LG LTCS20020 Series Service Manual page 42

8) Over 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 refrigerator door and
Check the air flow.
4 Input Test 2 Mode and
Check the air flow.
(push the button 1 time)
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
Windy
No windy
42
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Result
38
30
24
19.5
16
SVC Action
Go to the 4
Check the PCB
SVC Action
Change the PCB
It 's normal