CHECH AND TEST 1
Step 1
Unscrew cover of
mainboard with a
Cross-head screwdriver.
Step 2
Heat fridge temp. sensor.
Step 3
Use multimeter to test
the voltage of output for
“FAN+” & “GND”.
Step 4
Take note of test result.
DIAGNOSIS 1
CHECK AND TEST 2
Step 1
Press the button SW1 on mainboard, within 1 minute after powering on the appliance, to start manual defrost.
Step 2
Test voltage from terminal for defrost heater in PCB area.
Step 3
Take note of the result. Later power off to quit manual defrost.
The value should be 230V.
DIAGNOSIS 2
PROCEDURE 1
Step 1
Unscrew cover of
mainboard with a
Cross-head screwdriver.
Step 2
Disconnect terminals.
Step 3
Unscrew the mainboard.
Step 4
Prize off the buckle to
remove mainboard.
Step 5
Prize off the buckle to remove mainboard.
PROCEDURE 2
DIAGNOSIS 3
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