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Short-circuit the terminal
1
defrosting terminals (CN1M) of the filter board to actuate
the compulsory defrosting function and check whether the
defrost heater is working properly.
2
Check if there is continuity between thermal fuse
and defrost heater.
CN7S
4
4
9
9
CN2A
3
3
5
5
1
Plug and unplug the power cord to perform self-check on
refrigerator fan motor. Is the lamp indicating abnormality?
2
Plug and unplug the power cord to check if
machine chamber fan motor is rotating.
3
Check the door switch for continuity.
•Open and close the refrigerator door b several times
and check if the room light will be turned on and off
(Room light should get turned off when the door comes
10mm close to the refrigerator body a.)
•Close the refrigerator compartment door until the light is
turned off a. Open and close the ice-making-compart-
ment door c, and from the space of refrigerator compat-
ment door, check that the room light is turned on and off.
5
Check if there is continuity in 6-pin fan motor connector in
versa compartment.
Door switch for refrigerator compartment (right and left) and ice making compartment.
Doors
2-Pin connector
Between
1
and
2
CN7S
4
4
3
3
CN4D
6
6
8
8
5
5
3
3
Poor cooling
and
of the compulsory
No
No
Yes
4-pin connector
9-pin connector
3 3
1-pin connector
1 1
Defrost heater
1
1
2
2
2-pin connector
No
Running
Room light is turned on and off properly.
Continuity detected
R-door (right, left): closed
Any one of the doors
Door of the ice making
are open
compartment : closed
etc
1
OFF
Lead Switch board
2-pin
8-pin
connector
connector
8
8
2
2
1
1
7
7
6-pin
4-pin
connector
connector
1
1
4
4
2
2
3
3
4
4
2
2
3
3
1
1
23
Yes (heats up)
*1
2
2
4
4
Thermal fuse
Defrost thermistor
Yes
Not rotating
Room light is
not turned on
and off.
Check the continuity by
4
disconnecting the CN7S
on the control board.
(See figure below.)
Normal
No continuity
wIf any one of those doors are open, the switch between
1 and 2,terminals of 2-pin connector, will be OFF)
2
ON
Refrigerator compartment
(right and left)/ Ice making
compartment door switch
Refrigerator
M
fan motor
Check the following: half-open door,
space between gaskets, the amount
of ice.
Replace the defrost heater and the
thermal fuse.
Check the resistance of the defrost
thermistor.
<Control board>
Short circuit
CN1
Compulsory defrosting
*1 The compulsory defrosting will
not work when the temperature
of the defrost thermistor is 14:
or more.
Replace refrigerator fan motor.
Note: Refrigerator fan motor is combined
with fan grille.
Check if CN4D connector on control
board is connected properly.
If it is, replace the control board.
Contact failure of
Abnormal
connector.
Connect it proper-
ly.
Check if the connector on
the door switch is connect-
ed properly. If it is, replace
the door switch.
Connect the connectors properly.
Replace refrigerator fan motor.
Note: Refrigerator fan motor is combined
with fan grille.
1
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