General ASH7FB, ASH7FSBCW, AOH7FSBC, ASH7UB, ASH7USBCW Service Manual
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SPLIT TYPE
ROOM AIR CONDITIONER
WALL MOUNTED
Models
Indoor unit Outdoor unit
ASH7FSBCW
ASH7USBCW
ASH7USBCW AOH7USNC
AOH7FSBC
AOH7USBC
type
CONTENTS
SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
DIMENSIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
REFRIGERANT SYSTEM DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . 3
CIRCUIT DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
ERROR DISPLAY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
DISASSEMBLY ILLUSTRATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
PARTS LIST . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
15
6INDOOR PRINTED CIRCUIT BOARD CIRCUIT DIAGRAM . . . . .
8
SPECIFICATIONS
TYPE
INDOOR UNIT
OUTDOOR UNIT
COOLING CAPACITY (kW)
HEATING CAPACITY (kW)
ELECTRICAL SPECIFICATIONS
POWER SOURCE
RUNNING
CURRENT
INPUT WATTS (kW)
EER (kW/kW)
MOISTURE REMOVAL
AIR CIRCULATION - Hi (m3/hr )
(A)
COOLIING
HEATING
COOLIING
HEATING
COOLIING
HEATING
( /hr )
COMPRESSOR
TYPE
DISCRIMINATION
REFRIGERANT R410
( g )
Cooling and Heat-pump heatingCooling
ASH7FSBCW
AOH7FSBC
2.25
-----
Single-phase 230V 50Hz
3.7
-----
0.80
-----
2.81
-----
1.0
380
802-100-35 (F) 802-100-35 (F) C-1RV096H1A
550
ASH7USBCW
AOH7USNCAOH7USBC
2.20
2.30
3.9
3.6
0.83
0.75
2.65
3.07
1.0
380
Rotary
600600
FAN MOTOR
POWER SOURCE (V)
DISCRIMINATION
INDOOR UNIT
OUTDOOR UNIT
HI-SPEED (r.p.m.)
MED-SPEED (r.p.m.)
LO-SPEED (r.p.m.)
DISCRIMINATION
HI-SPEED (r.p.m.)
DIMENSIONS
INDOOR UNIT
OUTDOOR UNIT
H x W x D (mm)
H x W x D (mm)
WEIGHT
INDOOR UNIT
OUTDOOR UNIT
GROSS / NET (kg)
GROSS / NET (kg)
REFRIGERANT CHARGE (R410)
FULL
CHARGE
ADDITIONAL CHARGE
CHARGELESS
MAX PIPE LENGTH
MAX ELEVATION
PIPE LENGTH
7.5 m
10.0m
10 / 8
27 / 25
550 g
600 g
20g / m
7.5 m
10 m
5 m
230
MFA-40GRL
1,280
1,170
1,060
MFB-07ATW
790
257 x 808 x 187
535 x 650 x 250
10 / 8
28 / 26
600 g
650 g
20g / m
7.5 m
10 m
5 m
2005.02.10 1
DIMENSIONS
Models : ASH7FSBCW
ASH7USBCW
257
U nit : m m
187808
Models : AOH7FSBC
AOH7USBC
AOH7USNC
500
250
650
535
2005.02.10 2
REFRIGERANT SYSTEM DIAGRAM
Models : ASH7FSBCW / AOH7FSBC
INDOOR UNIT
Evaporator
(Flare connection)
[ Connecting pipe ]
OUTDOOR UNIT
Compressor
Gas pipe (9.52 dia.)
(Flare connection)
3-Way valve
(with charging port)
Condenser
Models : ASH7USBCW / AOH7USBC
ASH7USBCW / AOH7USNC
(Flare connection)
Liquid pipe (6.35 dia.)
(Flare connection)
2-Way valve
Dryer
Capillary tube
Compressor
Accumulator
: Cooling
: Heating
3-Way valve
4-Way valve
INDOOR UNIT
Evaporator
2-Way valve
Dryer (AOY7USBC)
Strainer (AOY7USNC)
Condenser
Common capillary tube
2005.02.10 3
Thermistor
(room)
Fan Motor
Test
Relay
Thermistor
(pipe)
Step Motor
Controller PCB
CIRCUIT DIAGRAM
Models : ASH7FSBCW / AOH7FSBC
Transformer
Terminal
INDOOR UNIT
Power Supply PCB
OUTDOOR UNIT
Terminal
N L
BLACK
BLACK
WHITE BLUE
Compressor
Capacitor
WHITE RED
2005.02.10 4
Compressor
R C
CM
S
Overload Relay
WHITE
Fan Motor
FM
RED
ORANGE
Fan Motor
Capacitor
Fan Motor
Test
Thermistor
(room)
Thermistor
(pipe)
Stepping Motor
Controller PCB
Models :
ASH7USBCW / AOH7USBC
ASH7USBCW / AOH7USNC
Transformer
Relay
INDOOR UNIT
Fan Motor
Capacitor
Power Supply PCB
Terminal
2005.02.10 5
Terminal
Compressor
Capacitor
OUTDOOR UNIT
Compressor
Overload
Relay
Fan Motor
Capacitor
Fan Motor
4-way
Valve Coil
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