LG Refrigerator not Cooling – Try this to Fix it!

Refrigerator is one of the most common appliance of every household. It has become a basic need of every household. Refrigerators have made things a lot easier like storing food and drinks. It becomes very easy to notice if something bad has happened with the refrigerator, like the issue of the refrigerator not cooling properly.

In this guide, we will show you the causes and the solutions of fixing an LG refrigerator that is not cooling as it should.

Causes of LG Refrigerator not Cooling

In the case of the Fridge compartment of LG’s refrigerator not cooling up, the main causes are as follows:

  • Bad Airflow
  • Malfunctioned Thermal Fuse
  • Heating Element issues
  • Malfunctioning Evaporator Fan

However, if both the compartments are not cooling up, then the issue is most likely due to the malfunctioning linear compressor or in some cases it might be due to the failure of start relay.

In other cases, the causes that may lead to insufficient cooling in the fridge are the following:

  • Failure of Start Relay
  • Malfunctioning Fan motor (Condenser and Evaporator)
  • Condensing coils not Cleaned Properly
  • Malfunctioning Temperature Control Thermostat

Solutions for LG Fridge Not Cooling:

Checking the Compressor of the LG Refrigerator

By this, we can draw the conclusion that the first thing that you need to do is to check the validity of the compressor of your refrigerator. For this purpose, follow these simple steps:

  • Plug off the refrigerator from the mains.
  • Turn it around to make the refrigerator back accessible to you.
  • Take out the back panel and check if the compressor is working properly or not.
  • In some cases, it might be running but not fulfilling its task of pumping refrigerant towards the refrigerator.
  • In the case of the compressor not working properly, consider replacing it.
  • Make sure to check if your warranty is still claimable or not, as most of the LG’s compressors come with a good 10 years warranty.

Fixing the Start Relay Failure Issue:

Start relay is a fundamental component of LG’s refrigerator. Start relay works with the compressor. So, if the start relay is defective, then it will lead to the malfunctioning of the compressor as well. So, it is crucial to check if this component is defective or not.

  • Turn off the refrigerator and take the its plug out from the source then flip it upside down to make the bottom of the machine accessible.
  • Remove the back panels.
  • At the bottom of the refrigerator, near the compressor, the start relay will be located.
  • You have to use a multimeter to test if it is defective or not. There has to be continuity between the start and the run terminals, otherwise the start relay is defective and needs replacement.
  • If the start relay turns out to be defective, contact the LG on how to get a new one.
  • Once you have the new one, plug it in and you are good to go.

Malfunctioning Condenser Fan Motor:

The purpose of condenser fan motor is to cool the air inside the LG refrigerator. It does so by moving the air around the condenser coils, which in turn cool the air. If this fan is not working properly, the required amount of cold will not be generated inside the machine.

  • Turn off the refrigerator and plug it out.
  • Make sure that the fan is not dirty enough that makes it difficult to turn. Clean it first.
  • Also, use a multimeter to test its continuity.
  • However, if the motor seems to be defective, then you need to call the LG to get a new one.
  • Install the new one in its place, once you have it.

Malfunctioning Evaporator Fan Motor:

The evaporator fan motor’s job is to direct the air towards the cooling coils and towards both the compartments of the refrigerator – the freezer and the refrigerator section. Hence, it requires proper airflow to do its work effectively, otherwise, the refrigerator will not be cooled enough.

Also, make sure to check the fan, if it is working properly or not. Clean it and use a multimeter as well to test it for continuity. If the motor seems to be defective, call LG and buy a new one. Here’s how you can install the new fan motor:

  • Turn off the machine and plug out its power cord.
  • Access the back of the refrigerator and take the motor out.
  • Install the new motor and that’s it!

Condenser Coils not Cleaned Properly

Condenser coils are responsible for the cooling of the refrigerator. These coils contain the refrigerant. The refrigerant is also a crucial component of a refrigerator.

If the condenser coils are dirty, then they will not be able to cool the system properly enough and remove its heat. If your LG refrigerator doesn’t seem to maintain the temperature selected by you, then it might be due to the problem with the condenser coils.

  • Turn off the refrigerator and flip the machine upside down.
  • The condenser coils are at the bottom of the machine.
  • If the condenser coils are dirty, clean them thoroughly.
  • If you have made the condenser coils wet during the cleaning process, then make sure to let them dry before turning the machine back on again.

Malfunctioning Temperature Control Thermostat

The flow of the power to various motors inside the LG refrigerator, namely the compressor and the condenser and the evaporator fans is controlled via the thermostat.

So, you can assume that a defective thermostat will result in the failure of either one or multiple motors that are crucial to the cooling of the refrigerator. Here’s how you can check if the thermostat requires replacement or not.

  • Plug off the machine from its mains.
  • Gain access to the bottom of the refrigerator. It can be located easily.
  • You must hear a click sound when you turn the knob, if not, then the thermostat is likely a faulty one. This is a quick test.
  • However, also make sure to use a multimeter to test it for continuity.
  • In case of a faulty thermostat, contact LG to get a new one.
  • Install the new one and then turn the refrigerator back on again.


These were the causes and the solutions to the issue of LG Refrigerator not cooling. Hopefully, your issue gets resolved after this. If you find any of these components nor working as they should and you don’t know how to get them replaced, then you should seek the help of a technician.