CHECK AND TEST 1
Step 1
Unscrew cover of mainboard with a Cross-head screwdriver.
Step 2
In mainboard area, check if terminal is inserted to final position.
If not, reinserted it to final position.
Step 3
Turn power output of transformer to DC 12V.
Step 4
Supply power from terminal in PCB area (FAN & GND).
Step 5
Put your hand near outlet of freezer air duct to feel if fan is blowing or not.
DIAGNOSIS 1
PROCEDURE 1
Step 1
Remove all freezer drawers.
Step 2
Remove all freezer shelves.
Step 3
Remove screw covers (total of two) on upper freezer air duct with Slotted Screw Driver.
Step 4
Unscrew screws (total
of two) on upper freezer
air duct with Cross-head
screw driver.
Step 5
Catch bottom of air duct upper freezer air duct and pull all buckles (total of 8) down.
Step 6
Take out upper freezer
air duct by tilting to one
side.
Pay attention to the
connectors when pulling
out the air duct.
Step 7
Disconnect the terminal for fan motor and move upper freezer air duct away.
CHECK AND TEST 2
Step 1
Check if terminal is
inserted to final position.
If not, reinsert it.
A is not correctly inserted; B & C is OK.
Step 2
Check if terminal is filled with foam or not.
If yes, use tweezers to clean and remove the foam.
Step 3
Check if wire order is correct or not.
Pictures on right side show correct wire order.
Step 4
Check if the wires are broken or not.
DIAGNOSIS 2
PROCEDURE 2
Step 1
Cut wire off from broken area.
Step 2
Peel off the sleeves.
Step 3
Check to ensure proper wire order and connect them.
Step 4
Tin soldering.
Step 5
Cover connection with electrical tape.
CHECK AND TEST 3
Step 1
Set output of transformer to DC 12V to test fan from the terminal behind the air duct.
Step 2
Use power source to test fan from terminal in the back of air duct.
DIAGNOSIS 3
Note
CHECK AND TEST 4
Step 1
Set multimeter to resistance gear.
Step 2
Put detector into one end of wires in PCB area.
Step 3
Put another detector into end of wires behind air duct.
DIAGNOSIS 4
CHECK AND TEST 5
Step 1
Reconnect terminal of fan motor.
Step 2
Turn power output of transformer to DC 12V.
Step 3
Supply power from terminal in PCB area (FAN & GND).
Step 4
Put your hand near outlet of freezer air duct to feel if fan is blowing or not.
DIAGNOSIS 6
PROCEDURE 3
Tip 1:
When restoring the upper freezer air duct, fasten the wires to avoid crushing them with air duct.
Tip 2:
All buckles should be pushed into proper final position. If not, please repeat installation.
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