9 Reasons Why LG Refrigerator Not Cooling – Let’s Fix It

9 Reasons Why LG Refrigerator Not Cooling – Let’s Fix It

LG refrigerators are known for their quality and reliability, but like any appliance, they can encounter issues over time. One of the most frustrating problems you might face is when your LG refrigerator is not cooling correctly. After all, the primary job of a refrigerator is to keep your food fresh and cold. In today’s modern world, the refrigerator has become more than just a food storage unit; it’s a hub for leftovers, snacks, and beverages for the entire family.

When you notice that the temperature inside your LG fridge is not maintaining the desired level, it’s time to investigate. In this comprehensive guide, we will delve into the seven common reasons why your LG refrigerator might not be cooling as it should, and we’ll provide practical solutions to fix the issue.

1. Faulty Condenser Fan Motor

In LG refrigerators, a consistent and controlled flow of cool air is vital to maintaining the proper temperature within the appliance. The condenser fan assumes a crucial role in this cooling process. It’s primarily responsible for the circulation of air across the condenser coils, where heat exchange occurs, enabling the refrigeration cycle to function effectively. This cooling mechanism is essential for keeping the refrigerator’s interior cold and ensuring the preservation of your food items.

When problems arise, such as obstructions in the airflow or a malfunctioning fan motor, it can disrupt this critical process. A blocked airflow can cause the refrigerator to struggle to maintain the desired temperature, potentially resulting in inadequate cooling.

To diagnose and address this issue, it’s imperative to begin with safety precautions, ensuring the refrigerator is unplugged. Inspecting the fan for debris or obstructions and verifying that it rotates freely is the initial step. Additionally, using a multimeter to check the motor’s continuity can help pinpoint the problem. If these checks reveal issues with the condenser fan, contacting LG for a replacement and following a step-by-step replacement process is crucial to restoring proper cooling functionality to your LG refrigerator.

  1. Safety First: Always ensure the refrigerator is unplugged before conducting any maintenance.
  2. Inspect for Debris: Start by looking for any debris in or around the condenser fan. Ensure that it’s turning freely and isn’t obstructed.
  3. Check the Motor: Use a multimeter to check the motor’s continuity. If there’s an issue with the motor winding, it may need replacement.
  4. Replacement: If you suspect a faulty motor, contact LG for a replacement. Follow these steps to replace it: a. Remove the old condenser fan motor. b. Install the new one. c. Reassemble the refrigerator, ensuring all covers are closed and any disconnected water lines are reconnected. d. Plug in the power cord and return the fridge to its original position. e. Start the refrigerator and monitor the temperature.

2. Evaporator Fan Motor Not Working

Refrigerators typically have a single evaporator fan located in the freezer section. This fan is responsible for circulating cool air across the cooling coils and into both the freezer and refrigerator compartments. If it fails to move sufficient cool air, your refrigerator won’t maintain the desired temperature. Here’s how to troubleshoot this problem:

  1. Turn Off the Appliance: Always start by turning off the refrigerator.
  2. Locate the Evaporator Fan Motor: Find the evaporator fan motor in the freezer compartment.
  3. Check for Noise: If the fan is boisterous, it may be a sign that it needs replacement.
  4. Manually Rotate the Fan Blade: Try manually rotating the fan blade. If it’s stuck, this could be the issue.
  5. Test for Continuity: Use a multimeter to check for continuity in the fan motor. If it fails this test, you’ll need to replace the motor.

3. Faulty Compressor Start Relay

The compressor and the start relay are vital components of LG refrigerators’ cooling systems. A malfunctioning start relay can prevent the compressor from working correctly. To resolve this issue, follow these steps:

  1. Safety Precautions: Unplug the refrigerator and, if applicable, disconnect the waterline.
  2. Access the Relay: Locate the start relay near the compressor.
  3. Check for Continuity: Use a multimeter to test for continuity between the start and run terminals. If there’s no continuity, the relay is likely the problem.
  4. Replacement: Contact LG for guidance on replacing the start relay. After replacement, reconnect the refrigerator, plug it in, and turn it on.

4. Dirty Condensing Coils

Condenser coils play a crucial role in a refrigerator’s cooling process by removing heat from the air inside the fridge. If the coils become dirty, it can affect the refrigerator’s ability to maintain the correct temperature. To address this issue:

  1. Disconnect the Appliance: Unplug the refrigerator and, if necessary, disconnect the waterline.
  2. Access the Condenser Unit: Locate the condenser unit at the back of the fridge.
  3. Clean the Coils: Use a stiff brush or air hose to remove any debris from the coils. For hardened dirt, use a brush with soapy water or a scrubbing pad.
  4. Allow Drying: Ensure everything is dry before testing the refrigerator for cooling problems.

5. Defective Temperature Control Thermostat

The temperature control thermostat is a critical electrical component in a refrigerator that plays a central role in regulating its cooling system. It governs the operation of critical components like the evaporator fan, condenser fan, and compressor. When the thermostat malfunctions, it can disrupt the coordination of these elements, potentially causing the refrigerator to either overcook or not cool enough.

To identify if the thermostat is the source of the problem, a simple diagnostic test involves adjusting the thermostat knob and listening for a clicking sound, indicating its proper functionality. If no click is heard, it may signify a faulty thermostat, prompting the need for a replacement to restore the refrigerator’s cooling capabilities:

  1. Locate the Thermostat: Access the back of the refrigerator and locate the temperature control thermostat, typically at the bottom.
  2. Test for Functionality: Turn the thermostat knob and check for a clicking sound to ensure it’s functioning correctly.
  3. Replacement: If the thermostat is faulty, order a replacement part from LG. After installation, reconnect the refrigerator, plug it in, and test its functionality.

Defective Temperature Control Thermostat

6. Replace the Main Control Board

A defective main control board is not a common cause of cooling problems in LG refrigerators, but it can be a source of issues on rare occasions. This component acts as the brain of the appliance, coordinating various functions such as temperature regulation, defrost cycles, and fan operation. When it malfunctions, it can disrupt these crucial processes, leading to cooling problems.

Before considering a main control board replacement, it’s advisable to exhaust other troubleshooting methods mentioned in this guide. This includes checking the condenser and evaporator fans, the compressor start relay, and thermostat and cleaning the condenser coils. Often, these more straightforward solutions can resolve cooling issues.

However, if all other avenues have been explored and the refrigerator still fails to cool adequately, replacing the main control board may be necessary. It’s essential to exercise caution and consider consulting with a professional technician. They can accurately diagnose the problem and determine if replacing the main control board is a cost-effective solution.

In some cases, especially with older refrigerators, it might be more practical and economical to invest in a new appliance rather than costly repairs. Ultimately, the decision should be made based on the refrigerator’s age, overall condition, and the extent of the issue.

7. LG Fridge Making Noise Not Cooling

If your LG refrigerator is generating unusual noises and failing to cool, several potential factors could be contributing to the problem. Investigate the following possibilities:

  1. Evaporator Fan Motor: Ensure the fan motor is working correctly, and if not, replace it.
  2. Condenser Coils: Check for dirt or blockages in the condenser coils and clean or replace them as needed.
  3. Compressor: Verify that the compressor is functioning correctly and replace it if necessary.

8. LG Refrigerator Not Getting Cold

If your LG refrigerator is not reaching the desired cold temperature, consider these potential issues:

  1. Power Connection: Ensure the fridge is correctly plugged in, and confirm that the outlet is functioning.
  2. Temperature Settings: Check that the refrigerator is set to the appropriate temperature.
  3. Evaporator Coils: Regularly clean the evaporator coils to prevent frost buildup.
  4. Condenser Coils: Clean the condenser coils to maintain efficient heat removal.
  5. Consult a Professional: If all else fails, consider calling a repair technician to diagnose and resolve the problem.

9. LG Fridge Not Blowing Cold Air

When your LG fridge isn’t blowing cold air, several factors could be at play:

  1. Temperature Settings: Verify that the fridge is set to a colder temperature.
  2. Defrost Mode: Check if the refrigerator is in defrost mode and follow the owner’s manual to turn it off.
  3. Low Freon: If the fridge is low on Freon, contact a professional to recharge it.
  4. Dirty Condenser Coil: Clean the condenser coil to ensure proper airflow.
  5. Faulty Door Seal: Inspect the door seal for damage and replace it if necessary.


When faced with an LG refrigerator not cooling correctly, it’s essential to diagnose and address the underlying issue systematically. By following the steps outlined above, you can troubleshoot common problems and potentially restore your refrigerator’s cooling capabilities. However, if you encounter persistent issues or are unsure about the diagnosis, it’s advisable to seek professional assistance to ensure the longevity and efficiency of your LG refrigerator. Remember that proper maintenance and periodic cleaning are essential to prevent future cooling problems.


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