C C
21
7. TROUBLE DIAGNOSIS & REPAIR SOLUTIONS
Mainboard inspection method
At the self-diagnosis stage, you must cut off and reconnect to the power for inspection.
The self-diagnosis codes are listed below
self-diagnosis codes:
NO
1
2
3
4
5
ITEM
Refrigerating sensor
Main evaporator sensor
Freeze sensor
External sensor
Magnetic switch
DISPLAY
TROUBLE
Open circuit
short circuit
Open circuit
short circuit
Open circuit
short circuit
Open circuit
short circuit
COMMENTS
Test temp. lower than -50
Test temp. higher than +85
Test temp. lower than -50
Test temp. higher than +85
Test temp. lower than -50
Test temp. higher than +85
Test temp. lower than -50
Test temp. higher than +85
Magnetic spring switch ON/OFF
is unable to be detected after 1
minute's run
Air door relay failure, or motor,
air door magnetic spring switch
or magnet trouble
Door switch
Refrigerating sensor
Refrigerating compartment
Freeze compartment
Sensor resistance and core chip voltage and temp.
Temp Temp
Resistance ResistanceResistance Resistance
Voltage VoltageVoltage Voltage
Temp Temp
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