CHECK AND TEST 1

Note

Step 1

Unscrew cover of
mainboard with a
Cross-head screwdriver.

Step 2

Test resistance of
potentiometer from
“DOOR” and “GND”.

Step 3

Turn the knob from 0 to
max to test resistance of
potentiometer.

DIAGNOSIS 1


PROCEDURE 1


Step 1

Unscrew cover of
mainboard with a
Cross-head screwdriver.

Step 2

Disconnect terminals.



Step 3

Unscrew the mainboard.

Step 4

Prize off the buckle to
remove mainboard.

Reverse steps above
to install a new
mainboard.



DIAGNOSIS 2


PROCEDURE 2

Note

Before replacing
potentiometer, you need
to disassemble air duct.

Step 1

Remove all shelves.



Step 2

Remove basket.

Step 3

Remove screw covers.

Step 4

Unscrew.

Step 5

Pull the buttom air duct
out.

Step 6

Disconnect the wires for
thermostat.


Step 7

Take bottom air duct
away.

PROCEDURE 3



Step 1

Peel the tape
off.

Step 2

Take off the cover board.

Step 3

Push the buckle behind
the PCB.

Step 4

Pull the knob out.

Step 5

Prize the potentiometer
out.

Step 6

Take off the cover board.

CHECK AND TEST 3

Step 1

Check if the terminal is
stuffed with foam.


IF SO, USE TWEEZERS
TO SMASH IT AND
REMOVE.

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 4


Tip 1

Make sure the sealing
sponges are in good
condition.

Tip 2

make sure the part in red
box is sealed well with
tape.

Tip 3

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

Tip 4

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

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