CHECK AND TEST 1
Step 1
Unscrew cover of mainboard with a Cross-head screwdriver.
Step 2
Press the button SW1 on mainboard, within 1 minute after powering on the appliance, to start manual defrost.
Step 3
Test voltage of terminals for defrost heater.WARNING:
please keep all terminals connected with mainboard, otherwise, mainboard cannot output power for heater.
Step 4
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 cover of mainboard with a Cross-head screwdriver.
Step 2
Pull out the buckle to take out wires.
Step 3
Unscrew the mainboard.
Step 4
Disconnect terminals.
Step 5
Pull out the buckle to remove mainboard.
Reverse above steps to install a new board.
DIAGNOSIS 2
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