LG makes some of the best refrigerators on the market, but sometimes they can break down. One of the most common problems people have with their refrigerators is when they won’t cool properly.
This is incredibly annoying, especially since the main job of a refrigerator is to keep your food and drinks cold!
Fortunately, it could be caused by something quite simple to fix.
This guide covers the following LG refrigerator models:
LFX21976ST
LFX25950SB
LFX25950SW
LFX25950TT
LFX25976ST
LFX25991ST
LFX28978SB
LFX28978SW
LFX28979ST
LFX31925ST
LFX31935ST
LFX31945ST
LMX25984SW
LMX25986ST
LMX28988SB
LMX28988ST
LMX28988SW
LRDC22743ST
LRDC22744ST
LRSC26980SB
LSFS213ST
The first possible cause of your LG refrigerator not cooling is dirty condenser coils. The condenser coils help to keep the fridge cool by cooling the warm air underneath the fridge. When they get dirty, they won’t do their job correctly.
To check the condenser coils:
The next part to check is the condenser fan motor. This component helps draw air over the condenser coil and the compressor. If it stops working as it should, the refrigerator will not be able to stay cool.
To check the motor:
The purpose of the evaporator fan motor is to circulate air over the evaporator coils and then into the refrigerator and freezer compartments. When it stops working correctly, the refrigerator is unable to cool down properly.
To check the fan motor:
The next possible cause to investigate is a faulty start relay. The purpose of the start relay is to work with the start winding to start the compressor up. When it is faulty, the compressor is unable to start up.
To check the start relay:
This component sends voltage to the refrigerator’s compressor, the evaporator fan motor, and the condenser fan motor. If it becomes faulty, your refrigerator won’t run correctly.
To check the thermostat:
Another possible cause of your refrigerator not cooling is a faulty start capacitor. This component helps the compressor start up by sending a boost of power to it.
To check the start capacitor:
The next component to inspect is the thermistor. The thermistor is what monitors the temperature in your fridge and then sends the temperature readings to the main control board. When it becomes faulty, it will send incorrect readings, and thus your refrigerator won’t cool down to the correct temperature.
To check the thermistor:
The role of the compressor is to compress the refrigerant and circulate it through the evaporator and condenser coils. When the compressor stops working, your refrigerator will not be able to cool correctly.
The compressor doesn’t break down very often, but if you’ve tested all of the other components above, you should then test the compressor:
If you still haven’t found the cause of the problem, you can replace the temperature control board. This component is very rarely the cause of the problem, but if you’ve tried everything else, consider replacing the control board. Once replaced, check if the problem has been solved.
Your final option is to replace the main control board. A faulty main control board is very rarely the cause of a refrigerator not cooling properly, but it can happen. If you’ve tried everything else, consider replacing the main control board. However, you might be better off simply purchasing a brand-new refrigerator.
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