Why LG Refrigerator Is Not Cooling? Troubleshooting Guide + Service Manual

The refrigerator is the largest and the most important of all kitchen appliances in your home. It is where you store all of your perishable food items before you prepare your meals. It is also where you store leftovers and beverages for the family.

Unfortunately, there will come a time when something goes wrong and you notice that the interior temperature is not staying where it is supposed to.

Below are some common causes of why an LG refrigerator is not cooling.

Failed Inverter Linear Compressor

If your LG refrigerator is not cooling in both compartments, this cooling problem is common for double door (french door) refrigerators and in 90% of cases is related to a failed inverter linear compressor and in 10% of cases to a failed start relay. If the freezer is still cold but the fridge section is warming up, this problem in 80% of cases is caused by restricted airflow, due to burnt defrost thermal fuse, defrost heating element, or failed evaporator fan.

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 lower panel and listen, to determine whether the compressor is running or not.

If you hear the compressor is running, but not cooling, then you have a failed compressor. In other words, it’s not pumping refrigerant in the sealed system in order to cool down the refrigerator.

But the good thing is, most of these LG compressors have 10 years warranty. So check your warranty first and then call LG Customer Service 1-888-542-2623 for help.

Compressor Start relay failed (If Not Linear Compressor)

In an LG refrigerator, the start relay is a very important part of the cooling system.

It works in conjunction with the compressor unit of the refrigerator and if it is not working properly or not working at all it will prevent the compressor unit from working properly or not at all.

You will need to gain access to the bottom part of the refrigerator by opening the back access panels.

The first thing is you need to do is pull out the refrigerator so that you can unplug it from the outlet and disconnect the water line if attached.

Move the refrigerator to a position that will allow you to open the back access panels.

The start relay will be at the bottom of the unit near the compressor, using a multimeter you need to test the relay for continuity between the start and run terminals if you don’t have continuity you will need to replace the relay.

Contact LG to find out about getting a new start relay . After getting the new part, replace it and button everything back up and plug the unit in and reconnect the water line if it was disconnected.

Check to see if the compressor is running normally.

The refrigerator is the largest and the most important of all kitchen appliances in your home. It is where you store all of your perishable food items before you prepare your meals. It is also where you store leftovers and beverages for the family.

Unfortunately, there will come a time when something goes wrong and you notice that the interior temperature is not staying where it is supposed to.

Below are some common causes of why an LG refrigerator is not cooling.

Failed Inverter Linear Compressor

If your LG refrigerator is not cooling in both compartments, this cooling problem is common for double door (french door) refrigerators and in 90% of cases is related to a failed inverter linear compressor and in 10% of cases to a failed start relay. If the freezer is still cold but the fridge section is warming up, this problem in 80% of cases is caused by restricted airflow, due to burnt defrost thermal fuse, defrost heating element, or failed evaporator fan.

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 lower panel and listen, to determine whether the compressor is running or not.

If you hear the compressor is running, but not cooling, then you have a failed compressor. In other words, it’s not pumping refrigerant in the sealed system in order to cool down the refrigerator.

But the good thing is, most of these LG compressors have 10 years warranty. So check your warranty first and then call LG Customer Service 1-888-542-2623 for help.

Compressor Start relay failed (If Not Linear Compressor)

In an LG refrigerator, the start relay is a very important part of the cooling system.

It works in conjunction with the compressor unit of the refrigerator and if it is not working properly or not working at all it will prevent the compressor unit from working properly or not at all.

You will need to gain access to the bottom part of the refrigerator by opening the back access panels.

The first thing is you need to do is pull out the refrigerator so that you can unplug it from the outlet and disconnect the water line if attached.

Move the refrigerator to a position that will allow you to open the back access panels.

The start relay will be at the bottom of the unit near the compressor, using a multimeter you need to test the relay for continuity between the start and run terminals if you don’t have continuity you will need to replace the relay.

Contact LG to find out about getting a new start relay . After getting the new part, replace it and button everything back up and plug the unit in and reconnect the water line if it was disconnected.

Check to see if the compressor is running normally.