK

WHITE

YELLOW

GREEN

GRAY

RED

PURPLE

THERMAL

RED

GRAY

6 5 4 3 2 1

1 2 3

5 4 3 2 1

FUSE

RED

GRAY

1 2

6 5 4 3 2 1

1 2 3

1 1

BLUE

1

5 4 3 2 1

W101

TEST

2

3

4

1

CN1

CN2 CN3

CONTROLLER PCB

CN8 CN4

CN6

3 4 567 8

2

3 4 567 8

2

WHITE

3 4 567 8

2

CN105

CN101

3

2

1

212

1

2

1

W103

WHITE

ROOM TEMPERATURE THERMISTOR

5

PIPE TEMPERATURE THERMISTOR

BLUE

10

PINK

9

YELLOW

8

CN5

ORANGE

7

RED

6

WHITE

K103

M

3

4

RELAY

POWER SUPPLY PCB

CN104 CN102

CN103

RED

BLACK

STEP MOTOR

COMP. CAPACITOR A

WHITE

RED

WHITE

R

OVERLOAD

PROTECTOR

ORANGE

WHITE

BLACK

UNIT A

S

BLACK

C

BLACK

WHITEWHITE

COMP. CAPACITOR B

COMP.A

RELAY

A

BLACK

RED

BLACK

BLUE

OVERLOAD

BLACK

WHITE

UNIT B2UNIT B1

OUTDOOR UNIT

FAN CAPACITOR

YELLOW

RED

YELLOW

S

R

COMP.B

C

BLACK

RELAY

PROTECTOR

BLACK

B

YELLOW

PINK

2 31(N)2 31(N)2 31(N) N L

POWER

1

CN2

2

WHITE

BLACK BLACK

TERMINAL

1 2 3 4

1

CN4 CN3

2

1

CN5CN9

2

1 2 3 4

BLACK

GREEN

YELLOW

4 3 2 1

BLACK WHITE RED BLUE

CN10

SOLENOID

SV

COIL B1

SOLENOID

SV

COIL B2

THERMISTOR A (DIS.TEMP.) THERMISTOR B (DIS.TEMP.)

PRINTED CIRCUIT BOARD

FUSE F1 T6 . 3A250V

W 4

W 3

1

WHITE

2

1

WHITE

2 3

WHITE

4

BLACK

1

WHITEWHITE

CN1 CN14 CN15

2

FAN MOTOR

FM

E 1

GREEN

THERMAL FUSE 103

TERMINAL

UNIT A

(N)

2 3

1

THERMAL FUSE 103

TERMINAL

UNIT B1

(N)

2 3

1

THERMAL FUSE 103

TERMINAL

UNIT B2

(N)

2 3

1

52006.03.16

INDOOR PCB CIRCUIT DIAGRAM

Model : ASH9FMBD

POWER TRANSFORMER

UL1015 AWG22

GREEN

EZ-030HSE-T

PRIMARY

W101 E

GREEN

F101 T 3.15A 250V

TERMINAL BOARD

TERMAL FUSE

SECONDARY

CN102-3 PURPLE

CN102-1 PURPLE

CN104-1 RED

CN104-2 RED

CN102 B2P3-VH-B

C102 4700P

C103

0.1

VA101 470V

C101 4700P

CN104 B2B-XH-AM

FH102

FH101

W103

BLACK

UL1015 AWG14 BLACK

UL1015 AWG22 WHITE

2

1

TERMAL BOARD

UL1015 AWG18 RED

POWER SOURCE 230V

3

50Hz

GREEN / YELLOW

103

TEMPERATURE FUSE

CN103-1 GRAY

CN103-2 GRAY

POWER SUPPLY PCB EZ-002SWSE-P ( F )

CN103 B2B-XASK-1-A

C104

0.1

R102 1.0K <1/2W>

+

C109 10/ 50V

FAN CAPACITOR

VA102 470V

12V

Q101 2SD880

+

D104 MTZJ15B

D102 1SR139

L101

SS11V-10062

D101 S1VB20

R101 10K <1/4W>

C105 2200 /35V

C110

7.0

CN101 B3P5-VH-B

SSR101 G3MC-201PL-VD DC12V

12V

D103 1SR139

C106 2200 /25V

3

4

K103 G4A-1A-E-PS

+

I C101 7805

I O

G

2

1

C108

0.1 <F>

CN101-1

CN101-3

CN101-5

12V

BLACK

YELLOW

WHITE

FAN MOTOR

12V5V

CN105 PHR-8

F M

CN105-1

CN105-2

CN105-3

CN105-4

CN105-5

CN105-6

CN105-7

CN105-8

UL1061 AWG26 x 8

CN7-1

CN7-2

CN7-3

BLUE

WHITE

CONTROLLER PCB ASSEMBLY ( MAIN PCB )

EZ-00205WSE-C ( F )

RED

WHITE

BLACK

CN6-1

CN6-2

CN6-3

CN6-4

CN6-5

CN6-6

CN6-7

CN6-8

CN8 S3P-VH

5V

R1 10K <1/10W>

C1 0.1 <F>

ROOM TEMPERATURE CORRECTION 1 ( HEATING OPERATION )

ROOM TEMPERATURE CORRECTION 2 ( HEATING OPERATION )

AUTO RESTART

REMOTE CONTROL UNIT CUSTOM CODE

12V

R6 1.0K <1/8W>

C8

0.1 <F>

12 5

CN6 B8B-PH-K-S

C11

0.1 <F>

5V

BZ1

12V

PKM13EPY-4000

B Z

R14 10K <1/10W>

JP1 JP2 JP3 JP4

Q1 DTC124EUA

1

3

2

1

R7 4.7K <1/8W>

11

I C4-5 uLN2003

10 7

I C2 BR93LC46

CS

8

VCC D0

4

SK

6

TEST

D1

5

GND

NC

EEPROM

Q3 DTC124EUA

1 2

3 7

R2 1.0K <1/10W>

5V

3

2

I C4-6 uLN2003

6

I C4-7 uLN2003

Q2 DTC124EUA

3

2

C2 0.1 <F>

R3, R34, R5, R35 10K <1/10W> x 4

C7 10/25V

5V

R8 10K <1/10W>

C9 0.01 <R>

R33 10K <1/10W>

uPD780024ASGB-X02-8ET-A

1

+

5V

R12 10K <1/10W>

I C 1

44

P75

29

XT2

P25

RESET

P10

P03

P34

P44

P41

P40

32

2

19

8

P57

28

24

P11

25

13

P36

38

12

P35

11

35

P00

P56

7

6

P55

P54

5

52

P47

51

P46

P45

50

49

48

P43

47

P42

46

45

X1 CST8.38MHz

R30 1.0K <1/10W>

C25

0.1 <F>

C22

0.1 <F>

C21

0.1 <F>

C16 1000P <R>

1

3

P02

37

P20

14

15

P21

16

P22

43

P74

27

AVD0

10

VDD0

20

VDD1

26

AVREF

23

P12

22

P13

30

XT1

9

VSS0

34

VSS1

21

AVSS

4

P53

36

P01

1

P50

2

P51

3

P52

42

P73

41

P72

40

P71 P70

39

17

P23 P24

18

31

I C

X1 X2

33

R25 390 <1/10W>

R24 390 <1/10W>

12V

9

2

4

5V

R29 10K <1/10W>

R28 10K <1/10W>

5V

R20 - R23 10K <1/10W> x 4

5V

R19 10K <1/10W>

16

15

14

13

8

5V

5

RESET 4

3

I C3 BD4742G

R18 47 <1/10W>

I C4-1 uLN2003

I C4-2 uLN2003 I C4-3 uLN2003 I C4-4 uLN2003

MANUAL AUTO

SW1

SWITCH

C27

2

0.1

1

<F>

R27 10K <1/10W> (1%)

R26 49.9K <1/10W> (1%)

R17 330 <1/10W>

R16 330 <1/10W> R15 330 <1/10W>

12V

5V

CN2 150-103-86176

CN3 150-503-96077

CN1 B5P-SHF-1AA

CN4 B6B-PH-K-S

5V

CN5 53325-0510

CN2-1

CN2-2

CN3-1

CN3-2

CN1-1

CN1-2

CN1-3

CN1-4

CN1-5

CN4-1

CN4-4

CN4-5

CN4-6

UL1061 AWG26 x 6

CN5-6

CN5-7

CN5-8

CN5-9

CN5-10

UL1061 AWG26 x 5

TEST

RED

WHITE

BLACK

GRAY

RED

ORANGE

YELLOW

PINK

BLUE

ROOM TEMPERATURE THERMISTOR

PIPE TEMPERATURE THERMISTOR

INDICATOR PCB EZ-002SWSE-D (F)

R201 47 <1/4W>

1

2

3

C202

0.1 <F>

OPERATE

4

TIMER

5

SWING

6

CN201

M

X201 GP1UM261RK

+

DATA

C201 47/ 10V

D201 SLR-325<VC>

D202 SLR-325<MC>

D203 SLR-325<DC>

LOUVER

VCC

GND

5V

RED

GREEN

ORANGE

OUTDOOR UNIT

TO EARTH TERMINAL STRIP

62006.03.16