General ARHA12L, ARHA12LATN, AOHA12LACL, ARHA14L, ARHA14LATN Service Manual
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INVERTER SPLIT TYPE
AIR CONDITIONER (50Hz)
DUCT
type
Models
Indoor unit Outdoor unit
ARHA12LATN
ARHA14LATN
ARHA18LATN
AOHA12LACL
AOHA14LACL
AOHA18LACL
CONTENTS
SPECIFICATIONS
DIMENSIONS
REFRIGERANT SYSTEM DIAGRAM
CIRCUIT DIAGRAM
INDOOR PCB CIRCUIT DIAGRAM
OUTDOOR PCB CIRCUIT DIAGRAM
ERROR CONTENTS
PARTS (INDOOR UNIT)
PARTS (OUTDOOR UNIT)
STANDARD ACCESSORIES
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. . . 5
. . 11
SPECIFICATIONS
TYPE
INDOOR UNIT
OUTDOOR UNIT
COOLING CAPACITY 3.50 kW
HEATING CAPACITY 4.10 kW
Inverter Cool & Heat
ARHA12LATN
AOHA12LACL
ELECTRICAL DATA
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 1.2 L/hr
230 V
4.6 A
4.9 A
3.33 kW/kW
3.69 kW/kW
4.9 A
Inverter Cool & Heat
ARHA14LATN
AOHA14LACL
4.30 kW
5.00 kW
230 V
50 Hz
5.9 A
5.9 A
1.34 kW
1.34 kW
3.21 kW/kW
3.71 kW/kW
4.9 A
1.5 L/hr
Inverter Cool & Heat
ARHA18LATN
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
Note : The above list shows values at the external static pressure
of 0Pa, setting the fan speed high notch. (indoor unit)
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
720 m3/h
3
560 m3/h
/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
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
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)
480 m3/h
1,780 m3/h
3
/h
2007.02.21 1
550 m3/h
1,910 m3/h
1,740 m3/h
When you dismantle indoor units which are installed,
take care not to make parts fall down, especially motors.
550 m3/h
2,000 m3/h
1,910 m3/h
INDOOR UNIT
ARHA12LATN
ARHA14LATN
ARHA18LATN
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
TYPE
DISCRIMINATION
REFRIGERANT
R410A 1,150 g
Hermetic type, 4 poles, DC motor, Twin Rotary
REFRIGERANT CHARGE
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
20 g / m
DA130AIF-25NA
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
2007.02.21 2
When you dismantle indoor units which are installed,
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
2007.02.21 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)
2007.02.21 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>
ARHA12LATN / AOHA12LACL
Liquid : 1/4" (6.35 mm)
Gas : 3/8" (9.52 mm)
ARHA14LATN / AOHA14LACL
ARHA18LATN / AOHA18LACL
Liquid : 1/4" (6.35 mm)
Gas : 1/2" (12.70 mm)
2007.02.21 5
CIRCUIT DIAGRAM
INDOOR UNIT
GRAY
GRAY
BLACK
BLACK
PIPE THERMISTOR
ROOM THERMISTOR
Fan Motor
F M
GREEN
/ YELLOW
2
1
CN8
8
7
8
7
GRAY
GRAY
8
7
8
7
250V
CN103
2
2
CN1
1 3
2
1 3
2
GRAY
GRAY
1 3
2
1 3
2
2
1
2
CN3
3
1
2
3
4
5
CN13
6
7
1
2
CN14
3
1
CN6
2
GRAY
W105
W102
W101
CN106
1
2
RED
1
WHITE
2
BLACK
3
1
2
To Remote Control Unit
( Option )
RED
WHITE
BLACK
1 2
3
Terminal
3
Terminal
2 1
1
2
1
1
CN5 CN7
1
2
3
CN12
4
5
Controller PCB Assy
(main PCB)
1
2
3
4
CN11
5
1
2
CN9
3
1
2
CN10
CN4
1
3
2
1
2
GRAY
GRAY
1
2
1
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
4
4
5
5
6
6
E101
2
Power Supply PCB
CN105
E102
54
6
3
54
6
GRAY
GRAY
GRAY
GRAY
3
54
6
3
54
6
CN104 CN101
FUSE 3.15A
CN102
1 3
2 1
To Outdoor Unit
GREEN
GREEN
2007.02.21 6
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