10 Reasons Why LG Freezer Not Freezing/Working

10 Reasons Why LG Freezer Not Freezing/Working

If your LG freezer isn’t performing as expected, you’re not alone in facing this issue. Many users encounter problems with their LG freezers not freezing or working correctly. However, fret not because most problems can be resolved with troubleshooting and possibly minor repairs.

This comprehensive guide will explore the ten common reasons why your LG freezer might not be freezing or working correctly. We’ll delve into each issue, discuss why it occurs, and provide practical solutions to help you get your freezer back in working order. So, let’s get started on the path to a fully functional LG freezer!

1. Compressor Issues

The compressor in a refrigerator is a crucial component responsible for circulating refrigerant through coils to facilitate the cooling process. When the compressor malfunctions, it disrupts this vital circulation, causing the refrigerator to struggle to maintain the desired low temperature. As the compressor fails to compress and circulate the refrigerant, heat removal becomes inefficient, leading to inadequate cooling within the fridge.

This malfunction often results from insufficient ventilation or frost buildup on the coils. Identifying and promptly addressing compressor issues is essential to ensure the refrigerator’s proper functioning and prevent food spoilage due to inadequate cooling.

Why Does It Fail?

Several factors can lead to compressor failure. Inadequate ventilation is a frequent culprit, causing the compressor to overheat and eventually break down. Another common reason is frost buildup on the coils, which can occur due to improper sealing or prolonged door openings.

How To Diagnose And Fix It

  • Check if the compressor is running by listening to a humming noise at the back of the fridge.
  • Ensure the refrigerator is plugged in and receiving power.
  • Feel for heat around the compressor; if it’s warm, it’s likely functioning.

To resolve the issue, start by addressing ventilation problems. Clear any obstructions around the fridge’s vents. If no blockages exist, defrosting the coils by unplugging the refrigerator for a few hours might be necessary. If the compressor is faulty, it’s a complex repair that is best left to experienced technicians.

2. Dirty Condenser Coils

Condenser coils are a vital part of a refrigerator’s cooling system, which releases heat from the appliance. When these coils accumulate dirt and debris over time, their efficiency is compromised, leading to a significant challenge in maintaining a cool temperature inside the fridge. As the coils become dirty, they struggle to release heat effectively, causing the refrigerator to work harder and longer to maintain the desired low temperature.

This increased workload can reduce cooling performance, increase energy consumption, and cause overheating issues. Regular cleaning and maintenance of the condenser coils are essential to ensure optimal cooling efficiency and prolong the refrigerator’s life.

Why Does It Happen?

Condenser coils accumulate dirt and debris over time, hindering their heat dissipation capability.

How To Address It

To clean the condenser coils, remove them from the back of the fridge and vacuum or brush away the accumulated dirt and debris. Replace them if needed, ensuring you select the correct size and type based on your fridge’s model.

3. Clogged Evaporator Coils

The evaporator coils, located within the refrigerator’s freezer section, serve a critical role in the cooling process by absorbing heat from the surrounding air. When these coils become clogged with dust, debris, or frost, their ability to effectively absorb heat is impaired. This obstruction hinders the freezer’s capacity to maintain a consistently cold temperature.

As the evaporator coils struggle to remove heat efficiently, the freezer works harder, resulting in inadequate cooling. It may lead to temperature fluctuations, ice buildup, and reduced overall freezing performance. Periodic cleaning and proper maintenance of these coils are essential to ensure optimal freezing conditions within the freezer.

Why Does It Occur?

Dust and debris buildup on the evaporator coils can hinder their heat absorption capabilities, causing the freezer to work inefficiently.

How To Resolve It

Cleaning the coils is the first step. Remove them, gently brush off any dirt or dust, or use a vacuum cleaner with a soft brush attachment. After cleaning, ensure the freezer door is sealed tightly. If cleaning doesn’t solve the problem, consider replacing the evaporator coils available at most hardware stores.

4. Faulty Condenser Fan Motor

The condenser fan motor draws air over the condenser coils and the compressor. A defective condenser fan motor can disrupt the cooling process.

Why Does It Fail?

The condenser fan motor can fail due to a defective capacitor or damaged fan blades.

How To Diagnose And Repair It

Check the evaporator coils in the freezer for frost buildup, and the condenser coils in the fridge for dirt. If these are not the issues, examine the condenser fan motor for defects. Replacing the condenser fan motor is a relatively straightforward DIY repair. Unplug the fridge, remove the screws holding the engine in place, replace the old machine with a new one, and reassemble.

5. Malfunctioning Evaporator Fan Motor

The evaporator fan motor circulates air over the evaporator coils within the freezer. A malfunctioning fan motor can lead to inadequate cooling in the freezer.

Malfunctioning Evaporator Fan Motor

Why Does It Fail?

Over time, the evaporator fan motor can wear out, reducing its efficiency.


Ineffective cooling in the freezer can be a sign of a faulty evaporator fan motor.

How To Diagnose And Replace It

Ensure power goes to the fan motor, and check the evaporator coils for frost buildup. Inspect the evaporator fan motor to see if these checks don’t reveal any issues. Replacing the evaporator fan motor is a manageable DIY task. Unplug the freezer, remove the old engine, install the new one, and reconnect the wires.

6. Main Control Board Problems

The main control board acts as the brain of your refrigerator. If it malfunctions, your fridge’s overall functionality will be compromised.

Why Does It Fail?

Power surges or overloading can cause the main control board to fail.

How To Test It

Diagnosing the main control board can be challenging and typically requires a multimeter to test for continuity. If you’re uncomfortable with this, consider seeking professional assistance.

How To Replace It

Order a replacement main control board from LG, ensuring you have the correct model number. Follow your owner’s manual instructions to install the new board, being cautious not to touch the electronic components.

7. Sealed System Leak

When your freezer isn’t working, and all power-related issues are ruled out, a sealed system leak becomes a likely culprit. This occurs when there’s a breach in the hermetic seal that contains the refrigerant, potentially due to damage in the evaporator, condenser, or compressor.

If you suspect a sealed system leak, it’s best to enlist the services of a professional. Identifying and repairing such leaks can be complex and hazardous without the proper training and tools. Consider using a stop-leak refrigerant as a temporary measure to seal minor leaks. However, this is a short-term solution, and professional repair remains necessary.

8. Start Relay Troubles

The start relay is an electromagnetic switch that sends power to the compressor, aiding in its startup and continuous operation. A faulty start relay can lead to compressor failure and inadequate cooling in your freezer.

Why Does It Fail?

Start relays can fail when the compressor tries to draw excessive current, causing the relay’s coil to overheat and fail.

How To Test And Replace It

Use a multimeter to test the start relay for continuity. If the reading is infinite, the start relay is defective and requires replacement. Replacing the start relay is a straightforward procedure. Unplug the freezer, remove the old relay, and install the new one following the reverse removal order.

9. Temperature Control Thermostat Issues

The temperature control thermostat regulates the freezer’s internal temperature. When it malfunctions, it can result in insufficient cooling.

Why Does It Fail?

Wear and tear or accumulation of dirt and debris are common reasons for thermostat failure.

How To Address It

  • Clean the thermostat to remove dirt and debris hindering its function.
  • Try adjusting the thermostat to a slightly higher setting to improve cooling.
  • If neither solution works, consider replacing the temperature control thermostat, a manageable DIY task.

10. User Control And Display Board Malfunctions

The user control and display board serve as the interface for your refrigerator’s settings. When it malfunctions, it can lead to various operational issues.

Why Does It Fail?

Factors such as power surges, aging, or physical damage can cause this board to malfunction.

How To Test And Replace It

Use a multimeter to test the board for continuity. If no continuity is detected, you’ll need to replace it. Replacing the user control and display board is relatively straightforward. Ensure you have the correct replacement part based on your fridge’s model number, then follow your owner’s manual for installation instructions.


Stay energized if your LG freezer isn’t freezing or working correctly. We’ve covered many potential issues, their causes, and practical solutions to help you troubleshoot and repair them. Whether addressing compressor or motor issues, cleaning coils, or replacing faulty components, you know how to tackle these problems.

If your DIY efforts don’t resolve the issue, feel free to seek professional assistance. With determination and the right approach, your LG freezer will soon run smoothly again. We hope this comprehensive guide has been instrumental in assisting you with your freezer troubleshooting journey. If you have any additional tips or insights, please share them in the comments below!


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