PROCEDURE 1
Step 1.
Unscrew the screw of fridge air duct.
Step 2
Remove the LED lamp cover and the screw.
Step 3
Remove the air duct.
Step 4
Unplug the electrical wires.
Step 5
Disconnect the terminal of potentiometer.
Step 6
Remove the UI film.
Step 7
Remove PCB box from air duct.
a) Use 2 mm slot screw driver to create a gap in front side.
b) Insert a steell ruler to even the gap.
c) Pull the PCB box out.
Step 8
Disassemble PCB box.
a）Prize off the buckle;
b) Remove the cover;
c) Disconnect the terminals;
d) Unscrew and remove the PCB.
CHECK AND TEST 1
Step 1
Reconnect the main control board to the cable.
Step 2
Reconnect the electrical wires.
Step 3
Heat fridge temp. sensor.
Step 4
Press LED switch and hold on, then press the
button on mainboard for 3 seconds to start
manual defrost.
Please keep all terminals connected with
mainboard, otherwise, mainboard cannot
output power to heater.
Step 5
Test voltage of terminals for defrost 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
CHECK AND TEST 2
Step 1
Reconnect the main control board to the cable.
Step 2
Reconnect the electrical wires.
Step 3
Heat fridge temp. sensor.
Step 4
Press LED switch and hold on, then press the
button on mainboard for 3 seconds to start
manual defrost.
Please keep all terminals connected with
mainboard, otherwise, mainboard cannot output power to heater.
Step 5
Test voltage of terminals for defrost heater.
Step 6
Take note of the result.
Later power off to quit manual defrost.
The value should be
230V or 115V.
DIAGNOSIS 2
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