Fujitsu AUY12AGA, AOY12AGAL, AUY14AGA, AOY14AGAL, AUY18AGA Service manual
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SPLIT TYPE
AIR CONDITIONER
CASSETTE
Models
Indoor unit Outdoor unit
type (50Hz)
AUY12AGA AOY12AGAL
AUY12RGA AOY12RGAL
AUG12AGA AOG12AGAL
AUG12RGA AOG12RGAL
AUT12AGA AOT12AGAL
AUT12RGA AOT12RGAL
AUY14AGA AOY14AGAL
AUY14RGA AOY14RGAL
AUG14AGA AOG14AGAL
AUG14RGA AOG14RGAL
AUT14AGA AOT14AGAL
AUT14RGA AOT14RGAL
AUY18AGA AOY18ANCL
AUY18RGA AOY18RNCL
AUG18AGA AOG18ANCL
AUG18RGA AOG18RNCL
AUT18AGA AOT18ANCL
AUT18RGA AOT18RNCL
CONTENTS
SPECIFICATIONS
OUTLINE AND DIMENSIONS
CIRCUIT DIAGRAM
REFRIGERANT SYSTEM DIAGRAM
ERROR CONTENTS
INDOOR PCB CIRCUIT DIAGRAM
DISASSEMBLY ILLUSTRATION
PARTS LIST
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1
3
5
8
10
11
15
24
SPECIFICATIONS
TYPE COOL COOL & HEAT COOL COOL & HEAT COOL COOL & HEAT
INDOOR UNIT
OUTDOOR UNIT
COOLING CAPACITY (kW) 3.65 - 3.70 3.60 - 3.65 4.00 - 4.10 3.90 - 4.00 4.95 - 5.10 4.85 - 5.00
HEATING CAPACITY (kW) --------- 4.00 - 4.10 --------- 4.50 - 4.70 --------- 5.30 - 5.45
ELECTRICAL DATA
POWER SOURCE (V) 220 - 240V
FREQUENCY (Hz) 50
RUNNING CURRENT (A)
INPUT WATTS (kW)
E.E.R. (kW/kW)
STARTING CURRENT (A) 29 29 41 41 42 42
MOISTURE REMOVAL (R /hr) 1.6 1.6 1.8 1.8 2.1 2.1
AIR CIRCULATION-Hi (m3/hr) 550 550 550 550 650 650
REFRIGERANT R-22 (g) 950 950 1,000 950 1,450 1,600
COOLING 5.8 - 5.5 5.9 - 5.5 7.4 - 7.4 7.4 - 7.4 8.7 - 8.5 8.2 - 8.0
HEATING --------- 5.8 - 5.5 --------- 7.4 - 7.4 ---------
COOLING 1.27 - 1.30 1.27 - 1.30 1.55 - 1.60 1.55 - 1.60 1.90 - 2.00 1.80 - 1.90
HEATING --------- 1.25 - 1.28 --------- 1.55 - 1.65 --------- 1.90 - 2.00
COOLING 2.87 - 2.85 2.83 - 2.81 2.58 - 2.56 2.52 - 2.50 2.61 - 2.55 2.69 - 2.68
HEATING --------- 3.20 - 3.20 --------- 2.90 - 2.85 --------- 2.79 - 2.73
AUY12AGA AUY12RGA AUY14AGA AUY14RGA AUY18AGA AUY18RGA
AUG12AGA AUG12RGA AUG14AGA AUG14RGA AUG18AGA AUG18RGA
AOG12AGAL AOG12RGAL AOG14AGAL AOG14RGAL AOG18ANCL AOG18RNCL
AOY12AGAL AOY12RGAL AOY14AGAL AOY14RGAL AOY18ANCL AOY18RNCL
8.4 - 8.5
COMPRESSOR
TYPE Hermetic type
DISCRIMINATION
POWER SOURCE
QJ236PD24B QJ282PC24A 2JS318D5BA02
220 - 240V 50Hz 220 - 240V 50Hz 220 - 240V 50Hz
FAN MOTOR
POWER SOURCE (V) 240
INDOOR UNIT
OUTDOOR UNIT
DISCRIMINATION MFA-14GTT MFA-18GTT
HI-SPEED (r.p.m.) 750 750 820
MED-SPEED (r.p.m.) 670 670 740
LO-SPEED (r.p.m.) 590 590 620
DISCRIMINATION
HI / LO (r.p.m.) 580 / 280 580 / 280 740 / 280
MFA-14GTT
MFB-14DTT MFB-14DTT MFB-252TAT
DIMENSIONS
INDOOR UNIT 235 x 580 x 580 + 70
OUTDOOR UNIT H x W x D
GRILLE 35 x 650 x 650
H x W x D
H x W x D
(mm)
(mm)
(mm)
643 x 840 x 336
WEIGHT
INDOOR UNIT 18 / 23
OUTDOOR UNIT GROSS / NET
GRILLE 2.2 / 4.3
GROSS / NET
GROSS / NET
(kg)
(kg)
(kg)
51 / 59 52 / 60 51 / 59 52 / 60 59 / 67 68 / 76
2003.06.25
ADDITIONAL REFRIGERANT CHARGE
PIPE LENGTH
FULLCHARGE AMOUNT
Additional refrigerant
5 m (16 ft)
10 m (33 ft)
15 m (49 ft)
20 m (66 ft)
g / m (oz. / ft)
950 g (33.5 oz)
1,000 g (35.3 oz)
1,050 g (37.0 oz)
1,110 g (38.8 oz)
10 (0.35)
1,000 g (35.3 oz)
1,075 g (37.9 oz)
1,150 g (40.6 oz)
1,225 g (43.2 oz)
15 (0.53)
1
1,000 g (35.3 oz)
1,050 g (37.0 oz)
1,100 g (38.8 oz)
1,150 g (40.6 oz)
10 (0.35)
1,000 g (35.3 oz)
1,075 g (37.9 oz)
1,150 g (40.6 oz)
1,225 g (43.2 oz)
15 (0.53)
1,170 g (41.3 oz)
1,245 g (43.9 oz)
1,320 g (46.6 oz)
1,395 g (49.2 oz)
15 (0.53)
1,800 g (63.5 oz)
1,950 g (68.8 oz)
2,100 g (74.1 oz)
2,250 g (79.4 oz)
30 (1.06)
TYPE COOL COOL & HEAT COOL COOL & HEAT COOL COOL & HEAT
INDOOR UNIT
OUTDOOR UNIT
COOLING CAPACITY [W(A)] 3,700 3,650 4,100 4,000 5,100 5,000
HEATING CAPACITY [W(A)] --------- 4,100 --------- 4,700 --------- 5,450
AUT12AGA AUT12RGA AUT14AGA AUT14RGA AUT18AGA AUT18RGA
AOT12AGAL AOT12RGAL AOT14AGAL AOT14RGAL AOT18ANCL AOT18RNCL
ELECTRICAL DATA
POWER SOURCE (V) 240 - (220)
FREQUENCY (Hz) 50
RUNNING CURRENT (A)
INPUT WATTS (W)
E.E.R. (kW/kW)
STARTING CURRENT (A) 29 29 41 41 42 42
MOISTURE REMOVAL (R /hr) 1.6 1.6 1.8 1.8 2.1 2.1
AIR CIRCULATION-Hi (m3/hr) 550 550 550 550 650 650
REFRIGERANT R-22 (g) 950 950 1,000 950 1,450 1,600
COOLING
HEATING ---------
COOLING 1,300 1,300 1,600 1,600 2,000 1,900
HEATING --------- 1,280 --------- 1,650 --------- 2,000
COOLING 2.85 2.81 2.56 2.50 2.55 2.63
HEATING --------- 3.20 --------- 2.85 --------- 2.73
5.5 5.5 7.4 7.4
5.5
---------
7.4
8.5 8.0
---------
8.5
COMPRESSOR
TYPE Hermetic type
DISCRIMINATION
POWER SOURCE
QJ236PD24B QJ282PC24A 2JS318D5BA02
240 - (220) 50Hz 240 - (220) 50Hz 240 - (220) 50Hz
FAN MOTOR
POWER SOURCE (V) 240
MFA-14GTT MFA-18GTT
MFB-14DTT MFB-252TAT
INDOOR UNIT
OUTDOOR UNIT
DISCRIMINATION
HI-SPEED (r.p.m.) 750 750 820
MED-SPEED (r.p.m.) 670 670 740
LO-SPEED
DISCRIMINATION MFB-14DTT
HI / LO (r.p.m.) 580 / 280 580 / 280 740 / 280
(r.p.m.)
MFA-14GTT
590 590 620
DIMENSIONS
INDOOR UNIT 235 x 580 x 580 + 70
OUTDOOR UNIT H x W x D (mm)
GRILLE 35 x 650 x 650
H x W x D (mm)
643 x 840 x 336
H x W x D (mm)
WEIGHT
INDOOR UNIT
OUTDOOR UNIT GROSS / NET
GRILLE
GROSS / NET
GROSS / NET
(kg)
(kg)
(kg)
18 / 23
51 / 59 52 / 60 51 / 59 52 / 60 66 / 73 68 / 76
2.2 / 4.3
ADDITIONAL REFRIGERANT CHARGE
PIPE LENGTH
FULLCHARGE AMOUNT
Additional refrigerant
5 m (16 ft)
10 m (33 ft)
15 m (49 ft)
20 m (66 ft)
g / m (oz. / ft)
950 g (33.5 oz)
1,000 g (35.3 oz)
1,050 g (37.0 oz)
1,110 g (38.8 oz)
10 (0.35)
1,000 g (35.3 oz)
1,075 g (37.9 oz)
1,150 g (40.6 oz)
1,225 g (43.2 oz)
15 (0.53)
1,000 g (35.3 oz)
1,050 g (37.0 oz)
1,100 g (38.8 oz)
1,150 g (40.6 oz)
10 (0.35)
1,000 g (35.3 oz)
1,075 g (37.9 oz)
1,150 g (40.6 oz)
1,225 g (43.2 oz)
15 (0.53)
1,170 g (41.3 oz)
1,245 g (43.9 oz)
1,320 g (46.6 oz)
1,395 g (49.2 oz)
15 (0.53)
1,800 g (63.5 oz)
1,950 g (68.8 oz)
2,100 g (74.1 oz)
2,250 g (79.4 oz)
30 (1.06)
2003.06.25
2
2003.06.25
- 3 -
OUTLINE AND DIMENSIONS
(unit : mm)
INDOOR UNIT
35
20
650
235
440
580 66
580650
250
( 650) (Grille measurement)
(Hanging bolt position)
606
(Hanging bolt position)
650
400
66
440
131
111
47
46
86
60
600
(Ceiling opening measurement)
Drain pipe (I.D. ø32)
250
54
2003.06.25
- 4 -
(unit : mm)
OUTDOOR UNIT
840
804
333
643
25
336
Models : AUY12RGA / AOY12RGAL, AUG12RGA / AOG12RGAL, AUT12RGA / AOT12RGAL,
AUY14RGA / AOY14RGAL, AUG14RGA / AOG14RGAL, AUT14RGA / AOT14RGAL
Models : AUY12AGA / AOY12AGAL, AUG12AGA / AOG12AGAL, AUT12AGA / AOT12AGAL,
AUY14AGA / AOY14AGAL, AUG14AGA / AOG14AGAL, AUT14AGA / AOT14AGAL,
AUY18AGA / AOY18ANCL, AUG18AGA / AOG18ANCL, AUT18AGA / AOT18ANCL
- 8 -
REFRIGERANT SYSTEM DIAGRAM
2003.06.25
OUTDOOR UNITINDOOR UNIT
Refrigerant pipe
6.35mm(1/4")
Evaporator
Refrigerant pipe
12.7mm(1/2")
Charging valve
Capillary tube
Dryer
Condenser
Compressor
Distributor
Evaporator
Refrigerant pipe
6.35mm(1/4")
Refrigerant pipe
12.7mm(1/2")
Charging valve
Dryer
Muffler
Compressor
4-Way
valve
OUTDOOR UNITINDOOR UNIT
Capillary tube
Strainer
Condenser
Strainer
- 9 -
Models : AUY18RGA / AOY18RNCL, AUG18RGA / AOG18RNCL,
AUT18RGA / AOT18RNCL
2003.06.25
OUTDOOR UNITINDOOR UNIT
Distributor
Evaporator
: Flare coupling
Cooling
Heating
Refrigerant pipe
6.35mm(1/4")
Refrigerant pipe
12.7mm(1/2")
Charging valve
Dryer
Accumulator
Muffler
4-Way
valve
Capillary tube
Compressor
Strainer
Condenser
Strainer
2003.06.25
- 5 -
CIRCUIT DIAGRAM
Models : AUY12AGA, AUG12AGA, AUT12AGA,
AUY14AGA, AUG14AGA, AUT14AGA,
AUY18AGA, AUG18AGA, AUT18AGA
Models : AUY12RGA, AUG12RGA, AUT12RGA,
AUY14RGA, AUG14RGA, AUT14RGA,
AUY18RGA, AUG18RGA, AUT18RGA
THERMISTOR (ROOM TEMP.)
THERMISTOR (PIPE TEMP.)
WHITE
5
YELLOW
4
ORANGE
3
M
RED
2
BROWN
1
BLUE
1
PURPLE
2
5
RED
3
WHITE
6
BLACK
4
YELLOW
BLACK
1
YELLOW
BLACK
2
BLACK
WHITE
TO OUTDOOR UNIT
TERMINAL
4
3
2
1
(N)
N
L
POWER SUPPLY
WHITE
STEP
MOTOR
GREEN/YELLOW
FAN
MOTOR
DRAIN PUMP
FM
MOTOR
M
CN201
BLACK
BLACK
GRAY
GRAY
21
CN10
CN5
CN6
CN7
21
1
CN15
CN2
5
4
3
2
1
1
2
3
4
5
6
31
FLOAT
SWITCH
BLACK
BLACK
31
2
CN15
CONTROL BOARD
12
CN4
WHITE
FAN MOTOR
CAPACITOR
1 2 3 4 5 6 7 8
1 2 3 4 5 6 7 8
BROWN
1 2 3 4 5 6 7 8
12
WHITE
DISPLAY BOARD
RED
ORANGE
YELLOW
WHITE
BLUE
CN13
CN12
13
RED
RED
BLACK
BLACK
PURPLE
CN1
WHITE
BLACK
GRAY
2
1
MAIN
RELAY
WHITE
BLACK
Use T3.15A…250V
Fuse on F101
FILTER
BOARD
LN
GREEN
THERMISTOR (ROOM TEMP.)
THERMISTOR (PIPE TEMP.)
WHITE
5
YELLOW
4
TO OUTDOOR UNIT
TERMINAL
5
4
3
2
1
(N)
N
L
POWER SUPPLY
WHITE
MOTOR
FAN
MOTOR
STEP
GREEN/YELLOW
FM
DRAIN PUMP
MOTOR
M
ORANGE
3
M
RED
2
BROWN
1
BLUE
1
PURPLE
2
5
RED
3
WHITE
6
BLACK
4
YELLOW
BLACK
1
YELLOW
BLACK
2
RED
BROWN
BLUE
CN201
BLACK
BLACK
GRAY
GRAY
21
5
CN10
CN15
CN7
4
3
2
1
1
2
CN5
3
4
5
6
CN6
CN2
21
31
FLOAT
SWITCH
BLACK
BLACK
31
21
CN15
CONTROL BOARD
CN4
123
WHITE
FAN MOTOR
CAPACITOR
1 2 3 4 5 6 7 8
1 2 3 4 5 6 7 8
BROWN
1 2 3 4 5 6 7 8
12
WHITE
BLACK
BLACK
DISPLAY BOARD
RED
ORANGE
YELLOW
WHITE
BLUE
PURPLE
CN13
CN12
13
RED
RED
WHITE
BLACK
GRAY
CN1
2
1
MAIN
RELAY
WHITE
BLACK
Use T3.15A…250V
Fuse on F101
FILTER
BOARD
LN
GREEN
Models : AOY12RGAL, AOG12RGAL,
AOT12RGAL
2003.06.25
- 6 -
Models : AOY12AGAL, AOG12AGAL,
AOT12AGAL
OVERLORD
PROTECTOR
COMPRESSOR
C
R
S
RED
BLACK
WHITE
COMPRESSOR
CAPACITOR
WHITE
WHITE
THERMAL
PROTECTOR
BLUE
RED
WHITE
FAN MOTOR
CAPACITOR
FAN MOTOR
BLACK
TERMINAL
OVERLORD
PROTECTOR
COMPRESSOR
C
R
S
RED
BLACK
WHITE
1(N) 2 3 4
COMPRESSOR
CAPACITOR
RED
WHITE
WHITE
TO INDOOR UNIT
THERMAL
PROTECTOR
BLUE
WHITE
FAN MOTOR
CAPACITOR
FAN MOTOR
BLACK
4 WAY VALVE
BLACK
BLACK
SV
TERMINAL
1(N) 2 3 4 5
TO INDOOR UNIT
Models : AOY14RGAL, AOG14RGAL, AOT14RGAL,
AOY18RNCL, AOG18RNCL, AOT18RNCL
Models : AOY14AGAL, AOG14AGAL, AOT14AGAL,
AOY18ANCL, AOG18ANCL, AOT18ANCL
- 7 -
2003.06.25
BLACK
COMPRESSOR C
S
R
INTERNAL
OVERLORD
PROTECTOR
COMPRESSOR
CAPACITOR
WHITE
TERMINAL
RED
WHITE
321(N)
4
RED
YELLOW/GREEN
WHITE
BLUE
FAN MOTOR
THERMAL
PROTECTOR
WHITE
FAN MOTOR
CAPACITOR
TO INDOOR UNIT
BLACK
COMPRESSOR C
INTERNAL
OVERLORD
PROTECTOR
COMPRESSOR
CAPACITOR
WHITE
BLACK
R
WHITE
BLACK
TERMINAL
4 WAY VALVE
SV
RED
FAN MOTOR
4
YELLOW/GREEN
WHITE
BLUE
THERMAL
PROTECTOR
BLACK
WHITE
FAN MOTOR
CAPACITOR
TO INDOOR UNIT
BLACK
S
RED
3 521(N)
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