Poor cooling
32
Contact failure of
connector.
Connect it properly.
Poor defrosting
[4]
The refrigerator fan motor does not work
[5]
No
No
Yes
Yes (heats up)
Check the following and explain the
result: half-open door, space between
gaskets, the amount of ice.
Replace the defrost heater 1 and the
thermal fuse.
Check the resistance of the defrost
thermistor.
*1 The compulsory defrosting will not
work when the temperature of
the defrost thermistor is 14°C or
more.
CN9S
CN1A
CN2A
Control board
4-pin connector
4-pin connector
1-pin connector
Thermal fuse
Defrost heater 1
Defrost thermistor
Check if the connector on
the door switch is connect-
ed properly. If it is, replace
the door switch.
Abnormal
Normal
Interior LED
is not turned
on and off.
Interior LED is turned on and off properly.
OFF
etc
ON
R-door (right, left): closed
Door of the ice making
compartment : closed
Any one of the doors
is open
Doors
3-Pin connector
between
and
1
3
1
2
5~10mm
Door of vegetable
compartment
Door of freezer
compartment
Left door of refrigerator
comparttment
Door of ice
maki
ng
compartment
Door
of
versa
compartment
Right door of refrigerator
compartment
Door switches for refrigerator compartment (right and left) and ice making compartment
No
Not rotating
Yes
Replace refrigerator fan motor.
Check if CN5D connector on control
board is connected properly.
If it is, replace the control board.
Running
No
continuity
Connect the connectors properly.
Continuity detected
Replace refrigerator fan motor.
CN9S
CN5D
Control board
8-pin
connector
4-pin
connector
Refrigerator
fan motor
Reed switch board
3-pin connector
4-pin connector
2-pin
connector
Refrigerator compartment
(right and left)/ Ice making
compartment door switch
Freezer compartment
door switch
2
Unplug and plug the power cord to check if box
fan is rotating.
3
2
Check if there is continuity between thermal fuse
and defrost heater 1.
4
Check the continuity by
disconnecting the CN9S
on the control board.
1
<Control board>
Compulsory defrosting
Short circuit
CN7M
Note: Refrigerator fan motor is combined
with fan grille.
Note: Refrigerator fan motor is combined
with fan grille.
5
If any one of those doors is open, the switch between
and , terminals of 3-pin connector, will be OFF.
1
Short-circuit the terminals and of the compulsory
defrosting terminals (CN7M) of the control board to actuate
the compulsory defrosting function and check whether the
defrost heater is working properly.
*1
1
Check the door switch for continuity.
• Open and close the refrigerator door several times and
check if the interior LED will be turned on and off (interior
LED should get turned off when the door comes 10 mm
close to the refrigerator body .)
• Close the refrigerator compartment door until the LED is
turned off . Open and close the ice making compartment
door , and from the space of refrigerator compartment
door, check that the interior LED is turned on and off.
Unplug and plug the power cord to perform self-check on
refrigerator fan motor. Is the display indicating abnormality?
Check if there is continuity in 4-pin fan motor connector in
versa compartment.