General ARH18L, ARH18LUAD, AOH18LMAKL, ARH24L, ARH24LUAN Service Manual
...
INVERTER SPLIT TYPE
AIR CONDITIONER (50Hz)
DUCT
Models
Indoor unit Outdoor unit
ARH18LUAD AOH18LMAKL
ARH24LUAN AOH24LMAKL
type
CONTENTS
SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
DIMENSIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
CIRCUIT DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . .
. . . . . . . . . .
ERROR CONTENTS . . . . . . . . . . . . . . . . . . . . . . . .
DISASSEMBLY ILLUSTRATION . . . . . . . . . . . . . . . 12
PARTS LIST . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
STANDARD ACCESSORIES . . . . . . . . . . . . . . . . . . 22
10OUTDOOR PCB CIRCUIT DIAGRAM
11
5REFRIGERANT SYSTEM DIAGRAM . . . . . . . . . . . .
6
8INDOOR PCB CIRCUIT DIAGRAM
SPECIFICATIONS
TYPE
INDOOR UNIT ARH18LUAD ARH24LUAN
OUTDOOR UNIT
COOLING CAPACITY
HEATING CAPACITY (kW)
(kW)
AOH18LMAKL AOH24LMAKL
COOLING & HEATING
5.20 7.10
6.20 8.00
ELECTRICAL DATA
POWER SOURCE (V) 230
FREQUENCY (Hz)
RUNNING
CURRENT
INPUT WATTS (kW)
E.E.R. (kW/kW)
STARTING CURRENT (A)
MOISTURE REMOVAL 1.7 1.5
Note : The above list shows values at the external static pressure of
0Pa [ARH18L] / 30Pa [ARH24L] , setting the fan speed high notch.
COOLING 7.4 11.1
(A)
HEATING 8.3 10.6
COOLING
HEATING
COOLING 3.06 2.81
HEATING 3.26 3.29
( /hr)
1.70 2.53
1.90
50
2.43
10
COMPRESSOR
TYPE
DISCRIMINATION TNB220FPCM
REFRIGERANT R410A (g) 1,500 1,800
DISCRIMINATION MFA-18NTT MFA-30PTT
HIGH 1,040 980
FAN SPEED INDOOR
(r.p.m.) LOW 750 810
OUTDOOR HI / LO 780 / 400
AIR FLOW
DIMENSIONS
H x W x D
WEIGHT
GROSS / NET
MAX PIPE LENGTH / HEIGHT (m) 25 / 15
REMOTE CONTROLLER TYPE
INDOOR 800 1,490
(m3/ h)
OUTDOOR 2,800
INDOOR 217 x 953 x 595 270 x 1,135 x 700
(mm) OUTDOOR 650 x 830 x 320
INDOOR 29 / 25 48 / 41
(kg) OUTDOOR 58 / 54
MED 890 890
Hermetic type, 4 poles, DC motor,
Twin Rotary
WIRED
Note : The above list shows values at the external static pressure of
0Pa [ARH18L] (10mm Ag) / 30Pa [ARH24L] (10mm Ag),
setting the fan speed high notch.
12005.10.20
TYPE
INDOOR UNIT
OUTDOOR UNIT
ARH18LUAD ARH24LUAN
AOH18LMAKL
NOISE LEVEL
HI-SPEED (dB)
INDOOR UNIT
OUTDOOR UNIT (dB)
Note : Static pressure : 0Pa [ARH18L], 30Pa [ARH24L]
Duct length : Inlet 1m, Outlet 2m
MED-SPEED (dB) 34 32
LO-SPEED (dB) 30 29
COOL 50 / HEAT 52
COOLING & HEATING
38
AOH24LMAKL
34
COOL 52 / HEAT 54
Pipe Length
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.
7.5 m 1,500 g 1,800 g
10.0 m 1,500 g 1,800 g
15.0 m 1,600 g 2,000 g
20.0 m 1,700 g 2,200 g
25.0 m 1,800 g 2,400 g
22005.10.20
DIMENSIONS
INDOOR UNIT
Model : ARH18LUAD
390
(Unit : mm)
886
850
150
Model : ARH24LUAN
32
240
953
920
600
139
264 264 264
132
1,177
605
57520
114
66
32
168
217
240
281
121
200
477
161
173
1,015
1,135
54
107
700
283
40
39
240
270
16
32005.11.14
OUTDOOR UNIT
Models :
AOH18LMAKL
AOH24LMAKL
830
(Unit : mm)
350
320
650
12
Bottom
Air flow
343
603
42005.10.20
REFRIGERANT SYSTEM DIAGRAM
Models : ARH18LUAD / AOH18LMAKL
OUTDOOR UNIT NDOOR UNIT
Muffler
High
Pressure
Switch
4-Way
Valve
Refrigerant Pipe
12.7mm (1/2")
Condenser
Compressor
Expansion
Valve
Accumulator
Strainer
Refrigerant Pipe
6.35mm (1/4")
Evaporator
Models : ARH24LUAN / AOH18LMAKL
OUTDOOR UNIT NDOOR UNIT
Muffler
High
Pressure
Switch
4-Way
Valve
Refrigerant Pipe
15.88mm (5/8")
Condenser
Cool
Heat
Compressor
Expansion
Valve
Accumulator
Strainer
Evaporator
Refrigerant Pipe
9.52mm (3/8")
52005.10.27
CIRCUIT DIAGRAM
Model : ARH18LUAD
FAN MOTOR
CAPACITOR
Model : AOH18LMAKL
FAN MOTOR
GREEN / YELLOW
GRAY
2
1
CN6
2
(DRAIN PUMP)
CN11
1
(FRESH AIR)
2
1
(INDICATOR)
CN15
2
(FLOAT SW)
3
WHITE
1
CN4
WHITE
2
BLACK
1
WHITE
2
RED
3
CN5
PINK
4
PURPLE
5
BLUE
6
CN1
2
1
3
RED
BLACK
WHITE
Use T3.15A-250V
Fuse on F101
ACTIVE FILTER MODULE
1
GRAY
BLACK
BLACK
2
11
CN8CN7
CN10
(HEATER)
CN13
CN17
CONTROLLER
PCB BOARD
CN14
(HA)
POWER SUPPLY
PCB BOARD
CN11
2
3 456
1
2
1
2
3
4
5
6
7
8
3
2
1
1
2
3
4
BLACK
WHITE
RED
WHITE
BLACK
GREEN
-
PIPE TEMPERATURE THERMISTOR
ROOM TEMPERATURE THERMISTOR
3
2
(N)
1
3
2
1
TO OUTDOOR UNIT
OUTDOOR
UNIT
TO REMOTE CONTROL UNIT
REMOTE
CONTROL
TERMINAL
WHITE
L1
WHITE
L2
N1P+
CHOKE COIL
COMPRESSOR
PRESURE SWITC
COMPRESSOR
THERMAL SWITC
RED
BROWN
DISCHARGE TEMP. THERMISTOR
BROWN
PIPE TEMP. THERMISTOR
BLACK
OUTDOOR TEMP. THERMISTOR
BLUE
HEAT SINK TEMP. THERMISTOR
BROWN
RED
BROWN
123
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
TERMINAL
ORANGE
RED
YELLOW
4
W10
W11
W4W5W8 W1
RED
BLACK
WHITE
FUSE 25A
2(N)
1
3
BLACK
BLACK BLACK
TM104
L
WHITEYELLOW
+
CN30
CN11
W2
WHITE
N
PURPLEBLUE
CAPACITOR
TM105
TM305
TM304
TM303
1
2
3
1
2
3
4
5
6
7
W102
W103
1
2
3
CN27
4
5
6
W3
GREEN
RED
WHITE
V
BLACK
BLACK
BLACK
CONNECTOR
BLUE
RED
WHITE
BLACK
BLACK
BLACK
RED
BROWN
BLUE
ORANGE
YELLOW
WHITE
U
W
4WV
FM
EV
COMPRESSOR
4-WAY VALVE
FAN MOTOR
FAN CAPACITOR
EXPANSION
VALVE COIL A
62005.10.27
Model : ARH24LUAN
GREEN
E101
CN109
1
2
FAN MOTOR
Model : AOH24LMAKL
TRANSFORMER
PURPLE
PURPLE
2
1
1
2
CN103 CN104
POWER SUPPLY PCB
CN108CN107
3
4
2
5
6
2
5
3
4
6
REDRED
BLUEBLUE
3
1
2
5
6
2
5
3
1
6
WHITE WHITE
PINK PINK
PURPLE PURPLE
2
1
1
1
1
2
Use T3.15A-250V
Fuse on F101
WHITE
WHITE
BLACK
4
4
FAN
BLACK
CAPACITOR
TERMINAL
RED
RED
2
1
1
2
CN101
1
1
BLACK
1
3
2
1
CN114
2
1
CN115
W105
2
2
RED
WHITE
32
TO OUTDOOR UNIT
2
1
CN106CN105CN116
4
4
3
3
2
2
1
1
10
10
9
9
8
8
7
7
6
6
5
5
4
4
3
3
2
2
1
1
2
2
1
1
CN113
GRAY
GRAY
GRAY
GRAY
GRAY
GRAY
GRAY
GRAY
GRAY
GRAY
GRAY
GRAY
GRAY
GRAY
GRAY
GRAY
2
1
CN5
4
45
3
3
2
2
1
1
10
10
9
9
8
8
7
7
6
6
5
CN2 CN1
4
4
3
3
2
2
1
1
MAIN PCB
2
2
CN6 CN14 CN15
1
1
CN4
2
3
1
2
1
WHITE
BLACK
RED
2331
PIPE TEMP. THERMISTOR
ROOM TEMP. THERMISTOR
BLACK
BLACK
2
2
2
TERMINAL
GRAY
GRAY
2
11
11
2
CN7CN8
31
2
CN9
2
11
REMOTE CONTROL UNIT
ACTIVE FILTER MODULE
WHITE
CN11
1 2 3 4 5 6
L1
WHITE
L2
N1P+
-
CHOKE COIL
COMPRESSOR
PRESURE SWITC
COMPRESSOR
THERMAL SWITC
RED
BROWN
DISCHARGE TEMP. THERMISTOR
BROWN
PIPE TEMP. THERMISTOR
BLACK
OUTDOOR TEMP. THERMISTOR
BLUE
HEAT SINK TEMP. THERMISTOR
BROWN
RED
BROWN
123
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
TERMINAL
RED
YELLOW
ORANGE
4
W10
W11
W4W5W8 W1
RED
BLACK
WHITE
FUSE 25A
1
2(N)
3 L N
BLACK
BLACK BLACK
TM104
W2
WHITE
WHITEYELLOW
+
CN30
CN11
PURPLEBLUE
TM105
TM305
TM304
TM303
W102
W103
CN27
W3
GREEN
CAPACITOR
RED
WHITE
V
BLACK
BLACK
1
2
BLACK
3
CONNECTOR
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
U
W
4WV
FM
EV
COMPRESSOR
4-WAY VALVE
FAN MOTOR
FAN CAPACITOR
EXPANSION
VALVE COIL A
72005.10.28
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