If your LG refrigerator is not cooling as it should be, then there is most likely a problem with one of the refrigerator’s components that will need to be fixed. But before you can fix the problem, you first need to find the cause. Show
In this article, we will cover all of the most common causes so you can diagnose the culprit. This article covers all major LG refrigerator models, including: LFX21976ST LFX25950SB LFX25950SW LFX25950TT LFX25976ST LFX25991ST LFX28978SB LFX28978SW LFX28979ST LFX31925ST LFX31935ST LFX31945ST LMX25984SW LMX25986ST LMX28988SB LMX28988ST LMX28988SW LRDC22743ST LRDC22744ST LRSC26980SB LSFS213ST Check if the Condenser Coils Are DirtyThe first component to check is the condenser coils. Their role is to dissipate heat when refrigerant goes through them. Sometimes they get dirty and this causes your refrigerator to not be able to cool properly. To check the condenser coils you need to:
Check the Condenser Fan MotorThe next component to check is the condenser fan motor. The purpose of the fan motor is to pull air through the condenser coils. When it stops working correctly, your fridge won’t cool. You can check the condenser fan motor by:
Check the Evaporator Fan MotorAnother possible cause of your LG refrigerator not cooling is a faulty evaporator fan motor. Depending on the exact model of your refrigerator, there will either be one or multiple evaporator fans. When they stop working, your refrigerator will not cool, as cold air is not being circulated from the freezer to the fridge. To check the evaporator fan motor:
Test the Start RelayIf you still haven’t solved the problem, then the next component to inspect is the start relay. This component of your refrigerator works with the start winding to make the compressor operate correctly. When it becomes faulty, the compressor will not work correctly, causing your refrigerator to not cool. You can check it by:
Check the Temperature Control ThermostatAnother possible cause of your refrigerator not cooling is a faulty temperature control thermostat. The thermostat is responsible for directing voltage to the evaporator fan motor, the compressor, and, if your fridge has one, the condenser fan motor. You can check the temperature control thermostat by:
Test the Start CapacitorThe start capacitor is another possible cause of a refrigerator not cooling. The start capacitor helps to power up the compressor when it starts up, and when it doesn’t work, the compressor will not be able to start, which results in your refrigerator not cooling correctly. You can check it by:
Test the ThermistorThe purpose of the thermistor is to monitor the temperature in the refrigerator and then communicate it to the control board. When it becomes defective, it will cause other components in the refrigerator to not work correctly. The best way to check if it is faulty is to:
Check the CompressorThe next component to check is the compressor. The compressor is a pump that compresses the refrigerant and then circulates it through the evaporator and condenser coils. When it becomes faulty, the cooling system will stop working as it should. It’s quite an uncommon cause of the problem, so check all of the other possible causes first. You can check the compressor by:
Check the Temperature Control BoardThe temperature control board is another possible cause of the problem (albeit not a common one). This component provides the required voltage to the compressor and the fan motors, and when it becomes defective, it will stop the cooling system from working correctly. Unfortunately, the temperature control board is difficult to test, so if you have tried all of the other components listed above, you should consider replacing the temperature control board and seeing if that solves the problem. Replace the Main Control BoardIf you have checked every other component above and still haven’t found anything wrong, then the final action to take is to replace the main control board. It is quite uncommon for this to be the cause, but it can happen. Why is my LG refrigerator not cooling?This new generation of linear compressors on LG refrigerators didn’t prove themself as reliable. They fail quite often. So, if you have a refrigerator not cooling at all in both the freezer and fridge compartment, then you need to pull out the fridge from its place, remove the back panel and listen to if the compressor is running or not.
How do I know if my LG refrigerator compressor is bad?If you have your compressor running (you can tell by listening to the compressor), but not cooling at all, this is the first symptom that the compressor is failed. Why LG Refrigerator Is Not Cooling After Power Outage?
Why is my linear compressor refrigerator not cooling?Apart from defective components, some of these practices may cause your linear compressor fridge to stop cooling: Setting the refrigerator temperature warmer than what the refrigerator requires. The manufacturer recommends 37 degrees Fahrenheit for the refrigerator and 0 degrees Fahrenheit for the freezer compartment. Obstructing the cooling vents.
Is your LG refrigerator compressor humming?Otherwise, the refrigerator will require a service repair. Similarly, the humming noise should not last more than 1 hour either. And if the humming/buzzing noise is so loud that you can hear it from another room, your refrigerator requires servicing. Here are things you should check when your LG refrigerator compressor is hot to the touch: 1.
Why is fridge compressor running but not cooling?If you can hear the compressor running but the fridge isn't cooling, the problem is most likely either frost-clogged evaporator coils or a stuck or broken evaporator fan. Evaporator fans often squeal or chirp when they start to go bad.
How do I know if my LG refrigerator compressor is bad?The compressor itself located the back panel at the bottom of the refrigerator. Disconnect this box and shake it to see if it rattles. If it makes a rattling sound, it is most likely faulty. Also, use a multimeter to check it for continuity.
How do I run diagnostics on my LG refrigerator?Lock the control panel by holding the lock button for 3 seconds. Once locked, open the right side refrigerator door.. On your phone, press the SETTINGS button.. Press SMART DIAGNOSIS button.. Select the START SMART DIAGNOSIS option.. Why is my refrigerator not cooling?There are several causes for a refrigerator that doesn't cool, including dirty condenser coils, poor ventilation, improper installation, faulty or dirty gasket seals, unorganized food storage, appliance location and malfunctioning internal parts.
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