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 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 freezer drawers.
Step 2
Remove all glass shelves.
Step 3
Unscrew the screws on
air duct.
a. Check the freezer air
duct to find the three
screw covers.
b. Remove the screw
covers (total of three)
on the air duct with
slotted screw driver.
c. Unscrew the screws (total three) with Cross-head screw driver.
Step 4
Dismantle the air duct.
a. Catch the bottom of
air duct and pull down
the air duct.
b. Pay attention to the connectors when pulling out the air duct.
c.Disconnect the
terminal for fan motor.
Disconnect the
terminal for freezer
temp. sensor.
d. Move the air duct out of the freezer compartment.
CHECK AND TEST 2
Step 1
Check if terminal is
inserted to final position.
If not, please re-insert it
to final position.
Step 2
Check if sensor is attached in proper position, as
showing 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.
If so, use tweezers to
smash it and remove.
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
Install the top side first when installing the air duct.
Tip 4
After pushing air duct into place, you should hear a clicking sound. If not, repeat again.
Tip 5
Check to see if there is
a wide gap between air
duct and cabinet. If there
is, reinstall air duct.
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