8.1 RELIABILITY FAULTS:

BUTTON ON DISPLAY DOESEN'T WORK

CHECK AND TEST 1

Step 1

Open the lower door, press the button, but it
doesn’t work. Press the button for 3s to check if
the appliance could be started or not.

DIAGNOSIS 1


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 stell 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 a new main control board to the cable.

Step 2

Reconnect the electrical wires.

Step 3

Heat fridge temp. sensor.

Step 4

Press the bottom to check again.

DIAGNOSIS 2


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