General AUH24L, AUH24LUAR, AOH24LMAKL Service Manual
INVERTER SPLIT TYPE
AIR CONDITIONER
CASSETTE
Models Indoor unit Outdoor unit
AUH18LBAB AOH18LMAKL
AUH24LUAR AOH24LMAKL
type (50Hz)
2005.07.22
CONTENTS
SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1
DIMENSIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
CIRCUIT DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
REFRIGERANT SYSTEM DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . .8
ERROR CONTENTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10
INDOOR PRINTED CIRCUIT BOARD CIRCUIT DIAGRAM . . . .11
OUTDOOR PRINTED CIRCUIT BOARD CIRCUIT DIAGRAM . .13
DISASSEMBLY ILLUSTRATION . . . . . . . . . . . . . . . . . . . . . . . . . . .14
PARTS LIST . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22
STANDARD ACCESSORIES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25
SPECIFICATIONS
TYPE COOL & HEAT
INDOOR UNIT
OUTDOOR UNIT
COOLING CAPACITY (kW) 4.70 7.10
HEATING CAPACITY (kW) 4.80 7.80
ELECTRICAL DATA
POWER SOURCE (V) 230
FREQUENCY (Hz) 50
RUNNING
CURRENT
INPUT WATTS (kW)
E.E.R. (kW/kW)
STARTING CURRENT (A) 10
MOISTURE REMOVAL ( /hr) 2.0
COOLING 7.2 11.1
(A)
HEATING 7.5 10.5
COOLING 1.65 2.53
HEATING 1.71 2.40
COOLING 2.85 2.81
HEATING 2.81 3.25
AUH18LBAB AUH24LUAR
AOH18LMAKL AOH24LMAKL
COMPRESSOR
TYPE
CODE TNB220FPCM
REFRIGERANT R410A (g) 1,500 1,800
DISCRIMINATION MFA-18GTBT MFA-30JTT
HIGH 800 540
FAN SPEED INDOOR MED 700 480
(r.p.m.) LOW 600 390
OUTDOOR HI / LO 780 / 400
AIR FLOW
DIMENSIONS
H x W x D (mm
WEIGHT
NET / GROSS (kg) OUTDOOR 54 / 58
MAX PIPE LENGTH / HEIGHT (m) 25 / 15
REMOTE CONTROLLER TYPE WIRELESS WIRED
INDOOR 620 1,250
(m3/h)
OUTDOOR 2,800 3,200
INDOOR 235 x 580 x 580 + 70 246 x 830 x 830
) OUTDOOR 650 x 830 x 320
INDOOR 18 / 23 34 / 44
Hermetic type, 4 poles, DC motor,
Twin Rotary
2005.07.22
- 1 -
TYPE COOL & HEAT
INDOOR UNIT
OUTDOOR UNIT
AUH18LBAB AUH24LUAR
AOH18LMAKL AOH24LMAKL
NOISE LEVEL
HI-SPEED (dB) 44
INDOOR UNIT MED-SPEED (dB) 41 43
LO-SPEED (dB) 38 37
OUTDOOR UNIT (dB) COOL 50 / HEAT 52
Pipe Length 7.5 m 1,500 g 1,800 g
FULL CHARGE
AMOUNT
ADDITIONAL REFRIGERANT 20 g / m 40 g / m
When you dismantle indoor units which are installed, take care not to make parts fall down,
especially motors.
10.0 m 1,500 g 1,800 g
15.0 m 1,600 g 2,000 g
20.0 m 1,700g 2,200 g
25.0 m 1,800g 2,400 g
46
COOL 52 / HEAT 54
- 2 -
2005.07.22
20
235
66
250
440
580650
( 650) (Grille measurement)
650
(Hanging bolt position)
400
(Hanging bolt position)
606
650
580 66
440
35
600
(Ceiling opening measurement)
250
60
86
Drain pipe (I.D. 32)
54
46
131
111
47
INDOOR UNIT
DIMENSIONS
Model :
AUH18LBAB
Unit : (mm)
2005.07.22
- 3 -
305.5
298.5
248.5
200
60
(Drain pipe)
100
(Small pipe)
70
(Large pipe)
305.5
298.5
248.5
235
60
(Drain pipe)
Draininside Dia. ø32
outside Dia. ø37
100
(Small pipe)
70
(Large pipe)
940
246
30
940 830
830
Model :
AUH24LUAR
Unit : (mm)
- 4 -
2005.07.22
350
320
830
650
12
Air flow
Bottom
603
343
OUTDOOR UNIT
Models :
AOH18LMAKL
AOH24LMAKL
Unit : (mm)
2005.07.22
- 5 -
CIRCUIT DIAGRAM
Model :
AUH18LBAB
INDICATOR
PCB BOARD
FLOAT
SWITCH
Use T3.15A-250V
Fuse on F101
GRAY
888
PURPLE
77
7
BLUE
66
WHITE
55 5
YELLOW
444
ORANGE
3
3
RED
2
2
BROWN
1
CN201
BLACK
3
BLACK
1
BLACK
BLACK
GRAY
GRAY
3
6
CN13
3
2
11
3
CN15
1
2
CN8
1
CN7
2
1
CN10
33
55
4
2
ORANGE
WHITE
YELLOW
2
332
44
55
M
STEP
MOTOR
PIPE TEMPERATURE THERMISTOR
ROOM TEMPERATURE THERMISTOR
POWER SUPPLY
PCB BOARD
WHITE
BLACK
2
1
CN1
CN6
CONTROLLER
PCB BOARD
CN5
1
2
4
1
RED
BROWN
1
6
WHITE
BLUE
PINK
RED
PURPLE
6
1
FM
GREEN / YELLOW
FAN MOTOR
GREEN
L
N
2
1
BLACK
1
YELLOW
M
DRAIN PUMP
MOTOR
BLACK
YELLOW
789
FAN MOTOR
CAPACITOR
BLACK
2
YELLOW
32
(N)
RED
1
TERMINAL
WHITE
BLACK
Model :
AOH18LMAKL
COMPRESSOR
PRESURE SWITC
COMPRESSOR
THERMAL SWITC
DISCHARGE TEMP. THERMISTOR
PIPE TEMP. THERMISTOR
OUTDOOR TEMP. THERMISTOR
HEAT SINK TEMP. THERMISTOR
TO OUTDOOR UNIT
ACTIVE FILTER MODULE
1
RED
CN37
2
1
BROWN
BROWN
BLACK
BLUE
BROWN
CN38
2
PRINTED CIRCUIT BOARD
1
CN21
2
1
CN22
2
1
CN23
2
1
CN25
2
CN11
123456
ORANGE
RED
BROWN
123
CN407
RED
YELLOW
4
W10
W11
FUSE
F2 T3.15A-250V
FUSE
F4 T5A 250V
W4W5W8 W1
-
BLACK
TM104
W2
WHITEYELLOW
+
CN30
CN11
N1P+
PURPLEBLUE
TM105
TM305
TM304
TM303
W102
W103
CN27
W3
WHITE
L1
WHITE
L2
CAPACITOR
RED
WHITE
V
BLACK
BLACK
1
2
BLACK
3
BLUE
1
2
RED
3
4
WHITE
5
6
BLACK
7
BLACK
BLACK
RED
1
BROWN
2
BLUE
3
ORANGE
4
YELLOW
5
WHITE
6
CHOKE COIL
U
COMPRESSOR
W
4-WAY VALVE
4WV
CONNECTOR
FAN MOTOR
FM
FAN CAPACITOR
EXPANSION
EV
VALVE COIL A
TERMINAL
RED
BLACK
WHITE
2(N)
1
- 6 -
FUSE 25A
3
WHITE
BLACK BLACK
LN
GREEN
2005.07.22
Model :
AUH24LUAR
TO REMOTE CONTROL UNIT
TERMINAL
2
3
1
RED
WHITE
BLACK
POWER SUPPLY
PCB BOARD
GREEN
Use T 3A-250V
N
BLACK
WHITE
RED
12
3
(N)
TERMINAL
TO OUTDOOR UNIT
L
1
2
3
Fuse on F101
GRAY
GRAY
1
1
CN7 CN8
1
2
CN17
3
BLACK
WHITE
GRAY
GRAY
2
2
CONTROLLER
1
222
3
1
PIPE TEMP. THERMISTOR
ROOM TEMP. THERMISTOR
BLACK
BLACK
1
2
2
1
BROWN
1
RED RED
2
2
ORANGE ORANGE
3
3
YELLOW YELLOW
CN10
4444
WHITE WHITE
5
BLACK
2
2
PCB BOARD
1
3
1
22
BLACK
CN15
33
BLACK
1
1
BLACK
2
CN6
CN1
RED
1
1
WHITE
2
2
BLACK
CN16
3
3
BLACK
1
1
WHITE
CN3
2
2
RED
33
CN5
PURPLE
5
5
BLUE
6
6
WHITE
11
WHITE
2
2
CN4
BROWN
1
11
2
2
3
3
555
BLACK
1111
2
2
BLACK
3
3
YELLOW
1
1
YELLOW
2
2
FAN MOTOR
GREEN / YELLOW
FM
FAN MOTOR
CAPA CITOR
STEP MOTOR
M
FLOAT
SWITCH
DRAIN PUMP
M
MOTOR
Model :
AOH24LMAKL
COMPRESSOR
PRESURE SWITC
COMPRESSOR
THERMAL SWITC
DISCHARGE TEMP. THERMISTOR
PIPE TEMP. THERMISTOR
OUTDOOR TEMP. THERMISTOR
HEAT SINK TEMP. THERMISTOR
RED
BROWN
BROWN
BLACK
BLUE
BROWN
ACTIVE FILTER MODULE
CN11
2
1
3456
ORANGE
RED
BROWN
123
4
CN407
1
CN37
2
FUSE
1
CN38
2
F2 T3.15A-250V
PRINTED CIRCUIT BOARD
1
CN21
2
1
CN22
2
1
CN23
2
1
CN25
2
FUSE
F4 T5A 250V
W4W5W8 W1
YELLOW
W10
WHITE
L1
WHITE
L2
N1P+
-
WHITEYELLOW
PURPLEBLUE
+
TM104
W2
CAPACITOR
TM105
TM305
TM304
TM303
CN30
CN11
W102
W103
CN27
W3
1
2
3
1
2
3
4
5
6
7
1
2
3
4
5
6
RED
WHITE
BLACK
BLACK
BLACK
BLUE
RED
WHITE
BLACK
BLACK
BLACK
RED
BROWN
BLUE
ORANGE
YELLOW
WHITE
RED
BLACK
W11
CHOKE COIL
V
4WV
CONNECTOR
FM
EV
U
COMPRESSOR
W
4-WAY VALVE
FAN MOTOR
FAN CAPACITOR
EXPANSION
VALVE COIL A
2005.07.22
TERMINAL
- 7 -
BLACK
WHITE
1 2(N) 3
RED
WHITE
GREEN
FUSE 25A
BLACK BLACK
L
N
REFRIGERANT SYSTEM DIAGRAM
CAPILLARY
TUBE
COMPRESSOR
ACCUMULATOR
MUFFLER
HEAT COOL
STRAINER
2-WAY
VALVE
EXPANSION
VALVE
3-WAY
VALVE
4-WAY VALVE
OUTDOOR UNIT
INDOOR UNIT
HEAT EXCHANGER
HEAT EXCHANGER
Models :AUH18LBAB / AOH18LMAKL
- 8 -
2005.07.22
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