LG LFC20770SW - 4) Poor cooling in refrigerator section.

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4
1-. Remove Case LED LAMP.
2-. Check Voltage between Red and
Black wires as is shown in the picture.
No Checking flow Result & SVC Action
Result SVC Action
Left Door S/W
pressed
11~12VDC Check in released condition.
0VDC Replace Door Switch (Left)
Left Door
S/W released
0VDC Go to step #5
Other Replace Refrigerator unit.
3-. Press and keep hold Refrigerator
door switch (Right)
4-. Press and Release Refrigerator
Door switch (Left)
5
1-. Check Voltage between Red and
Black wires as is shown in the picture.
2-. Press and keep hold Refrigerator
door switch (Left)
3-. Press and Release Refrigerator
Door switch (Right)
Result SVC Action
Left Door S/W
pressed
11~12VDC Check in released condition.
0VDC Replace Door Switch (Right)
Left Door
S/W released
0VDC Replace LED Lamp
Other Replace Refrigerator unit.
<Press / Release> <Press & Hold>
<Press & Hold> <Press / Release>