 
 
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
 
 
