LG LTCS20020 Series Service Manual page 41

7) Poor cooling in Refrigerator room
No
1.- Unplug connector from CON8.
1
2.- Check resistance in wires White to
White.
The sensor is determined by
the temperature.
For example, 30
2 Reset the unit and
Input Test 1 Mode.
(push the button 1 time)
3 Open the freezer door and
Check the air flow.
4 Check the air temperature.
Cold or not ?
Check the Fan motor.
5
Rotate fan using your hand.
It feel sticky, change the motor.
(cause of ice or rust inside of motor)
Checking flow
indicates 32°F.
Result & SVC Action
Temperature
23°F °C
32°F °C
41°F °C
50°F °C
59°F °C
Status
Windy
No windy
Status
Cold
Not cold
Point Result
Motor Release
41
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Only training and service purposes.
Result
38
30
24
19.5
16
SVC Action
Go to the 4
Check the Fan motor
(Next page)
SVC Action
Normal
Check the Compressor
And sealed system
SVC Action
Check section
Cooling
BLDC Fan
Motor Error