General AUHA12LN, AUHA12LALN, AOHA12LACL, AUHA14LN, AUHA14LALN Service Manual
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SPLIT TYPE
AIR CONDITIONER
CASSETTE
Models
Indoor unit Outdoor unit
type (50Hz)
AUHA18LALN AOHA18LACL
AUHA24LALN AOHA24LACL
CONTENTS
SPECIFICATIONS . . . . . . . . . . . . . . . . . . . .
OUTLINE AND DIMENSIONS . . . . . . . . . . .
REFRIGERANT SYSTEM DIAGRAM . . . . .
CIRCUIT DIAGRAM . . . . . . . . . . . . . . . . . . .
PCB CIRCUIT DIAGRAM . . . . . . . . . . . . . . .
ERROR DISPLAY . . . . . . . . . . . . . . . . . . . .
DISASSEMBLY ILLUSTRATION . . . . . . . .
PARTS LIST . . . . . . . . . . . . . . . . . . . . . . . .
ACCESSORIES . . . . . . . . . . . . . . . . . . . . .
1
2
6
7
9
14
16
23
25
SPECIFICATIONS
TYPE
INDOOR UNIT
OUTDOOR UNIT
COOLING CAPACITY
HEATING CAPACITY
ELECTRICAL DATA
POWER SOURCE
RUNNING
CURRENT
INPUT WATTS
E.E.R.
COP
MOISTURE REMOVAL
AIR CIRCULATION
(HIGH)
COOLING
HEATING
COOLING
HEATING
COOLING
HEATING
COOLING
HEATING
FAN MOTOR
DISCRIMINATION
INDOOR
UNIT
( cool / heat )
OUTDOOR UNIT ( cool / heat )
HIGH SPEED
MED SPEED
LOW SPEED
QUIET
INVERTER COOL & HEAT
AUHA18LALN AUHA24LALN
AOHA18LACL AOHA24LACL
5.2 kW
6.0 kW
230 V 50 Hz
7.1 A
7.3 A
1.62 kW
1.66 kW
3.21 kW/kW
3.61 kW/kW
2.2 L/hr
680 m3/hr 930 m3/hr
800 m3/hr
MFF-24RV
730 / 830 r.p.m.
630 / 730 r.p.m.
540 / 630 r.p.m.
460 / 500 r.p.m.
860 / 820 r.p.m. 1,050 / 1,050 r.p.m.
7.1 kW
8.0 kW
230 V 50 Hz
9.7 A
9.7 A
2.21 kW
2.21 kW
3.21 kW/kW
3.61 kW/kW
2.7 L/hr
930 m3/hr
960 / 960 r.p.m.
850 / 880 r.p.m.
650 / 740 r.p.m.
500 / 580 r.p.m.
NOISE LEVEL
HIGH SPEED
INDOOR UNIT
( cool / heat )
OUTDOOR UNIT ( cool / heat ) 50 dB / 50 dB
MED SPEED
LOW SPEED
QUIET
38
dB
/ 43
dB
34
dB
/ 38
dB
30
dB
/ 34
dB
26 dB / 30 dB
49
dB
/ 49
44
dB
/ 45
36
dB
/ 40
30 dB / 33 dB
52 dB / 53 dB
DIMENSIONS
INDOOR UNIT 245 x 570 x 570 mm
PANEL 49 x 700 x 700 mm
OUTDOOR UNIT
H x W x D
H x W x D
H x W x D
578 x 790 x 300 mm 578 x 790 x 315 mm
WEIGHT
INDOOR UNIT 15 kg / 18 kg 17 kg / 20 kg
PANEL 2.6 kg / 4.5 kg
OUTDOOR UNIT
Net / Gross
Net / Gross
Net / Gross
44 kg / 40 kg 48 kg / 44 kg
REFRIGERANT CHARGE (R410A)
Pipe Length
FULL CHARGE
ADDITIONAL REFRIGERANT
15 m 1,250 g
20 m 1,350 g
20 g/m
1,700 g
1,800 g
20 g/m
dB
dB
dB
12006.10.26
OUTLINE AND DIMENSIONS
DECORATION PANEL
Unit : mm
700
700
30
49
22006.09.27
INDOOR UNIT
Unit : mm
75
135
250
TOP VIEW
102
146
245
40
99
30
108
SIDE VIEW
2006.10.24
3
OUTDOOR UNIT
AOHA18LACL
Unit : mm
Top view
30066790
578
10
347
Front view
Side view
540
Air flow
320
184
121
Drain pipe
mounting place
( 20)
Bottom view
4- 10mm hole
42006.10.26
177
189
OUTDOOR UNIT
AOHA24LACL
Unit : mm
Top view
31566790
578
10
347
Front view
Side view
540
Air flow
320
184
121
Drain pipe
mounting place
( 20)
Bottom view
4- 10mm hole
52006.10.26
177
189
REFRIGERANT SYSTEM DIAGRAM
OUTDOOR UNIT
Heat exchanger
INDOOR UNIT
Muffler
3-Way
valve
Muffler
4-Way
valve
Heat exchanger
Accumulator
Compressor
Cool
Heat
: THERMISTOR (COMPRESSOR TEP.)
: THERMISTOR (DISCHARGE TEP.)
: THERMISTOR (HEAT EXCHANGER MED TEP.)
: THERMISTOR (HEAT EXCHANGER OUT TEP.)
: THERMISTOR (OUTDOOR TEP.)
Refrigerant pipe diameter
AUHA18LALN / AOHA18LACL
Liquid : 1/4" (6.35 mm)
Gas : 1/2" (12.70 mm)
AUHA24LALN / AOHA24LACL
Liquid : 1/4" (6.35 mm)
Gas : 5/8" (15.88 mm)
Expansion
valve
StrainerStrainer
2-Way
valve
: THERMISTOR (PIPE TEP.)
: THERMISTOR (ROOM TEP.)
2006.10.26 6
CIRCUIT DIAGRAM
INDOOR UNIT
GRAY
GRAY
PIPE TEMPERATURE
THERMISTOR
STEP MOTOR
STEP MOTOR
FLOAT SWITCH
1
1
ORANGE
2
2
3
4
5
1
2
3
4
5
3
4
5
1
ORANGE
2
3
4
5
M
M
BLACK
BLACK
RED
YELLOW
PINK
BLUE
RED
YELLOW
PINK
BLUE
1
1
1
1
2
2
3
3
1
1
2
2
3
3
4
4
5
5
1
1
2
2
3
3
4
4
5
5
CN5
CN9
CN12
CONTROLLER PCB ASSY
( MAIN PCB )
CN11
123 45678
123 45678
BLACK
BLACK
2
2
2
1
2
1
CN8
CN13
CN14
CN4 CN1
123
123
1
2
3
4
5
676
1
2
3
1
BROWN
RED
2
ORANGE
3
YELLOW
4
WHITE
5
BLUE
PURPLE
7
RED
1
WHITE
2
BLACK
3
TERMINAL
ROOM TEMPERATURE
THERMISTOR
1
1
1
2
2
2
3
3
3
4
4
4
5
5
5
67676
7
INDICATOR PCB ASSY
2 3
1
TO REMOTE
CONTROL UNIT
( OPTION )
FAN
MOTOR
F M
GRAY
GRAY
GRAY
123 45678
BROWN
1
1
2
2
3
3
4
4
5
5
6
6
7
7
8
8
YELLOW
WHITE
BLACK
RED
1
1
2
2
3
3
CN105
4
4
5
5
6
6
E101
GREEN
POWER SUPPLY
PCB ASSY
E102
GREEN
GRAY
GRAY
45678
GRAY
GRAY
GRAY
GRAY
123123
123
CN104
FUSE 3.15A
CN101
250V
1
1 2
YELLOW
M
YELLOW
DRAIN PUMP MOTOR
GRAY
GRAY
W105
W102
W101
2
RED
WHITE
BLACK
1 2
TO OUTDOOR UNIT
TERMINAL
3
72006.10.25
OUTDOOR UNIT
PIPE TEMPERATURE
THERMISTOR
DISCHARGE PIPE
TEMPERATURE THERMISTOR
COMPRESSOR
TEMPERATURE THERMISTOR
PIPE ( MID )
TEMPERATURE THERMISTOR
OUTDOOR TEMPERATURE
THERMISTOR
WHITE
FUSE 250V 5A
BLACK
BLACK
REACTOR
YELLOW
YELLOW
12
2
1
FUSE 250V 20A
BLACK
RED
WHITE
BLACK
BLACK
BROWN
BROWN
BROWN
BROWN
BLACK
BLACK
BLACK
BLACK
WHITE
BLACK
W10
W11
1
1
2
2
CN71
3
3
4
4
121
CN73
2
CONTROLLER PCB ASSY
CN72
CN70
( MAIN PCB )
FUSE
15A 250V
FUSE
3.15A
250V
RED
GREEN
121
1
2
3
2
1
2
3
W4
W2
W1
W3
S (S)
F M
FAN MOTOR
EXPANSION
PMV
VALVE
4WV
VALVE
R (R)
C M
RED
W7
W8
W9
CN801
CN40
CN30 4-WAY
RED
WHITE
BLACK
RED
1
1
2
2
BLACK
3
3
WHITE
4
4
YELLOW
5
5
BLUE
6
6
RED
1
1
BROWN
2
2
BLUE
3
3
ORANGE
4
4
YELLOW
5
5
WHITE
6
6
BLACK
1
1
2
2
BLACK
3
3
1
1
2
3
WHITE
2
3
BLACK
COMPRESSOR
C (T)
TERMINAL
TO INDOOR UNIT
2
1 3 L
( N )
POWER SOURCE
N
82006.11.15
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