General ARHA12LALU, ARHA14LU, ARHA14LALU, ARHA18LA, ARHA18LALU Service Manual
INVERTER SPLIT TYPE
AIR CONDITIONER (50Hz)
DUCT
type
Models
Indoor unit Outdoor unit
ARHA12LALU
ARHA14LALU
ARHA18LALU
AOHA12LACL
AOHA14LACL
AOHA18LACL
CONTENTS
SPECIFICATIONS
DIMENSIONS
CIRCUIT DIAGRAM
ERROR CONTENTS
PARTS (INDOOR UNIT)
PARTS (OUTDOOR UNIT)
STANDARD ACCESSORIES
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1
3
5REFRIGERANT SYSTEM DIAGRAM
6
7INDOOR PCB CIRCUIT DIAGRAM
10OUTDOOR PCB CIRCUIT DIAGRAM
12
14
17
20
SPECIFICATIONS
ELECTRICAL DATA
TYPE
Inverter Cool & Heat
Inverter Cool & Heat
Inverter Cool & Heat
INDOOR UNIT
OUTDOOR UNIT
COOLING CAPACITY 3.50 kW
HEATING CAPACITY 4.10 kW
POWER SOURCE
FREQUENCY 50 Hz
Cooling
RUNNING CURRENT
Heating
Cooling 1.05 kW
INPUT WATTS
Heating 1.11 kW
Cooling
E.E.R.
Heating
STARTING CURRENT
MOISTURE REMOVAL
MAXIMUM CURRENT 10.0 A 12.5 A12.5 A
Note : The above list shows values at the external static pressure
of 0Pa, setting the fan speed high notch. (indoor unit)
ARHA12LALU
AOHA12LACL
230 V
4.6 A
4.9 A
3.33 kW/kW
3.69 kW/kW
4.9 A
1.2 L/hr
ARHA14LALU
AOHA14LACL
4.30 kW
5.00 kW
230 V
50 Hz
5.8 A
5.9 A
1.33 kW
1.34 kW
3.21 kW/kW
3.71 kW/kW
5.9 A
1.5 L/hr
ARHA18LALU
AOHA18LACL
5.20 kW
6.00 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
7.7 A
2.0 L/hr
FAN SPEED
Discrimination
High
INDOOR UNIT
OUTDOOR UNIT
Note : The above list shows values at the external static pressure
of 0Pa, setting the fan speed high notch. (indoor unit)
Med
Low
Quiet
Discrimination
Cooling
Heating
MFH-24RVL
880 r.p.m.
780 r.p.m.
720 r.p.m.
620 r.p.m.
MFE-18ROM
770 r.p.m.
700 r.p.m.
AIR FLOW
High
Med 630 m
INDOOR UNIT
Low
Quiet
Cooling
OUTDOOR UNIT
Heating 1,630 m
720 m3/h
3
/h
560 m3/h
480 m3/h
1,780 m3/h
3
/h
MFH-24RVL
1,040 r.p.m.
950 r.p.m.
840 r.p.m.
740 r.p.m.
MFE-18ROM
820 r.p.m.
750 r.p.m.
820 m3/h
720 m3/h
610 m3/h
550 m3/h
1,910 m3/h
1,740 m3/h
MFH-24RVL
1,040 r.p.m.
950 r.p.m.
840 r.p.m.
740 r.p.m.
MFE-18ROM
860 r.p.m.
820 r.p.m.
820 m3/h
720 m3/h
610 m3/h
550 m3/h
2,000 m3/h
1,910 m3/h
Note : The above list shows values at the external static pressure
2007.10.12
of 0Pa, setting the fan speed high notch. (indoor unit)
When you dismantle indoor units which are installed,
1
take care not to make parts fall down, especially motors.
INDOOR UNIT
ARHA12LALU
ARHA14LALU
ARHA18LALU
OUTDOOR UNIT
AOHA12LACL
NOISE LEVEL
High speed 32 dB
INDOOR UNIT
Med speed 30 dB
Low speed
Quiet
OUTDOOR UNIT
Note : Static pressure : 0Pa
Duct length : Inlet 1m, Outlet 2m (indoor uit)
Cooling
Heating
MEASUREMENT
DIMENSIONS
H x W x D Outdoor unit
WEIGHT Indoor unit
Gross / Net Outdoor unit
Indoor unit
28 dB
26 dB
47 dB
48 dB
AOHA14LACL
33 dB
31 dB
29 dB
27 dB
49 dB
49 dB
217 x 953 x 595 mm
578 x 790 x 300 mm
27 kg / 23 kg
44 kg / 40 kg
AOHA18LACL
33 dB
31 dB
29 dB
27 dB
50 dB
50 dB
COMPRESSOR AND REFRIGERANT
COMPRESSOR TYPE
DISCRIMINATION
WEIGHT (with oil)
REFRIGERANT TYPE
STANDARD REFRIGERANT
Pipe Length
FULL CHARGE
ADDITIONAL CHARGE
MAXIMUM PIPE HEIGHT 15 m
15 m 1,150 g
20 m 1,250 g
25 m 1,350 g
Hermetic type, 4 poles, DC motor, Twin Rotary
R410A R410A R410A
1,150 g
20 g/m
DA130AIF-25NA
9.6 kg
1,250 g
1,250 g
1,350 g
1,450 g
20 g/m
15 m
1,250 g
1,250 g
1,350 g
1,450 g
20 g/m
15 m
2007.10.12
When you dismantle indoor units which are installed,
2
take care not to make parts fall down, especially motors.
DIMENSIONS
INDOOR UNIT
(Unit : mm)
886
850
390
953
920
600
150
605
57520
217
2007.10.12 3
OUTDOOR UNIT
Unit : mm
Top view
30066790
578
10
Front view
347
Side view
540
Air flow
320
184
121
Drain pipe
Bottom view
4- 10mm hole
mounting place
( 20)
2007.10.12 4
177
189
REFRIGERANT SYSTEM DIAGRAM
<Refrigerant direction>
Cool
Heat
OUTDOOR UNIT INDOOR UNIT
Muffler
3-Way
valve
Muffler
4-Way
valve
Heat exchanger
Compressor
Expansion
valve
: THERMISTOR (COMPRESSOR)
: THERMISTOR (DISCHARGE)
: THERMISTOR (HEAT EXCHANGER MED)
: THERMISTOR (HEAT EXCHANGER OUT)
: THERMISTOR (OUTDOOR AIR)
Accumulator
StrainerStrainer
Heat exchanger
2-Way
valve
: THERMISTOR (PIPE)
: THERMISTOR (ROOM)
<Refrigerant pipe diameter>
ARHA12LALU / AOHA12LACL
Liquid : 1/4" (6.35 mm)
Gas : 3/8" (9.52 mm)
ARHA14LALU / AOHA14LACL
ARHA18LALU / AOHA18LACL
Liquid : 1/4" (6.35 mm)
Gas : 1/2" (12.70 mm)
2007.10.12
5
CIRCUIT DIAGRAM
1
FAN MOTOR
F M
GREEN
/ YELLOW
2
3
4
5
6
7
8 8
1
2
3
4
5
6
7
BROWN
YELLOW
WHITE
BLACK
RED
1
1
2
2
3
3
4
4
5
5
6
6
E101 E102
1
2
3
4
5
1
2
3
4
5
1
2
3
1
2
INDOOR UNIT
GRAY
1 2
1 2 1 2 1 2
CN5 CN7 CN8
CN12
CONTROLLER
PCB ASSEMBLY
( MAIN PCB )
CN11
CN9
CN10
CN4
1 2
3 4 5 6 7 8
1 2
3 4 5 6 7 8
GRAY
GRAY
GRAY
GRAY
1 2
3 4 5 6 7 8
1 2
3 4 5 6 7 8
CN104 CN101
CN105
CN102 CN103
1 2
Power supply PCB Assy
GRAY
1 2
GRAY
FUSE 3.15A
GRAY
GRAY
GRAY
250V
1 2
3
BLACK
BLACK
CN3
CN13
CN14
CN6
CN1
123
1 2 3
GRAY
GRAY
1 2
1 2
CN106
TERMISTOR
( PIPE TEMP. )
TERMISTOR
( ROOM TEMP. )
1
2
3
4
5
6
1
2
3
4
5
6
7
RED
1
1
WHITE
2
2
BLACK
3
3
1
2
1
TERMINAL
2 3
TO REMOTE CONTROL UNIT
GRAY
3
3
RED
W105
W102
W101
1
2
WHITE
BLACK
1
TERMINAL
2 3
THERMISTOR
( PIPE TEMP. )
THERMISTOR
( DISCHARGE TEMP. )
THERMISTOR
( COMPRESSOR TEMP. )
THERMISTOR
( PIPE MID. TEMP. )
THERMISTOR
( OUTDOOR TEMP. )
FUSE
250V 5A
BLACK
TERMINAL
2
1 3 L
( N )
WHITE
BLACK
REACTOR
YELLOW
YELLOW
12
2
1
FUSE 250V 20A
BLACK
N
WHITE
RED
BLACK
BLACK
BROWN
BROWN
BROWN
BROWN
BLACK
BLACK
BLACK
BLACK
WHITE
BLACK
RED
GREEN
OUTDOOR UNIT
W10
W11
1
1
2
2
CN71
3
3
4
4
121
CN73
2
CONTROLLER PCB ASSY
121
1
2
3
2
1
2
3
W4
W2
W1
W3
( MAIN PCB )
CN72
CN70
FUSE
15A 250V
FUSE
3.15A
250V
CN801
CN40
CN30
W7
W8
W9
COMPRESSOR
S (S)
F M
PMV
R (R)
C M
C (T)
RED
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
1
1
2
3
WHITE
2
3
BLACK
FAN MOTOR
EXPANSION VALVE
4-WAY VALVE
BLACK
1
1
2
2
BLACK
3
3
4WV
GREEN
GREEN
2007.12.07 6
POWER SOURCE
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