Refrigerator does not cool, what could be possible problem.
There could be several things that could be wrong with the unit not cooling. The first thing that you will want to check if it is just the refrigerator section that is not cooling would be look for a defrost issue. Check the coils in the freezer compartment and make sure that the coils are not clogged with ice. If they are then the issue would be either with the defrost heater, defrost controller or the control board.
To replace a bad relay, what should I have to replace together? My LG Model No. is LSC27931ST.
The part numbers that you will want to replace if the relay is bad is the relay [EBG42993602] and the overload EAF39584205.