CHECK AND TEST 1
Unscrew cover of mainboard with a Cross-head screwdriver.
Power on the appliance and start manual defrost.
a) Press Freezer Temp. button together with Mode button for 5 sec, 0 flashes in freezer temp. area.
b) Press Freezer Temp. button, 1 and 3 will appear in freezer temperature area.
c) When 3 appears, remove finger and select manual defrost.
1 means:
start forced cooling.
3 means:
start manual defrost.
Measure output voltage for defrost heater from terminal on mainboard.
Take note of result.
DIAGNOSIS 1
PROCEDURE 1
Disconnect terminals.
Unscrew the mainboard.
Pull out the buckle.
Remove the mainboard.
PROCEDURE 2
CHECK AND TEST 2
Power on the appliance and start manual defrost.
a) Press Freezer Temp. button together with Mode button for 5 sec, 0 flashes in freezer temp. area.
b) Press Freezer Temp. button, 1 and 3 will appear in freezer temperature area.
c) When 3 appears, remove finger and select manual defrost.
1 means:
start forced cooling.
3 means:
start manual defrost.
Measure output voltage for defrost heater from terminal on mainboard.
Take note of result.
DIAGNOSIS 2