The first reason your LG refrigerator is not cooling is that the condenser coils are dirty. The condenser coils assist in cooling the refrigerator by cooling the warm air beneath it. When they become dirty, they are unable to perform their duties properly.
In the modern era, the refrigerator serves as more than a storage space for perishable food items.
Additionally, it serves as a storage area for leftovers and a place to stock beverages for the family. The most vital of all kitchen appliances – and probably the largest as well!wp_under_first_paragraph - under_first_paragraph -->
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This is one instance where a situation can be extremely discouraging. You notice that the temperature in your LG refrigerator is fluctuating. What could possibly be wrong? To that end, the following are some common reasons why your LG refrigerator is not cooling.
6 Reasons Why LG Refrigerator Not Cooling and Fix!
Faulty Condenser Fan Motor
LG, a well-known manufacturer of home appliances, uses a continuous flow of cool air to cool its products.
The condenser fan is a critical component of this; it moves air across the coils that cool the air. If airflow is restricted or nonexistent, the condenser fan blades may be dirty or the fan motor may be broken.
Ensure that the power is turned off before attempting to work on anything that requires electricity.
The first step is to check for debris in or around the fan and to ensure it is turning freely. Then, using a multimeter, check the motor for continuity to determine if the problem is with the motor winding.
If you believe the problem is with the motor, you must contact LG to obtain a replacement.
Replace your refrigerator’s condenser fan motor by following these steps:
- Remove the previous component.
- Replace it with the new one
- Close all covers and, if necessary, reconnect the water line.
- Connect the power cord.
- Return the refrigerator to its original location.
- Begin by turning on the refrigerator and allowing it to cool.
- Conduct a temperature check.
Faulty Evaporator Fan Motor
Many refrigerators feature a single evaporator fan located on the back of the freezer section. By circulating air across the cooling coils and into the freezer and refrigerator sections, this fan cools them.
If the refrigerator is not moving enough cool air, it will struggle to keep the freezer and refrigerator sections cool.
To inspect the Evaporator Fan Motor, perform the following steps:
- Turn off the appliance and look inside the freezer compartment for the evaporator fan motor.
- If the fan is excessively noisy, it should be replaced.
- Turn the fan blade manually if it is not noisy. Replace the evaporator fan motor if the blade becomes stuck.
- Conduct a continuity check on the fan motor; if it fails, the motor must be replaced.
How to test the motor is as follows:
- Check that the blade is turning in the opposite direction.
- Connect the motor to the multimeter and verify continuity. If it does, this indicates that your motor is operating normally and is not the source of the problem. If the motor lacks continuity, it must be replaced.
Linear Inverter Compressor Failed
LG refrigerators are engineered to maintain a constant temperature regardless of the number of compartments.
However, if your refrigerator is not cooling properly, you may encounter a few issues. If the refrigerator is warm but the freezer remains cold, the issue is restricted airflow.
This could be caused by a blown defrost thermal fuse or a failed evaporator fan. If the refrigerator and freezer are both warm, it is possible that your faulty product has a failed inverter linear compressor or start relay.
LG refrigerators upgraded their compressors and rigorously tested them for reliability. LG’s new generations of refrigerators address common issues such as insufficient cooling and frequent breakage.
If your refrigerator is not cooling at all, you should remove it from its location, remove the back panel, and check to see if the compressor is running.
If you hear your refrigerator running but it is not cooling, the compressor is most likely broken. Typically, this indicates that it is not pumping refrigerant to cool the refrigerator.
Fortunately, the majority of LG compressors come with a ten-year warranty.
Therefore, before proceeding, double-check your warranty coverage and contact LG Customer Service.
Faulty Start Relay for Compressor
The cooling system of LG refrigerators is comprised of two critical components: the compressor and the start relay. When it is not functioning properly, it will obstruct the compressor’s operation as well.
To repair it, you’ll need to open the back panels of your LG refrigerator and gain access to the refrigerator’s bottom.
- The first step is to unplug the refrigerator. Following that, if your refrigerator is equipped with a water line, disconnect it.
- Then move the refrigerator to make room for the back compartment.
- The compressor’s start relay is located nearby. We’ll check for continuity between the start and run terminals using a multimeter. If there isn’t, the relay will need to be replaced.
- It’s time to contact LG to learn how to replace the start relay on your refrigerator. Don’t forget to button everything back up and reconnect the water line if it was disconnected after replacing the part.
After you’ve completed those steps, plug the unit in and power it on.
Condensing Coils That Are Filthy
The condenser coils of a refrigerator are the most critical component. They contain and circulate the coolant through the coils.
The coolant extracts heat from the refrigerator’s air, while the coils extract heat from the refrigerator’s interior.
Condenser units are critical for maintaining the proper temperature in the refrigerator. If you notice that it is excessively hot, there may be a problem with the condenser unit or the coils may require cleaning.
To access the condenser unit, you must open the back of the refrigerator from the bottom.
If you need to relocate this appliance, unplug it and cut off the water supply. Ensure that the unit is completely disconnected and unplugged before beginning the inspection.
If the coils are dirty, we recommend using a stiff brush or an air hose to remove any debris. To remove hardened dirt, use a brush dipped in soapy water or a scrubbing pad.
Before testing the LG refrigerator for cooling issues, you should ensure that everything is completely dry.
Faulty Thermostat for Temperature Control
The thermostat is one of the LG refrigerator’s electrical components. It assists in determining the operation of the three cooling components (evaporator fan, condenser fan, and compressor).
If it is not functioning properly, one or more of these components will fail to function properly.
If you believe the problem is with the temperature control thermostat, you’ll need to access the unit’s back. The thermostat will be located at the bottom of the unit.
To determine if it is functioning properly, turn the knob and listen for a click.
When adjusting your thermostat, you want to ensure that it is operating properly. This is a precautionary measure to ensure that the thermostat operates normally as you turn the knob.
If the thermostat is defective, contact LG to order a replacement part for your refrigerator.
Once you’ve installed the replacement part and reassembled, reconnected, and plugged in the unit, test it to ensure it’s working properly.
Substitute a new main control board
If your refrigerator is not cooling properly, it is possible that the main control board needs to be replaced.
This is a rare occurrence, but it does occur. And, if all else fails, replacing the main control board may be the best option.
However, you may be better off simply purchasing a new refrigerator.
Capacitor for Initialization
A faulty start capacitor is another possible cause of your refrigerator not cooling. This component assists the compressor in starting by providing it with a boost of power.
To inspect the start capacitor, follow these steps:
- Ascertain that the refrigerator remains turned off.
- Locate and test the start capacitor with a multimeter.
If there is continuity, it is operating properly; if not, it should be replaced.
The thermistor is the next component to inspect. The thermistor is responsible for monitoring the temperature in your refrigerator and transmitting the readings to the main control board.
When it fails, it sends incorrect readings, preventing your refrigerator from cooling to the proper temperature.
To inspect the thermistor, follow these steps:
- Ascertain that the refrigerator has not been turned off.
- Locate the thermistor and then test it with the multimeter.
If the resistance of the thermistor does not change or if it does not have continuity, it must be replaced. If the multimeter test indicates that it is operating normally, you can proceed to the next component.
Compressing the refrigerant and circulating it through the evaporator and condenser coils is the compressor’s function.
When the compressor fails to operate properly, your refrigerator will be unable to cool properly.
Although the compressor does not fail frequently, if you have tested all of the other components mentioned previously, you should then test the compressor:
- Ascertain that the refrigerator remains turned off.
- Locate the compressor and then test it for continuity with the multimeter (you need to test between the electrical pins that you can find on the side of the compressor).
- Replace the compressor if an open circuit is discovered during testing. Make no attempt at this repair unless you are qualified.
Alternately, you can replace the Temperature Control Board.
Replace the Temperature Control Board
If the cause of the problem is still unknown, you can replace the temperature control board.
Although this component is extremely rarely the source of the problem, if you’ve exhausted all other possibilities, consider replacing the control board.
Once replaced, verify that the issue has been resolved.
Main Control Board Replacement
Finally, you can replace the primary control board. Although a faulty main control board is a very rare cause of a refrigerator failing to cool properly, it does happen.
If all other options have been exhausted, consider replacing the main control board.
However, you may be better off investing in a new refrigerator.
LG Refrigerator Isn’t Cooling Or Freezing Inverter
Failed Inverter Linear Compressor
If your LG refrigerator is not cooling evenly in both compartments, this is a common cooling issue with double door (french door) refrigerators and is 90% of the time caused by a failed inverter linear compressor and 10% by a failed start relay.
If the freezer remains cold but the refrigerator section begins to warm up, this is almost always the result of restricted airflow caused by a burned defrost thermal fuse, defrost heating element, or failed evaporator fan.
This new generation of linear compressors used in LG refrigerators did not prove to be as reliable as the previous generation. They frequently fail.
Therefore, if your refrigerator is not cooling properly in both the freezer and fridge compartments, you should remove it from its mounting bracket, remove the back panel, and listen to determine whether the compressor is running or not.
If the compressor is running but not cooling, it is likely that the compressor has failed. That is, it is not pumping refrigerant through the sealed system to cool the refrigerator.
However, the good news is that the majority of these LG compressors come with a ten-year warranty.
Therefore, verify your warranty first and then contact LG Customer Service at 1-888-542-2623 for assistance.
Compressor Start Relay Failed (If Not Linear Compressor)
The start relay is a critical component of the cooling system in an LG refrigerator.
It works in conjunction with the refrigerator’s compressor unit, and if it is not functioning properly or at all, it will prevent the compressor unit from functioning properly or at all.
To gain access to the refrigerator’s bottom section, open the back access panels.
The first step is to pull out the refrigerator and unplug it from the outlet, as well as disconnecting any attached water lines.
Reposition the refrigerator so that the back access panels are accessible.
The start relay will be located near the compressor at the bottom of the unit; using a multimeter, test the relay for continuity between the start and run terminals. If there is no continuity, the relay must be replaced.
Contact LG to learn how to obtain a replacement start relay. Replacing the part requires re-buttoning everything, plugging the unit in and reconnecting the water line if it was disconnected.
Verify that the compressor is operating normally.
LG Refrigerator Is Not Cooling Enough But Freezer Is Working
Dirty Condenser Coil
The condenser coils are the most critical component of the refrigerator’s cooling system.
The condenser contains the refrigerant and circulates the coolant inside the coils.
Within the refrigerator, air flows across the condenser coils, which removes heat.
Therefore, if you notice that the temperature inside the refrigerator is not maintaining the set temperature, it is possible that the condenser unit is malfunctioning or that the coils are dirty.
The condenser unit is located at the bottom of the refrigerator and is accessed through the unit’s back.
If you need to move the unit too far, unplug it from the wall and disconnect the water line.
After inspecting the condenser unit and determining that the coils are indeed dirty, you can easily remove any debris with a stiff brush, compressed air, or, for particularly caked-on dirt, soapy water and the brush.
If you use water, make certain that everything dries completely before testing.
Condenser Fan Motor Not Working
The circulation of cool air is critical to the LG refrigerator cooling system.
A significant component of this is the condenser fan, which circulates air across the condenser coils, which cool the air.
If you suspect that airflow is being reduced or is completely absent, the fan blades may be obstructed or the fan motor may be defective.
Always check to ensure that the power is turned off before attempting to work on anything that requires electricity.
To begin, ensure that the fan is spinning freely and is free of debris. If everything appears to be in order, you should use a multimeter to check the motor for continuity.
If you determine that the problem is with the motor windings, you must contact LG to obtain a replacement motor.
After obtaining the replacement part, remove the old fan motor and replace it with the new fan motor.
Once the repairs are complete, replace all covers, reconnect the water line if necessary, reconnect the power cord, and reinstall the refrigerator.
Allow time for the unit to begin cooling and then check to see if it has cooled to the proper setting.
Evaporator Fan Motor Not Working
The evaporator fan circulates air across the cooling coils and into the refrigerator’s freezer and refrigerator compartments.
The evaporator system in the majority of refrigerators is a single unit located behind the freezer section.
If the air does not circulate properly, neither of the sections will remain cool enough.
Always check to ensure that the fan is spinning freely and is not clogged with debris.
If the fan does not turn, you most likely have a defective evaporator fan motor.
You can use a multimeter to check for bad internal windings and continuity on the motor.
If there is evidence that the windings are faulty, you will need to contact LG to obtain a replacement evaporator fan motor.
If you need to replace the fan motor, unplug the power cord and, if necessary, disconnect the water line.
Gain access to the refrigerator’s back to inspect the evaporator motor.
Disconnect the motor’s power leads and unscrew the mounting bolts that secure the motor in place.
Remove the old motor and replace it with the new one. Reassemble everything and reconnect the unit.
Thermostat for Temperature Control Is Not Working
The thermostat is a critical component of the LG refrigerator’s electrical system because it regulates the flow of power to the cooling system’s motors (evaporator fan, condenser fan, and compressor).
If it is not functioning properly, one or more components of the cooling system will be rendered inoperable.
If you suspect the temperature control thermostat is the source of the problem, you must gain access to the unit’s back.
The thermostat will be conveniently located at the bottom of the unit. Turn the knob to check for operation; if it clicks, the thermostat is likely operational.
However, to be certain, you should check for continuity as you turn the knob.
If the thermostat is defective, contact LG and place an order for a replacement part for your refrigerator model.
Once you’ve installed the replacement part and reconnected the water line (if necessary), plug the unit back in and test it.
LG Refrigerator Not Cooling And No Error Code
If your refrigerator displays no error codes but is not cooling, this indicates that the main control board’s internal sensors are unable to detect problems.
This is a frequent issue with LG Linear Compressors. It appears to be operating but is not producing any cold.
How Do I Know If LG Refrigerator Compressor Is Bad?
If your compressor is running (as indicated by the compressor’s sound) but not cooling at all, this is the first indication that the compressor has failed.
Why LG Refrigerator Is Not Cooling After Power Outage?
One of the reasons the refrigerator ceased cooling following the power outage is a failure of the main control board caused by voltage spikes.
You can attempt to reset power by flipping the breaker, but if this does not resolve the cooling issue, the control board is faulty and you should contact a repair technician.
Is There A RESET Button On A LG Refrigerator?
To reset an LG refrigerator, turn off the power for two minutes. This procedure will restore the main control board/motherboard to its factory default settings.
If the first recommendation does not work, the LG refrigerator’s control board most likely includes a TEST button on the back of the refrigerator. Please refer to the service manual above or watch the video below to perform this procedure.
Additionally, if you own an LG Instaview Refrigerator, you can run the Smart Diagnosis Test.
Is There A Recall On LG Refrigerators Or Lawsuit Against LG ?
LG refrigerators with linear compressor failure are being recalled beginning September 23, 2020. The recall covers refrigerators purchased between 2014 and 2017.
If your refrigerator is experiencing a No-Cooling event, please contact LG Fridge Settlement at https://www.lgfridgesettlement.com/.
LG Refrigerator Problems (Mostly Affected Models)
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