LG Refrigerator Freezing Up [How to Fix]

Having troubles with your LG refrigerator freezing up? Find answers on how to fix it by reading our article here.

LG refrigerator freezing up
Photo Credit: Walmart.com

LG Refrigerator Evaporator Coil Freezing Up – What to Do

If you find that the evaporator coil of your LG refrigerator is freezing up, take a look at any or all of the following:

1. Door Seals

Check the dependency of the door seals by closing the door of the refrigerator on a dollar bill. Then, try to pull it out without opening the unit’s door. If you can pull it out easily, the seals are bad and must be changed as soon as possible.

If the door seals are broken or are leaking, humid or warm air from outside will enter the refrigerator, go over the evaporator coils, condense on them and then freeze on them. And if this happens often, the coils will freeze up with time.

2. Defrost Thermostat

With a multimeter, test the thermostat for continuity. If you don’t find any continuity, replace the thermostat because it is faulty.

The defrost thermostat keeps an eye on the evaporator coils to know when they are cold enough. When they are, it allows the defrost heater to come on so the coils don’t get too cold. But if the thermostat can’t do this, the coils will freeze up.

3. Defrost Timer

Turn the timer using your hand or a flathead screwdriver. When you hear a click, the compressor and fans are supposed to shut off so the defrost heater will come on to defrost ice. If this happens, you know the timer is faulty and needs to be changed.

The defrost timer is supposed to advance into the defrost cycle a few times in a day. When it does, the heater comes on to defrost ice from the evaporator coils. But if the timer doesn’t work automatically, the heater will not come on and ice will build on the coils, freezing them up.

4. Defrost Heater

Test the continuity of the heater with a multimeter. If there is no continuity, then you know the heater is bad and should be replaced.

The timer and thermostat could be working fine but if the heater is defective, frost will build on the evaporator coils and cause them to freeze up.

Why Does My LG Refrigerator Keep Freezing Up?

Here are some reasons why your LG refrigerator keeps freezing up:

1. Temperature Control Thermostat

The temperature control thermostat is the part of the refrigerator that directs voltage to the fan motors and the compressor. If it is faulty, the refrigerant system could operate longer than it needs to, making the refrigerator become too cold.

Turn the thermostat from the lowest to the highest setting and listen for a click. If you don’t hear the click, test the thermostat for continuity with a multimeter. If there is no continuity, the thermostat is defective and should be replaced.

2. Thermistor

The thermistor reads the temperature of the air and sends its readings to the control board. With the readings, the control board is able to regulate power supply to the evaporator fan motor and the compressor so they can run. But if it is faulty, the fan and compressor will run too much and make the refrigerator too cold.

Test the continuity of the thermistor to see if it is faulty. Its resistance should change as the temperature of the refrigerator changes. But if the resistance doesn’t change and there is no continuity, change the thermistor.

3. Air Damper Control

The air damper controls the amount of cold air that goes into the refrigerator section. If it is slightly open or open all the way, too much cold air will get in and cause the section to freeze.

Take a look at it, between the freezer and the fresh food section. If there is no opening and closing, replace the damper.

There is a possibility the temperature control board or the main control board is the reason why your LG refrigerator keeps freezing up. But they are rarely faulty so it is important to check other parts first before checking any of the boards.

Here is a video showing how to fix or change the air damper…

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LG Refrigerator Ice Maker Freezing Up – Solutions

If your LG refrigerator ice maker freezes up frequently, then check the water inlet valve, fill tube or the water filter. You can also check the temperature of the refrigerator.

A faulty water inlet valve can cause water to overfill the ice cube tray. And when this happens, the water will freeze.

Also, check the screen filter of the valve to see if there is dirt on it. Remove it and clean it thoroughly so that it doesn’t push water back and fill the tray when it is not necessary.

A frozen fill tube will push water back and cause it to store where it shouldn’t be. If it is frozen, use hot water in a turkey baster to thaw it.

And if the water filter is due for a change, it can cause water to overflow the ice maker. Check if the filter needs changing or just change it to see if it solves the problem.

LG Bottom Freezer Freezing Up – What to Check

If your LG bottom freezer freezes up, here are things to check:


If the gasket of the door is weak or broken, the door will not close properly. Consequently, air will escape from the freezer and humid air will enter, causing frosting.

Additionally, check if the gasket is clean. If it is not, clean it with mild soap and warm water.

You can remove the frost by defrosting the freezer manually for a few hours.


Check the contents of the freezer. If you put hot food in it, it will melt the existing ice but will cause the melted ice to freeze up again, creating frost. Let food cool before putting it in the freezer.

Temperature Setting

Be sure you set the temperature of the freezer at the recommended place. Anything lower will cause the freezer to freeze more than it should.

Door Opening

Opening the freezer door too frequently will introduce humid air into the freezer. The humid will condense and freeze, leading to frost or ice buildup. Reduce the number of times the door is opened per day.

This video sheds more light on how to fix this freezing problem in the bottom freezer…

Important Note

It is important to unplug the refrigerator before you begin to any repair work or cleaning. Even if you want to check how well a part is functioning, cut the power supply to it. This is to avoid electrocuting yourself or causing any damage to the refrigerator.

LG Refrigerator Freezing Up – Related FAQs

LG Refrigerator Ice Maker Chute Keeps Freezing Up – Quick Fix

Check if there are ice cubes stuck in it or if it is just frozen. Use hot water to thaw it but be careful so that you don’t damage any part of the ice maker with hot water.

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