LTC22350SS LG refrigerator cooling problem

Realltor1

Premium Member
Joined
Oct 12, 2018
Messages
4
Location
Jackson, TN
Model Number
LTC22350SS
Brand
LG
Age
6-10 years
My frige stopped cooling. Area between freezer and frige froze up. We thawed it out and freezer seems to be working. We plug in frig and it seems to work fine for about 10 minutes. Then there is a click and frige light goes out and frige does not cool down. Unplug and plug back in and it runs for about 10 minutes and another click and light goes out again. Evaporator fan does not run. Someone said had to cool for some time before it would kick in. Tried a different evaporator fan with same result. Wiring diagram shows overload protection and PTC thermistor in series with frige lamp. Is this a relay problem, temp sensor or main control panel? How do I go about checking this out?
 

rickgburton

Appliance Tech - Moderator
Staff member
Joined
Jul 11, 2006
Messages
34,668
Location
Murray, Utah 84107, United States
If the click sound is coming from the compressor, the overload is opening. Check the compressor windings with a meter. If they check good replace the relay/overload. Here's how to check the compressor windings:
R -Compressor Windings Test A.jpg

Overload 6750C-0005P
Overload-6750C-0005P-01058524.jpg

Start Relay 6749C-0014E
Start-Relay-6749C-0014E--01906976.jpg
 

Realltor1

Premium Member
Joined
Oct 12, 2018
Messages
4
Location
Jackson, TN
Rick, my son is looking to get back to my refrigerator problem today. His continuity testing seemed to indicate parts are ok. He has some electrical knowledge but is not trained in appliance repair. When my compressor stops and I hear the click, the light inside the refrigerator also stops working. I am not finding this combo problem in any discussions. I think the evaporator motor is not the problem even though it is not running because we had another motor available and it did not help. I can order relay and overload protector, but the light problem still has me stumped. Would the light be inline with these so that it would kick out when the compressor stops? I don't want to be a part swapper but those two items are not too expensive. However I don't want to replace the control panel on a refrigerator that is this old. Thanks.
 

rickgburton

Appliance Tech - Moderator
Staff member
Joined
Jul 11, 2006
Messages
34,668
Location
Murray, Utah 84107, United States
The click is most likely not the overload but a relay on the control board.

The control board is the only thing common between the lights and compressor:
Main Control Board EBR41531306
Main-Control-Board-EBR41531306--01191306.jpg
 
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