Page 1
)81$, Air Conditioner
MODEL:
SERVICE MANUAL
12'1'
Should be serviced by professional technicians
Page 2
Product Specifications (cooling & heating)................................................1
Dimensions...................................................................................................2
Refrigeration Cycle Diagram
Wiring Diagram
Operation Details
Disassembly of the parts (Indoor Unit)
2-way,3-way Valve
Cycle troubleshooting Guide
Electronic Parts Troubleshooting Guide
Exploded View & Replacement Parts List
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Contents
Page 3
Product Specifications (Cooling & Heating)
-1-
Model
Function
Power supply(V/~/Hz)
3
Air flow(m /h)
Cooling capacity(W)
Rate power
supply(W)
Rate current(A)
Environment temperature( )
Refrigerant charge(kg)
Noise level(kg)
Cooling
Heating
Indoor
Outdoor
Weight (kg)
Indoor
Outdoor
Indoor
Outdoor
Dimension (mm)
Depth Width Height
Dry capacity (kg/h)
IP Code
KFR-120AW
12000
5300
5200
8.8
KFR-155AW
Cooling heating
400V/3/50
2400
15500
Heating capacity(W)
6450
6200
Cooling
Heating
11. 3
8.4
3.7
62
68
60
110
3.0
10.9
4.6
62
68
60
120
3.6
IP24
-5 ~43
400V/3/50
2400
15500
12000
413 990 1245 413 990 1245
650 1430 411 650 1430 411
Page 4
Dimensions
(1)Indoor Unit
-2-
D
W
H
KFR-120AW
KFR-155AW
DIMENSION
1430mm
650
411
W
D
H
Page 5
H
L2
L1
D
W
DIMENSION
L1
L2
L3
KFR-120AW
352mm
980mm
1250mm
D
W
H
L3
-3-
412mm
580mm
380mm
(2)Outdoor Unit
KFR-155AW
Page 6
Refrigeration Cycle Diagram
COOLING AND HEATING
COOLING
HEATING
COOLING ONLY
WALL
Indoor unit Outdoor unit
Evaporator centrifugal fan leaf Connection pipe Valve Tube
Evaporator centrifugal fan leaf Connection pipe Valve Tube
Compressor
Single way valve
Condenser
Axial flow fan Hot(Cool) air outlet
Outdoor air in
4-way reversing valve
Outdoor fan motor
WALL
Indoor unit Outdoor unit
Compressor
Condenser
Axial flow fan
Hot air outlet
Outdoor air in
Outdoor fan motor
-4-
Indoor air inlet
Indoor fan motor
Cool(Hot) air Cool(Hot) air
Indoor air inlet
Indoor fan motor
Cool air
Cool(Hot) air
Page 7
-5-
MODE
Pipe size
( Diameter )
Gas
KFR-120AW KFR-155AWW
15
25
7
Liquid
Max Piping length (m)
Max Elevation (m)
Extra adding R22 (g/m)
Notes: When the length of connection pipe
5m the refrigerant should be charged 25g more
per 1m longer.
3/8"
3
4
Page 8
Wiring Diagram
-6-
Indoor unit wiring diagram
2
FUSE 3.15A 250V
F VCL N
2
Secondary
Primarily
220V-240VAC 50Hz
Power Supply
Control
Board
N V F
Pipe Temperature Sensor
2
FM
Electric Heater2
L N
To Outdoor Unit
(Red)
(Black)
(White)
(Yellow/green)
(Blue)
(Brown)
Transformer
Indoor Fan
Fan Capacitor
Electric Heater1Electric Heater3
(Yellow/green)
(Blue)
(Brown)
To Outdoor Unit
Page 9
-7-
Outdoor unit wiring diagram
3N 400V 50Hz
THR
Power Supply
To Indoor Unit
Defrost Temperature Sensor
(Blue)
(Brown)
(Yellow/green)
(Black)
(White)
(Red)
Contactor
Thermal Overload Relay
Compressor
Crankcade Heater
R-PH
3-Phase Direction Device
THR
Outdoor Fan Motor
Outdoor fan motor
Outdoor Fan Capacitor
Outdoor Fan Capacitor
(Red)
(White)
(Brown)
(Blue)
(Yellow/green)
Four Way Valve Coll
L1
L2L3
N
CM
R S T
L
FM3
RV
CON
FM2
F V C L N
CON
MCH
2
To Indoor Unit
Page 10
-9-
3 AUTO OPERATION
Press button to start air-conditioner. Now, fan speed is auto. Press to select fan
speed.
To stop working, please press button again.
Setting temperature is not shown on screen of the control board when in AUTO operation.
When operation shifts from auto into heating or cooling operation, indoor fan speed can be
set in low speed, middle speed, high speed or auto mode.
After air-conditioner operation for about 15 minutes, if you feel too warm or too cool, please push
or to adjust the temperature. Thus , you can get most comfort temperature.
Auto operation is a economical mode, which can select suitable operation mode according room-
temperature.
Push button to start air-conditioner.
Push button to select operation. Each pushing of this button changes the mode of operation
in this order from auto airflow venting cooling dry heating.
Push button to set fan speed.
Push or button to set needed temperature.
If you feel too warm, please push to decrease the temperature; if you feel too cool, please
push to increase the temperature. Thus ,you can get most comfort temperature.
Push button again, operation will stop.
4 COOLING DRY AND HEATING OPERATION
5 ADJUSTMENT OF FAN SPEED AND HOW TO DO TIMING
Press button to adjust fan speed. Fan speed changes in the recyclable order from low
speed ,middle speed ,high speed to auto in turn when press button once.
Select HIGH SPEED for stronger cooling.
To set timer-on or timer-off, push or button, then push or to adjust time.
To cancel the timer function ,please push button or button again.
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C
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C
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C
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C
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C
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C
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Operation instruction
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