Fujitsu AUXG24LRLB, AUXG18LRLB, UTG-UKYA-W, AOYG18LBCA, AOYG24LBCA Service Manual
SPLIT TYPE
AIR CONDITIONER
CASSETTE TYPE (50Hz)
Indoor unit Outdoor unit
AUXG18LRLB
AUXG24LRLB
UTG-UKYA-W
AOYG18LBCA
AOYG24LBCA
CONTENTS
SPECIFICATIONS. . . . . . . . . . . . . . . . . . . .
1
DIMENSIONS . . . . . . . . . . . . . . . . . . . . . . .
2
REFRIGERANT SYSTEM DIAGRAM. . . . .
4
CIRCUIT DIAGRAM . . . . . . . . . . . . . . . . . .
5
ERROR DETECTION . . . . . . . . . . . . . . . .
6
PCB CIRCUIT DIAGRAM. . . . . . . . . . . . . .
8
. . . . . . . . . . . . . .
14
PARTS (OUTDOOR UNIT)
PARTS (INDOOR UNIT)
. . . . . . .
10
PARTS (DECORATION PANEL)
. . . . . . . . . . . .
19
ACCESSORIES . . . . . . . . . . . . . . . . . . . .
22
INDOOR UNIT H x W x D
H x W x D
H x W x D
OUTDOOR UNIT
DIMENSIONS
INDOOR UNIT
DECORATION PANEL
DECORATION PANEL
Net / Shipping
Net / Shipping
Net / Shipping
OUTDOOR UNIT
WEIGHT
POWER SOURCE
OPERATING CURRENT
OPERATING CURRENT
CoolingHeating
POWER CONSUMPTION
POWER CONSUMPTION
EER
COP
DEHUMIDIFICATION
TYPE
Cooling & Heating
INDOOR UNIT
DECORATION PANEL UTG-UKYA-W
AUXG18LRLB
OUTDOOR UNIT
AOYG18LBCA
CAPACITY
CAPACITY
246 x 840 x 840 mm
53 x 950 x 950 mm
24 kg / 29 kg
6.0 kg / 10.5 kg
6.2 A
6.6 A
1.42 kW
1.50 kW
3.66 kW/kW
4.00 kW/kW
2.2 L/h
MAXIMUM CURRENT
MAXIMUM CURRENT
13.5 A
10.0 A
230 V, 50 Hz, Single phase
5.20 kW
6.0 kW
AUXG24LRLB
AOYG24LBCA
9.5 A
9.6 A
2.16 kW
2.18 kW
3.15 kW/kW
3.58 kW/kW
2.7 L/h
18.5 A
13.5 A
6.80 kW
7.8 kW
FAN MOTOR
INDOOR UNIT
OUTDOOR UNIT
MFF-T80VA2F
FAN REVOLUTION
High
INDOOR
UNIT
Medium
Low
400 rpm
360 rpm
340 rpm
Quiet
300 rpm
780 rpm
870 rpm
ELECTRICAL DATA
COMPRESSOR TYPE
DISCRIMINATION
WEIGHT (with oil)
PRECHARGED REFRIGERANT
REFRIGERANT TYPE
R410A
COMPRESSOR AND REFRIGERANT
2015.12.11 1
SPECIFICATIONS
MAXIMUM PIPING HEIGHT DIFFERENCE
Piping length
FULL CHARGE
ADDITIONAL CHARGE
AIR CIRCULATION
High
INDOOR
UNIT
Medium
Low
Cooling
Heating
1,050 m3/h
960 m3/h
900 m3/h
Quiet
780 m3/h
OUTDOOR
UNIT
Cooling
Heating
OUTDOOR
UNIT
1,900 m3/h 2,460 m3/h
1,700 m3/h
NOISE LEVEL
High
INDOOR
UNIT
Medium
Low
Cooling
Heating
33 dB
32 dB
31 dB
Quiet 28 dB
OUTDOOR
UNIT
51 dB 55 dB
50 dB
430 rpm
400 rpm
360 rpm
330 rpm
1,050 rpm
1,100 rpm
1,150 m3/h
1,050 m3/h
980 m3/h
870 m3/h
2,340 m3/h
35 dB
33 dB
32 dB
29 dB
56 dB
MFE-71TVAL
1,800 g
1,800 g
20 m
620 x 790 x 290 mm
41 kg / 45 kg
15 m
20 m 1,900 g
25 m 2,000 g
30 m 2,100 g
20 g/m
Hermetic type,
6 pole, 3 phase,
DC inverter motor, Rotary
N-SF17ND1A
10.6 kg
2015.11.25 2
950 mm 53 mm
950 mm
840 mm
840 mm246 mm
Drain pipe diameter
Inside : 20 mm
Outside : 26 mm
DIMENSIONS
INDOOR UNIT DECORATION PANEL
2015.12.02 3
19.5
290 mm
790 mm
20
540 mm
620 mm
62
OUTDOOR UNIT
REFRIGERANT
SYSTEM DIAGRAM
2-way valve
Strainer
Strainer
3-way valve
Muffler
Muffler
Pressure
switch
4-Way valve
Expansion valve
Heat exchanger
(Indoor unit)
Heat exchanger
(Outdoor unit)
Sub-accumulator
Compressor
Cooling flow
Heating flow
Refrigerant pipe diameter
[18]
Liquid : 1/4” (6.35 mm)
Gas : 1/2” (12.7 mm)
[24]
Liquid : 1/4” (6.35 mm)
Gas : 5/8” (15.88 mm)
42015.11.24
Gray
Red
Orange
Yellow
Green
Black
Black
Red
Red
Red
White
White
White
Purple
Blue
Green
Yellow
Orange
Red
Gray
Black
Black
Black
White
Red
Blue
Orange
Red
Brown
Brown
Orange
Yellow
Gray
White
Orange
Brown
Orange
Green
Gray
Yellow
Yellow
Gray
Blue
Brown
Orange
Yellow
Gray
Blue
Red
Black
White
Black
White
Red
White
White
White
White
White
White
White
White
White
White
White
White
White
Yellow
Brown
White
Black
Red
Green
1 3 5 7 9 11 13151719 2 4 6 8 1012 14161820
1 3 5 7 9 11 13151719 2 4 6 8 1012 14161820
1 2 3 4 5 6 7 8 9 1011 12
1 2 3 4 5
1 2 3 4 5 6 7 8 9 1011
1 2 3 4 5 6 7 8 9 1011
1 2 3 4 5
1 2 3 4 5
1 2
1 2
1 2 3
1 2 3
1 2 3 4
1 2 3 4
1 2 3 4 5 6 7 8 9
1 2 3 4 5 6 7 8 9
1 2 3 4 5 6 7 8 9
1 2 3
1 2 3
1 2 3
1 2 3
1 2 3
1 2 3
1 2
1 2
1 2 3 4 5
1 2 3 4 5
1
2
3
4
5
6
7
8
9
10
11
12
1
2
3
4
5
6
7
8
9
10
11
12
1
2
3
4
CN8
TMB1
1
2
3
4
1
2
3
4
1
2
3
4
1
2
3
4
5
6
7
8
9
10
1
2
3
4
5
6
7
8
9
10
1
2
3
4
1
2
3
4
1
2
3
4
5
6
7
8
9
10
1
2
3
4
5
6
7
8
9
10
1
2
3
4
1
2
3
4
1
2
3
4
5
6
7
1
2
3
4
5
6
7
1 2 3
1 2 3
1 2 3 4 5 1 2 3 4 5 1 2 3 4 5 1 2 3 4 5
CN9
CN48
CN71
CN14 CN46 CN47 CN37 CN67
W100
CN73
CN32CN8
CN72
TMA1
CN9
CN2
CN1
CN54 CN55
CN65
CN301
CN370
CN304
CN303
W303
F300
Fuse
3.15A
250V
Y1
Y2
Y3
Y1
Y2
Y3
1 2
1 2 3 4 5 61
2 C
Thermistor
( Pipe temp. )
Thermistor
( Room temp. )
( Test )
Main PCB
M
S
M M
M
FMFan motor
Power supply
PCB
1 2 3
Float switch
Step motor
P. E. Sensor
(Option)
Ex. in and out board
( To Ex.in ) ( To Ex.out )
( Test )
Terminal
( 3-Wire type )
To Remote control
( 2-Wire type )
Ex.in
Terminal
( Option )
Wire for
external
output
Trans board
non-polar 2-Wire
DC Drain pump
motor
M
Indicator PCB
( Option )
Black
Black
Brown or Blue
Red
Black
White
Yellow
Red
Red
Red
White
Yellow
Orange
Blue
Black
Black
Black
Black
Black
Black
Green
Black
Black
Black
White
Red
Black
White
Red
Black
White
Green
1 2 3 54 6 7
1 2 3
1 2 3
1 2 3 4
1 2 3 4
1 1
2 2
1 2 3 54
1 2 3 54
1 2
1 2
1 2 3 54 6 7
1 2 3 54 6 7
1 2 3
1 2 3
R
T
S
CN40 CN74 CN800
CN600
CN73
CN70
CN71
W3
CN30
W101
W102
W4
W1
W2
W7 U
W8 V
W9 W
Fan motor
Expansion
valve coil
High pressure
switch
Thermistor
( Comp. temp. )
Compressor
4-way valve coil
Terminal
Earth
Power
source
1
23L
N
Main PCB
Thermistor
( Pipe temp. )
Thermistor
( Discarge temp. )
Thermistor
( Outdoor temp. )
CM
FM
PMV
4WV
OUTDOOR UNIT
INDOOR UNIT
CIRCUIT DIAGRAM
2015.11.20 5
UL1015 AWG22
RED
BLACK
WHITE
YELLOW
BROWN
RED
RED
BLACK
BLACK
UL1007 AWG20
WHITE
RED
UL1007 AWG20
BLACK
BLACK
UL1061 AWG26
UL1430 AWG26
RED
BROWN
ORANGE
YELLOW
GRAY
WHITE
BROWN
ORANGE
YELLOW
GRAY
BLUE
BROWN
ORANGE
YELLOW
GRAY
GREEN
BROWN
ORANGE
YELLOW
GRAY
BLUE
PURPLE
WHITE
BLACK
WHITE
UL1061 AWG26
GRAY
RED
ORANGE
YELLOW
GREEN
BLUE
RED
BLACK
GRAY
RED
ORANGE
YELLOW
UL1430 AWG26
RED
UL1430 AWG22
WHITE
BLACK
WHITE
UL1061 AWG26
WHITE
WHITE
WHITE
WHITE
WHITE
WHITE
WHITE
WHITE
WHITE
UL1061 AWG22
WHITE
WHITE
WHITE
WHITE
UL1007 AWG22
UL1007 AWG22
RED
BLACK
BLUE
ORANGE
UL1015
AWG20
GREEN
TERMINAL
W303
EARTH
F300
3.15A
AC250V
UL1015
AWG20
GREEN
W100
EARTH
TERMINAL
CN37-1
CN37-3
CN37-5
CN37-7
CN37-9
CN37-11
CN37-13
CN37-15
CN37-17
CN37-19
CN37-2
CN37-4
CN37-6
CN37-8
CN37-10
CN37-12
CN37-14
CN37-16
CN37-18
CN37-20
CN67-1
CN67-2
CN67-3
CN67-4
CN67-5
CN48-1
CN48-2
CN48-3
CN48-4
CN48-5
CN48-6
CN48-7
CN48-8
CN48-9
CN65-1
CN65-2
CN65-3
CN65-4
CN72-1
CN72-2
CN72-3
CN72-4
CN72-5
CN72-6
CN72-7
CN72-8
CN72-9
CN72-10
CN72-11
CN47-1
CN47-2
CN73-1
CN73-2
CN73-3
CN73-4
CN73-5
CN73-6
CN73-7
CN73-8
CN73-9
CN73-10
CN73-11
CN73-12
CN55-1
CN55-2
CN55-3
CN55-4
CN55-5
CN55-6
CN55-7
CN55-8
CN55-9
CN55-10
CN54-1
CN54-2
CN54-3
CN54-4
CN1-1
CN1-2
CN1-3
CN1-4
CN1-5
CN1-6
CN1-7
CN1-8
CN1-9
CN8-1
CN8-2
CN8-3
CN8-4
CN9-1
CN9-2
CN9-3
CN9-4
CN9-5
CN9-6
CN9-7
CN9-8
CN9-9
CN9-10
CN9-11
CN9-12
CN370-1
CN370-4
CN370-5
CN370-6
CN370-7
CN1-1
CN1-2
CN1-3
CN1-4
CN1-5
CN2-1
CN2-2
CN2-3
CN2-4
CN2-5
CN2-6
CN2-7
CN2-8
CN2-9
CN2-10
CN2-11
CN71-1
CN71-2
CN71-3
CN71-4
CN9-1
CN9-2
CN9-3
CN32-1
CN32-2
CN32-3
CN8-1
CN8-2
CN46-1
CN46-2
CN46-3
CN14-1
CN14-2
CN14-3
CN304-1
CN304-2
CN304-3
CN304-4
CN304-5
CN304-6
CN304-7
CN304-8
CN304-9
CN304-10
CN303-1
CN303-2
CN303-3
CN303-4
CN301-1
CN301-3
CN301-5
CN14
B03B-XNISK-A-1
WHITE
CN46
B3B-XH-AM
WHITE
CN72
11R-JE
WHITE
CN47
B02B-PASK-1
WHITE
CN73
B12B-PASK-1
WHITE
CN55
B10B-PLIRK-1
RED
CN54
B04B-XNISK-A-1
WHITE
CN370
B5 ( 7-2.3 ) B-XASK-1-A
WHITE
CN8
B02B-XASK-1-A
WHITE
CN32
B03B-PASK-1
WHITE
CN71
B04B-XASK-1-A
WHITE
CN9
B03B-XARK-1-A
RED
CN37
SZW15-20WV-ET
WHITE
CN67
B05B-PASK-1
WHITE
CN48
B09B-PASK-1
WHITE
CN65
B04B-PASK-1
WHITE
CN304
B10B-PLIRK-1
RED
CN303
B04B-XNISK-A-1
WHITE
CN2
11PSL-JE
WHITE
CN1
SM05B-SRSS-TB
WHITE
CN301
B3 ( 5.0 ) B-XASK-1-A
WHITE
CN1
S09B-PASK-2
WHITE
CN8
B04B-PASK-1
WHITE
CN9
B12B-PASK-1
WHITE
TMB1
HP-T5338-1-6P
BLACK
TMA1
HP-T5338-1-3P
BLACK
SIGNAL1
SIGNAL2
COM
1-1
1-2
1-3
1-4
1-5
1-6
EMI FILTER
ZCAT3035-1330
3 TURNS
DC FAN MOTOR
DC DRAIN PUMP MOTOR
FLOAT SWITCH
THERMISTOR ( ROOM TEMP. )
THERMISTOR ( PIPE TEMP. )
PYROELECTRIC SENSOR
(Option)
REMOTE
CONTROL
( 3 WIRE )
3
2
1
Y1
Y2
Y3
Y1
Y2
Y3
1
2
M
INDOOR UNIT
PCB CIRCUIT DIAGRAM
DC5V
DC12V
DC5V
DC12V
DC5V
DC12V-2
DC5V
DC12V
DC12V-2
DC5V
DC12V
DC15V
DC340V
DC5V
DC5V
DC5V
DC12V
DC12V
EMI FILTER
ZCAT1518-0730
1 TURN
EMI FILTER
ZCAT1518-0730
2 TURNS
TEST
AC IN
INDICATOR PCB
K14VE-1400HSE-D0
( OPTION )
EXTERNAL IN & OUT PCB
EX. SIGNAL. OUT
EX. SIGNAL. IN
REMOTE
CONTROL
( 2 WIRE )
EXTERNAL INPUT
OPTION ( 3 WIRE TYPE )
OUTDOOR UNIT
POWER SOURCE
AC230V
50Hz
POWER SUPPLY PCB
K14UZ-1400HSE-P0
MAIN PCB
AUXG18LRLB : K14UY-1509HSE-C1
AUXG24LRLB : K14UY-150AHSE-C1
FLASH
COMMUNICATION PCB
( NON - POLAR 2-WIRE )
K14VS-1400HSE-CA0
FM
P.E.
SENSOR
STEP MOTOR ( LOUVER 1 )
STEP MOTOR ( LOUVER 2 )
STEP MOTOR ( LOUVER 4 )
STEP MOTOR ( LOUVER 3 )
M
M
M
M
CN32
Thermistor Characteristics.
Thermistor ( Pipe - mid. temp. )
176.0 k
62.9 k
39.6 k
1.1 V
2.2 V 2.8 V
(20 ) (30 )
( 0 )
Thermistor
Temperature
CN8
Thermistor Characteristics.
Thermistor ( Room temp. )
33.6 k
12.5 k
8.0 k
1.1 V
2.2 V 2.8 V
(20 ) (30 )
( 0 )
Thermistor
Temperature
CN370 DC Fan motor
1
2
Pin No.
Terminal
code
Vm
Function of terminal
Motor power voltage input
Lead wire
color
Red
3
4
5
6
7
GND
Vcc
Vsp
FG
Revolution pulse output
Speed control voltage input
Control power voltage input
GND
Black
White
Yellow
Brown
CONTROL UNIT
AUXG18LRLB : EZ-015WHSE
AUXG24LRLB : EZ-015YHSE
2015.12.01 6
OPTION UNIT
( WIRE FOR EXTERNAL OUTPUT )
B
B
B
B
B
B
B
A
B
B
B
B
DC12V-3
2 WIRE TYPE
1
2
3
4
5
6
7
1
2
3
1
2
3
4
1
2
3
4
5
6
7
1
2
3
4
5
1
2
3
1
2
1
2
W3
B
W2
B
W1
B
W4
B
W102
B
W101
B
W7
B
U
W8
B
V
W9
B
W
UL3271
AWG16
RED
UL3271
AWG16
WHITE
UL3271
AWG16
BLACK
BLACK
BLACK
COMPRESSOR
DC FAN MOTOR
EXPANSION VALVE COIL
THERMISTOR ( COMPRESSOR TEMP. )
PRESSURE SWITCH
RED
BLACK
WHITE
YELLOW
BROWN or BLUE
RED
BLUE
ORANGE
YELLOW
WHITE
BLACK
BLACK
RED
RED
UL1015
AWG18
BLACK
UL1015
AWG18
WHITE
UL1015
AWG20
RED
UL1015
AWG14
BLACK
UL1015
AWG14
WHITE
UL1015
AWG16
GREEN
BLACK
BLACK
BLACK
BLACK
BLACK
BLACK
1
2
3
4
5
L
N
SERIAL
TO I NDOOR UNIT
EARTH
POWER SOURCE
AC230V
50Hz
TERMINAL
FRAME FRAME
WIRE w / TERMINAL ( CORE )
1015#22
GREEN
THERMISTOR ( PIPE TEMP. )
THERMISTOR ( DISCHARGE TEMP. )
THERMISTOR ( OUTDOOR TEMP. )
CN71
B04B-PL I RK-1
RED
CN70
B03B-PL I SK-1
WHITE
CN600
B6 ( 7-3 ) B-XN I RK-B-2
RED
CN40
B05B-PL I SK-1
WHITE
CN800
B5 ( 7-2.3 ) B-XASK-1-A
WHITE
CN73
B03B-XN I SK-A-1
WHITE
CN74
1-1871843-2
RED
CN30
2-1747052-3
BLUE
C M
F M
M
EMI FILTER
ZCAT1518-0730
1 TURN
EMI FILTER
ZCAT1518-0730
1 TURN
EMI FILTER
TRCB-25-15-12
1 TURN
EMI FILTER
ZCAT3035-1330
1 TURN
EMI FILTER
TRCB-25-15-12
1 TURN
MAIN PCB
AOYG18LBCA : K11BS-1501HUE-C1
AOYG24LBCA : K11BS-1502HUE-C1
2015.09.15 7
OUTDOOR UNIT
U-V
V-W
U-W
Winding Resistance
0.818
(20 )
CN800 DC FAN MOTOR
1
3
4
5
6
Pin No.
Terminal
code
Vm
GND
Vcc
Vsp
FG
Function of terminal
Revolution pulse output
Speed control voltage input
Control power voltage input
GND
Motor power voltage input
Lead wire
color
Red
Black
White
Yellow
Brown or blue
2
7
1(Red) - 2(Blue)
1(Red) - 3(Orange)
1(Red) - 4(Yellow)
1(Red) - 5(White)
CN40 EXPANSION VALVE COIL
46.0
(20 )
Recommended Drive Condition
Unipolar Drive, 1-2 Phase Excitation.
Coil resistance
4-WAY VALVE COIL
*DC Resistance
2085
(20 )
10%
AC230V
( ON )
DC12V
DC340V
DC15V
CN73
Thermistor Characteristics.
Thermistor ( Compressor temp. )
168.6 k
64.5 k
41.1 k
0.3 V
0.8 V 1.2 V
(20 ) (30 )
( 0 )
Thermistor
Temperature
CN70
Thermistor Characteristics.
Thermistor ( Outdoor temp. )
35.2 k
12.6 k
8.0 k
2.6 V
3.8 V 4.1 V
(20 ) (30 )
( 0 )
Thermistor
Temperature
CN71
Thermistor Characteristics.
Thermistor ( Pipe temp. )
16.1 k
6.0 k
3.8 k
1.1 V
2.2 V 2.8 V
(20 ) (30 )
( 0 )
Thermistor
Temperature
Thermistor ( Discharge temp. )
168.6 k
64.5 k
41.1 k
0.3 V
0.8 V 1.2 V
INVERTER ASSEMBLY
AOYG18LBCA : EZ-015FHUE
AOYG24LBCA : EZ-015GHUE
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