General ARHF12LL, ARHF12LALU, AOHB12LALL, AOHB12LACL, ARHF14LL Service Manual
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INVERTER SPLIT TYPE
AIR CONDITIONER (50Hz)
DUCT TYPE
Indoor unit Outdoor unit
ARHF12LALU
ARHF12LALU
ARHF14LALU
ARHF14LALU
ARHF18LALU
ARHF18LALU
AOHB12LACL
AOHB12LALL
AOHB14LACL
AOHB14LALL
AOHB18LACL
AOHB18LALL
CONTENTS
SPECIFICATIONS
DIMENSIONS
CIRCUIT DIAGRAM
ERROR CONTENTS
PARTS (INDOOR UNIT)
PARTS (OUTDOOR UNIT)
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
INDOOR UNIT
Inverter Cool & Heat
ARHF12LALU
Inverter Cool & Heat
ARHF14LALU
Inverter Cool & Heat
ARHF18LALU
OUTDOOR UNIT
COOLING CAPACITY 3.50 kW
HEATING CAPACITY 4.10 kW
POWER SOURCE
FREQUENCY 50 Hz
Cooling
RUNNING CURRENT
Heating
AOHB12LA_L
230 V
4.9 A
5.1 A
Cooling 1.11 kW
INPUT WATTS
Heating 1.17 kW
E.E.R.
Cooling
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)
3.15 kW/kW
3.50 kW/kW
4.9 A
1.3 L/hr
AOHB14LA_L
4.30 kW
5.00 kW
230 V
50 Hz
6.2 A
6.2 A
1.41 kW
1.42 kW
3.05 kW/kW
3.52 kW/kW
5.9 A
1.5 L/hr
FAN SPEED
Discrimination
High
MFH-24RVL
880 r.p.m.
MFH-24RVL
1,040 r.p.m.
AOHB18LA_L
5.20 kW
6.00 kW
230 V
50 Hz
7.4 A
7.7 A
1.70 kW
1.75 kW
3.06 kW/kW
3.43 kW/kW
7.7 A
2.0 L/hr
MFH-24RVL
1,040 r.p.m.
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
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
Note : The above list shows values at the external static pressure
of 0Pa, setting the fan speed high notch. (indoor unit)
720 m3/h
3
/h
560 m3/h
480 m3/h
1,780 m3/h
3
/h
950 r.p.m.
840 r.p.m.
740 r.p.m.
MFE-18ROM
820 r.p.m.
750 r.p.m.
870 m3/h
770 m3/h
670 m3/h
580 m3/h
1,910 m3/h
1,740 m3/h
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
2008.08.01
When you dismantle indoor units which are installed,
1
take care not to make parts fall down, especially motors.
INDOOR UNIT
ARHF12LALU
ARHF14LALU
ARHF18LALU
OUTDOOR UNIT
AOHB12LA_L
NOISE LEVEL
High speed 32 dB
INDOOR UNIT
OUTDOOR UNIT
Note : Static pressure : 0Pa
Duct length : Inlet 1m, Outlet 2m (indoor unit)
Med speed 30 dB
Low speed
Quiet
Cooling
Heating
28 dB
26 dB
47 dB
48 dB
MEASUREMENT
DIMENSIONS
H x W x D Outdoor unit
WEIGHT Indoor unit
Gross / Net Outdoor unit
Indoor unit
AOHB14LA_L
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
AOHB18LA_L
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
2008.08.01
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
Drain pipe diameter
Inside : 21.5 mm
Outside : 26.0 mm
605
57520
217
2007.11.08 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)
2007.11.08 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>
ARHF12LALU / AOHB12LA_L
Liquid : 1/4" (6.35 mm)
Gas : 3/8" (9.52 mm)
ARHF14LALU / AOHB14LA_L
ARHF18LALU / AOHB18LA_L
Liquid : 1/4" (6.35 mm)
Gas : 1/2" (12.70 mm)
2008.08.01
5
CIRCUIT DIAGRAM
INDOOR UNIT OUTDOOR UNIT
REACTOR
FAN MOTOR
F M
GREEN
/ YELLOW
1
2
3
4
5
6
7
8 8
GRAY
GRAY
BLACK
BLACK
1
2
3
4
5
1 2
1 2 1 2 1 2
CN5 CN7 CN8
CN12
1 2
CN3
1
2
3
4
5
6
CONTROLLER
PCB ASSEMBLY
1
2
3
4
5
1
2
3
1
2
CN11
CN9
CN10
1 2
3 4 5 6 7 8
1 2
3 4 5 6 7 8
( MAIN PCB )
CN4
CN1
123
1 2 3
CN13
CN14
CN6
1
2
3
4
5
6
7
RED
1
1
WHITE
2
2
BLACK
3
3
1
2
TO REMOTE CONTROL UNIT
GRAY
GRAY
GRAY
GRAY
GRAY
1 2
3 4 5 6 7 8
1 2
BROWN
1
2
3
4
5
6
7
YELLOW
WHITE
BLACK
RED
1
1
2
2
3
3
4
4
5
5
6
6
E101 E102
CN105
3 4 5 6 7 8
CN104 CN101
POWER SUPPLY
PCB ASSEMBLY
CN102 CN103
1 2
GRAY
GRAY
GRAY
GRAY
GRAY
GRAY
1 2
3
1 2
3
RED
W105
WHITE
W102
BLACK
W101
CN106
1 2
3
1
2
TERMISTOR ( PIPE TEMP. )
TERMISTOR ( ROOM TEMP. )
TERMINAL
1
2 3
TERMINAL
1
2 3
THERMISTOR ( PIPE TEMPE. )
THERMISTOR ( DISCHARGE PIPE TEMP. )
THERMISTOR ( COMPRESSOR TEMP. )
THERMISTOR ( PIPE - MID. TEMP. )
THERMISTOR ( OUTDOOR TEMP. )
WHITE
FUSE 250V 5A
BLACK
BLACK
BLACK
TERMINAL
2
1 3 L
( N )
YELLOW
YELLOW
12
2
1
WHITE
RED
BLACK
BLACK
BROWN
BROWN
BROWN
BROWN
BLACK
BLACK
BLACK
BLACK
RED
WHITE
BLACK
FUSE 250V 20A
GREEN
N
W10
W11
1
1
2
2
CN71
3
3
4
4
121
CN73
2
CONTROLLER PCB ASSY
121
CN72
2
1
1
CN70
2
2
3
3
W4
W2
W1
W3
RED
W7
W8
W9
CN801
CN40
CN30 4-WAY VALVE
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
R (R)
COMPRESSOR
C M
S (S)
C (T)
F M
FAN MOTOR
EXPANSION VALVE
PMV
4WV
POWER SOURCE
GREEN
GREEN
2008.06.27
6
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