CHECK AND TEST 1
Step 1
Unscrew cover of mainboard with a Cross-head screwdriver.
Step 2
Heat freezer temp. sensor.Step 3
Open the fridge and freezer door to same degree.
Step 4
Press the button SW1 on mainboard, within 1 minute after powering on the appliance, to start manual defrost.
Step 5
Test voltage of terminals for defrost heater.
WARNING:
please keep all terminals connected with mainboard, otherwise, mainboard cannot output power for heater.
Step 6
Take note of the result. Later power off to quit manual defrost.
The value should be 230V or 115V.
DIAGNOSIS 1
PROCEDURE 1
Step 1
Unscrew the mainboard.
Step 2
Pull out the buckle to take out wires.
Step 3
Disconnect terminals.
Step 4
Pull out the buckle to remove mainboard.
Reverse above steps to install a new board.
DIAGNOSIS 2
