CHECK AND TEST 1

Step 1

Unscrew cover of mainboard with a Cross-head screwdriver.

Step 2

Check if terminal in PCB area is pushed to final position. If not, reinsert it to final position.

Step 3

Set multimeter to resistance gear.

                                                                                                                

Step 4

In PCB area, measure the resistance of defrost temp. sensor with a multimeter.

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Step 5

Take note of the value.

Step 6

Measure the temperature of freezer air duct, near the defrost temp. sensor. Use measured temperature to find the standard resistance value in Temperature-Resistance Chart for Sensor .

DIAGNOSIS 1


PROCEDURE 1


Step 1

Remove all shelves.

Step 2

Remove upper drawers.

Step 3

Remove bottom drawer.

Step 4

Remove drawer cover.

                                                         

Step 5

Remove glass shelves under drawers.

Step 6

Prize off the decorative panel and take if off.

Step 7

Unscrew the upper air duct.

Step 8

Pull outward and take off the upper air duct.


Step 9

Unscrew the lower airduct.


Step 10

Disconnect the connectors between airduct and cabinet.


Step 11

Remove the lower air duct.

CHECK AND TEST 2

Step 1                                    Check if terminal is pushed properly into final position.


Step 2

Check if sensor is attached in proper position, as shown in picture. If not, correct it.

Step 3                                    Check if wire of defrost sensor is broken. If yes, replace it with a new one.

Step 4

Disconnect terminal of defrost temp. sensor.

Step 5

Check if the terminal is stuffed with foam.

Step 6

Measure resistance of defrost temp. sensor from terminal in freezer, and take note of it.

Step 7

Measure the temperature of defrost temp. sensor.

DIAGNOSIS 2


CHECK AND TEST 3

Step 1

Set multimeter to resistance gear. .

Step 2

Put detector into one end of wires in PCB area. Put another detector into end of wires behind air duct.

DIAGNOSIS 3


PROCEDURE 2



Tip 1

Make sure the sealing sponges are in good condition.

Tip 2

When reinstalling the air duct, fasten the wires to avoid crushing with air duct.

Tip 3

Check to see if there is a wide gap between air duct and cabinet. If there is, reinstall air duct.


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