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.
Step 5
Take note of the result.
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
Disconnect the terminal
of fan motor.
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 2
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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