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 steel 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

From Mainboard area, test resistance of
ambient temperature sensor.

Step 2

Measure sensor temperature.

DIAGNOSIS 1

CHECK AND TEST 2

Step 1

Cut off the sensor. 

Step 2

Strip off the sleeves. 

Step 3

Connect the 2 ends in PCB area with wire. 

Step 4

Test the connection. 

DIAGNOSIS 2


PROCEDURE 2



Step 1

Strip off the wires of sensor. 

Step 2

Connect wires of new sensor to wires on cabinet. 

Step 3

Tin soldering.

Step 4

Cover connection with electrical tape. 

CHECK AND TEST 3

Step 1

From Mainboard area, test resistance of
ambient temperature sensor.

Step 2

Measure sensor temperature.

Step 3

Connect the mainboard, fridge sensor and LED, then power on to check if warning disappears or not.

DIAGNOSIS 1


PROCEDURE 4



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