Here Is Why LG Refrigerator Is Not Cooling

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The refrigerator is the largest and the most important of all kitchen appliances in your home.

It is where you store all of your perishable food items before you prepare your meals.

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It is also where you store leftovers and the beverages for the family.

Unfortunately, there will come a time when something goes wrong and you notice that the interior temperature is not staying where it is supposed to.

Below are some common causes of why an LG refrigerator is not cooling.

Before starting with less common causes, let me tell you about one of the big issues with LG refrigerators. Its INVERTER LINEAR COMPRESSOR Failure.

These new generations of compressors on LG refrigerators didn’t prove themself as reliable. They fail very often.

So, if you have a refrigerator not cooling at all in both the freezer and fridge compartment, then you need to pull out the fridge from its place, remove back panel and hear if compressor is running.

If it is running, but not cooling, then you have a failed compressor. In other words, its not pumping freon along the sealed system.

But the good thing is, most of these LG compressors has 10 years warranty. So check your warranty first and then call for help.

Other causes of why an LG refrigerator is not cooling properly

  • Dirty condensing coils
  • Condenser fan motor not working
  • Evaporator fan motor not working
  • Start relay failed
  • Temperature control thermostat not working

Dirty condensing coils

The most important part of the refrigerator’s cooling system is the condensing coils.

The condenser is where the refrigerant is contained and the coolant is circulated inside the coils.

The air inside the refrigerator flows across the condensing coils and removes the heat.

So, if you notice that the temperature inside the refrigerator is not maintaining the temperature that you selected, it is possible that there is something wrong with the condenser unit or maybe the coils are dirty.

The condenser unit is located at the bottom of the refrigerator and you will need to access it from the back of the unit.

Be sure to unplug the unit from the wall and disconnect the water line if you need to move it too far.

After inspecting the condenser unit and it turns out that coils are in fact dirty, you can simply remove any debris using a stiff brush, compressed air, for really caked-on dirt you can use soapy water along with the brush.

If you use water be sure that everything dries before testing it out.

Condenser fan motor not working

The key to the LG refrigerator cooling system is the circulation of cool air.

A big part of that is the condenser fan which moves the air across the condenser coils which cools the air.

If you suspect that airflow is being reduced or non-existant, the possibility is the fan blades are obstructed or the fan motor is faulty.

Always check to be sure that the power is off before you work on anything that uses power.

First, check to be sure that the fan is turning freely and free of any debris. If everything looks good you should test the motor for continuity with a multimeter.

If you determine that the motor windings are the problem you will need to contact LG and get a replacement motor.

After getting the new part to do the repairs, remove the old fan motor and then install the new fan motor.

When you have the repairs done, close up all covers and reconnect the water line if necessary, plug the power cord back in and move the refrigerator back in place.

Give the unit time to start the cooling process and check to see if it cooled down to the proper setting.

Evaporator fan motor not working

The evaporator fan circulates the air across the cooling coils and into the freezer and refrigerator sections of the refrigerator.

In most refrigerators, there is only a single evaporator system and it is located behind the freezer section.

If the air is not circulating properly it will not keep either of the sections cool enough.

Always check the fan to be sure that it is spinning freely and not bound up with debris.

If the fan will not turn you are likely dealing with a bad evaporator fan motor.

You can test the motor for bad internal windings using a multimeter and check for continuity.

You there is an indication that the windings are the problem you will need to contact LG and get a new evaporator fan motor or BUY HERE

If you need to replace the fan motor be sure that you unplugged the power cord and disconnect the water line if necessary.

Gain access to the back of the refrigerator to get at the evaporator motor.

Disconnect the power leads for the motor and remove the mounting bolts that are holding the motor in place.

Take out the old motor and put the new one in place and button everything back up and plug the unit in.

Start relay failed

In an LG refrigerator, the start relay is a very important part of the cooling system.

It works in conjunction with the compressor unit of the refrigerator and if it is not working properly or not working at all it will prevent the compressor unit from working properly or not at all.

You will need to gain access to the bottom part of the refrigerator by opening the back access panels.

The first thing is you need to do is pull out the refrigerator so that you can unplug it from the outlet and disconnect the water line if attached.

Move the refrigerator to a position that will allow you to open the back access panels.

The start relay will be at the bottom of the unit near the compressor, using a multimeter you need to test the relay for continuity between the start and run terminals if you don’t have continuity you will need to replace the relay.

Contact LG to find out about getting a new start relay . After getting the new part, replace it and button everything back up and plug the unit in and reconnect the water line if it was disconnected.

Check to see if the compressor is running normally.

Temperature control thermostat not working

The thermostat is a big part of the electrical system within the LG refrigerator and it controls that flow of power to the motors (Evaporator fan, condenser fan, and compressor) that are all part of the cooling system.

If it is not working properly one or more parts of the cooling system will not function.

If you suspect the temperature control thermostat is the problem you will need to gain access to the back of the unit.

The thermostat will be located at the bottom of the unit and will be easy to find. A quick way to check it for operation is to turn the knob and if it clicks the thermostat it likely working.

However, to be sure you will want to test it for continuity as you turn the knob.

If the thermostat is bad, you should contact LG and order a replacement part for your model refrigerator.

Once you get the replacement part installed and button everything back up and reconnect the water line (if you disconnected it) and plug the unit back in and test it out.

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68 thoughts on “Here Is Why LG Refrigerator Is Not Cooling”

  1. I have a peculiar cooling/freezing issue. I have an LG French door model LFX31945ST/02. During the winter months it cools, freezes, makes ice as it should. The temperature is set @ 33 for fridge and -6 for freeze. Which is as lowest setting. But I’ve noticed as it warms up in the house it doesn’t cool, freeze, or make ice as it should. A repair man inspected it and said it had plenty of Freon but doesn’t quite know where to go from here. The compressor was replaced maybe a year ago. Please send any repair suggestions. Thanks

    Reply
    • Does condenser coils are clean behind the fridge? If they are dirty you will not have proper heat exchange and thus not proper cooling

      Reply
  2. Hi Eugene, hoping you can help me out. I have a LFX25961AL, it’s about 11 years old, it stopped working after a power outage. After troubleshooting I suspected it was the control board, so I took it out to inspect, and sure enough it was burnt from the back. Looks like one of the circuit lines burned. I reordered a new board and replaced it. Upon plugging in the power, there was a series of clicks on the board from the relays, then the evaporator fan turns on, then the board started smoking followed by one of the circuit lines bursting. The compressor never turned on. It looks like there a current overload of some sort. What could be causing the board to burn like that?

    Reply
    • I would check compressor for a short circuit to the ground. every control board has a fuse, in case of overvoltage or overcurrent it will blow the fuse, but not the board circuit lines. You can try to 1) repair that circuit line or replace with a new board, 2)Disconnect connector from the compressor and power unit on. Or if you don’t want to risk, call a trusted appliance repair company to take a look at.

      Reply
  3. We have a 3 year old LG refrigerator with model lsxs26366s. There was some ice showing on items in freezer so we reduced the freezer temperature, after which it looks like it defrosted and since then it is not cooling. The compressor seems to be making normal sound. Any idea what could be the issue here?

    Reply
    • Take a look on the back panel inside freezer. Can you see some frost build up on the panel? If yes, remove panel and if you will see a lot of ice build up behind it, there is an issue with defrost cycle. Check continuity of the thermal fuse and defrost heater. Most likely fuse blown.

      Reply
  4. Hi I have a LG LFXS28566s that is not cooling nor freezing. It’s showing code 22 so I replaced the relay and it still showing the same code. Could it be the compressor even though it’s running? Or is it the capacitor?

    Reply
    • is any sound coming from the compressor? Does power come to the compressor? There are many things that needs to be checked, without proper tools it’s not easy to figure out. if you already put a new start relay and still not working, maybe the compressor is caput

      Reply
  5. I have an LG LFC22760WS, about 10 years old. Now the compressor runs continuously and the freezer does not get cold enough. It has the freezer on a large bottom drawer. Took it apart and looked at the coils. There was no ice on the coils. Started the fridge…freezer fan ran OK. After about five minutes ice started to form on the coil where it first comes into the freezer, but the further coils did not get very cold. Wondering if this is fixable, or should buy a new fridge. What could be the problem…mother board??

    Reply
    • Sounds like a lack of refrigerant. You have a leak in the system. You cant fixed by yourself properly, you need to call a technician. But usually, it’s a not cheap repair

      Reply
  6. I have an odd issue with my LG refrigerator. It stops working (water and ice maker do nothing, fridge and freezer don’t cool or freeze). The interior light is out, but single blinks slowly. After a couple of days, it starts working fully again. After a few more days it stops again. After a few more days it’s working again. It’s been in this constant loop for at least a couple of month now. The longest it was out is 4 1/2 days, the shortest 9 hours; the longest it stays on for is 4 1/2 days, the shortest 1 1/2 days.

    Reply
  7. Had rolling blackouts in Texas freeze Feb 2021.multiple power lpses over three day period.Can hear hum , no frost and fan at coils not running. DIAGNOSTIC READ FF .fan is not functioning freezer and fridge at ambient temperature

    Reply
  8. Have an LG LMXS27626S. The freezer would get cold, but the fridge would not go below 50 degrees F, regardless of the setting. No noisy compressor, clean coils, all fans working an NO fault codes. The problem is a tiny, motorized door in the inside of the refrigerator, behind the rear panel. The tiny flap breaks and it will NOT set a fault code. I took it out and threw it away and the fridge stays at 34 degrees F all the time now…

    Reply
  9. So I have an LG LFX28968ST Model. It’s got a linear compressor. It’s a little over 3 years old. It’s not cooling enough. I’m in Canada and I can read here and through my investigations that my model seems to be one of the ones with the compressor issue. A pretty big issue apparently. Do you know if LG Canada is dealing with the issue? Is there a sure fire test that I can do to determine if it is the compressor failing?Thanks. Your site is really informative.

    Reply
    • Hi Marvin, its better to call LG and ask them about warranty. As i know, LG should provide 10 years warranty for their compressors. It doesnt matter if you in Canada or US

      Reply
    • Better off to get a whirlpool bc its more than likely ur compressor and good luck with getting lg to replace it for ya!!

      Reply

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