Fujitsu AUY18FBAB, AOY18FNCKL, AOY18UNCKL, AOY18UNCNL, AOY18FNCNL Service Manual

SPLIT TYPE

AIR CONDITIONER

CASSETTE TYPE (50Hz)

CONTENTS

SPECIFICATIONS . . . . . . . . . . . . . . . . . .

1

DIMENSIONS . . . . . . . . . . . . . . . . . . . . .

2

CIRCUIT DIAGRAM

. . .

4

REFRIGERANT SYSTEM DIAGRAM

. . . . . . . . . . . . . . . . .

5

INDOOR PCB CIRCUIT DIAGRAM. . . . .

7

ERROR CONTENTS. . . . . . . . . . . . . . . .

9

DISASSEMBLY ILLUSTRATION. . . . . .

10

PARTS LIST. . . . . . . . . . . . . . . . . . . . . .

18

Indoor unit Outdoor unit

AUY18UBAB AOY18UNCNL

AUY18FBAB AOY18FNCKL

AUY18FBAB AOY18FNCNL

AUY18UBAB AOY18UNCKL

12006.03.08

TYPE

INDOOR UNIT

OUTDOOR UNIT

COOLING CAPACITY

POWER SOURCE

RUNNING CURRENT

INPUT WATTS

E.E.R.

MOISTURE REMOVAL

AIR CIRCULATION-HIGH

ELECTRICAL DATA

FAN MOTOR

DIMENSIONS

COMPRESSOR TYPE

DISCRIMINATION

Hermetic type, Rotary

230 V 50 Hz

DISCRIMINATION

INDOOR
UNIT

HIGH-SPEED

HIGH-SPEED

800 r.p.m.

MFA-18GTT

MED-SPEED

700 r.p.m.

LOW-SPEED

LOW-SPEED

600 r.p.m.

OUTDOOR
UNIT

DISCRIMINATION

INDOOR UNIT

235 x 580 x 580 +70 mm

OUTDOOR UNIT

H x W x D

H x W x D

H x W x D

GRILLE

35 x 650 x 650 mm

WEIGHT

INDOOR UNIT

18 kg / 23 kg

OUTDOOR UNIT

Net / Gross

Net / Gross

Net / Gross

GRILLE

2.2 kg / 4.3 kg

SPECIFICATIONS

COOL

AUY18FBAB

5.00 kW

8.5 A

1.90 kW

2.63 kW/kW

2.1 L/hr

620 m3/hr

47 kg / 51 kg

AOY18FNCKL AOY18FNCNL

5KS225DAC

MFB-24JTBT MFB-24JTS

780 r.p.m.

400 r.p.m.

650 x 830 x 320 mm

8 m

20 m

Pipe Length 7.5 m

10 m

15 m

20 m

ADDITIONAL CHARGE

MAXIMUM PIPE HEIGHT

MAXIMUM PIPE LENGTH

FULL CHARGE

REFRIGERANT CHARGE (R410A)

800 g

850 g

950 g

1,050 g

20 g/m

TYPE

INDOOR UNIT

OUTDOOR UNIT

COOLING CAPACITY

HEATING CAPACITY

POWER SOURCE

RUNNING
CURRENT

COOLING

HEATING

INPUT WATTS

COOLING

HEATING

E.E.R.

COOLING

HEATING

MOISTURE REMOVAL

AIR CIRCULATION-HIGH

ELECTRICAL DATA

FAN MOTOR

DIMENSIONS

COMPRESSOR TYPE

DISCRIMINATION

Hermetic type, Rotary

230 V 50 Hz

DISCRIMINATION

INDOOR
UNIT

HIGH-SPEED

HIGH-SPEED

800 r.p.m.

MED-SPEED

700 r.p.m.

LOW-SPEED

LOW-SPEED

600 r.p.m.

OUTDOOR
UNIT

DISCRIMINATION

INDOOR UNIT

235 x 580 x 580 +70 mm

OUTDOOR UNIT

H x W x D

H x W x D

H x W x D

GRILLE

35 x 650 x 650 mm

WEIGHT

INDOOR UNIT

18 kg / 23 kg

OUTDOOR UNIT

Net / Gross

Net / Gross

Net / Gross

GRILLE

2.2 kg / 4.3 kg

2.1 L/hr

620 m3/hr

COOL & HEAT

AUY18UBAB

AOY18UNCKL AOY18UNCNL

4.85 kW

5.40 kW

8.2 A

9.2 A

1.85 kW

2.00 kW

2.62 kW/kW

2.70 kW/kW

5KS225DAC

MFA-18GTBT

MFB-24JTBS

MFB-24JTBT

780 r.p.m.

400 r.p.m.

650 x 830 x 320 mm

52 kg / 56 kg

8 m

20 m

Pipe Length

7.5 m

10 m

15 m

20 m

ADDITIONAL CHARGE

MAXIMUM PIPE HEIGHT

MAXIMUM PIPE LENGTH

FULL CHARGE

REFRIGERANT CHARGE (R410A)

20 g/m

1,250 g

1,300 g

1,400 g

1,500 g

(unit : mm)

INDOOR UNIT

DIMENSIONS

650

650

22006.03.08

20

235

66

250

440

580

( 650) (Grille measurement)

650

(Hanging bolt position)

400

(Hanging bolt position)

606

580 66

440

35

600

(Ceiling opening measurement)

250

60

86

Drain pipe (I.D. 32)

54

46

131

111

47

(unit : mm)

OUTDOOR UNIT

350

830

650

12

32006.03.07

Models :
AUY18FBAB / AOY18FNCKL
AUY18FBAB / AOY18FNCNL

Models :
AUY18UBAB / AOY18UNCKL
AUY18UBAB / AOY18UNCNL

Refrigerant pipe

12.7mm(1/2")

Refrigerant pipe

6.35mm(1/4")

Charging valve

OUTDOOR UNITINDOOR UNIT

Evaporator

Evaporator

OUTDOOR UNIT

12.7mm(1/2")

6.35mm(1/4")

Charging valve

INDOOR UNIT

REFRIGERANT SYSTEM DIAGRAM

Capillary tube

Compressor

Strainer

Condenser

4-Way
valve

Compressor

Condenser

Distributor

Muffler

Refrigerant pipe

Refrigerant pipe

Capillary tube

Strainer

Strainer

42006.03.07

Model : AUY18FBAB

CIRCUIT DIAGRAM

Models : AOY18FNCKL, AOY18FNCNL

L N 3 4 5

54

61

S

R

C

1(L) 2(N)

THERMISTOR(ROOM TEMP)

COMPRESSOR

FAN MOTOR

MAIN RELAY

TO POWER SUPPLY

TO INDOOR UNIT

COMPRESSOR
CAPACITOR

FAN MOTOR
CAPACITOR

FUSE 5A

INTERNAL
OVERLOAD
PROTECTOR

THERMAL
PROTECTOR

DISPLAY BOARD

CONTROL BOARD

FILTER

BOARD

THERMISTOR(PIPE TEMP)

TERMINAL

STEPPING

MOTOR

M

M

FM

FLOAT

SWITCH

Use T3.15A

­250V

Fuse on F101

FAN

MOTOR

DRAIN PUMP

MOTOR

FAN MOTOR

CAPACITOR

TO OUTDOOR UNIT

WHITE

WHITE

WHITE

WHITE

WHITE

WHITE

WHITE

BLUE

RED

WHITE

WHITE

RED

BROWN
BROWN

BLACK

BLACK

BLACK

BLACK

BLACK

YELLOW

GREEN / YELLOW

YELLOW

YELLOW

ORANGE

RED

BLACK

BLACK

WHITE
BLACK

BLACK

GRAY

GRAY

BLACK

BLACK

BLACK

GRAY

PURPLE

BLUE

WHITE

WHITE

WHITE

YELLOW

ORANGE

RED

BROWN

BLACK

BLACK
BLACK

PURPLE

RED

BROWN

GRAY

GREEN

BLUE

8

7

6

5

432

1

8

7

6

5

432

1

8

7

6

5

43221

1

L

N

2

1

2

1

1 1

1

1

1

1

1

CN5

CN6 CN2 CN4 CN19

CN13CN15CN8CN7

CN10

CN1

CN201

2 2

1

5 4 3

2

(N)

1

(L)

2

2

2

2

3

3

3 34 4

5 3

5

12345

5 6

6 4

3

1

3

1

52006.03.09

Models : AOY18UNCKL, AOY18UNCNL

Model : AUY18UBAB

3 4 5 6

S

R

C

L N 1(L) 2(N)

COMPRESSOR

FAN MOTOR

54

61

MAIN RELAY

TO POWER SUPPLY

TO INDOOR UNIT

COMPRESSOR
CAPACITOR

FAN MOTOR
CAPACITOR

FOUR WAY
VALVE COIL

SV

FUSE 5A

INTERNAL
OVERLOAD
PROTECTOR

THERMAL
PROTECTOR

DISPLAY BOARD

CONTROL BOARD

FILTER

BOARD

THERMISTOR(ROOM TEMP)

THERMISTOR(PIPE TEMP)

TERMINAL

M

M

FM

FLOAT

SWITCH

Use T3.15A

­250V

Fuse on F101

STEPPING

MOTOR

FAN

MOTOR

DRAIN PUMP

MOTOR

FAN MOTOR
CAPACITOR

TO OUTDOOR UNIT

WHITE

WHITE

WHITE

BLUE

RED

WHITE

WHITE

RED

BROWN
BROWN

BLACK

BLACK

BLACK

BLACK

BLACK

BLACK

BLACK

GREEN / YELLOW

BLACK

GRAY

GRAY

BLACK

BLACK

BLACK

BLACK

GRAY

PURPLE

BLUE

WHITE

YELLOW

YELLOW

ORANGE

RED

BROWN

YELLOW

YELLOW

BLACK
BLACK

GRAY

WHITE
BLACK

WHITE

BLACK

GREEN

WHITE

WHITE

YELLOW

ORANGE

RED

RED

PURPLE

PINK

RED

BROWN

BROWN

BLUE

BLUE

8

7

6

5

4

321

8

7

6

5

4

321

8

7

6

5

4

321

2 1

L

N

2

1

2

1

CN5

CN6 CN2 CN19

CN13

CN15CN8CN7

CN10

CN1

CN201

56 4 3

2

(N)

1

(L)

1

2

1
2

1

2

1

3

3

12345

12345 1 2 3 4 5 6

1 2 5 3 6 4 7 8 9

3

1

3

1

62006.03.09