Here Is Why LG Refrigerator Is Not Cooling

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

  1. LG modelFXS24623S Open left door and it trips the circuit breaker. Any idea as to cause. Open right door, all is fine.

    Reply
    • Wow, never even heard about this issue, that when open left door it trips the breaker. No clue what may cause this issue

      Reply
  2. Hello Eugene,
    Thanks for this website and providing quick and timely responses. I have a LG LFXC24726S refrigerator I purchased that’s just over two years old. In the span of 24 hours, the ice cube maker wasn’t making ice, the refrigerator wasn’t cooling and the freezer was no longer freezing food. I called a repairman familiar with this product and he said 99% of the time it’s a failed compressor. Could it be something more/less than this?

    Reply
    • Can you confirm that compressor is running? Just pull the fridge out, remove back cover and listen for sounds coming from compressor? if compressor is running but not cooling, it can be 1. Failed Compressor or 2. Restriction in the sealed system (drier filter location)

      Reply
  3. Hi Eugene

    I have a LG GR-B712YLP model fridge.
    My fridge doesnt cool but the freezer functions fine.
    Can it be a relay problem or tempreture control thermostat.
    All the other components are working.
    Please advise.

    Reply
    • Hi Ricco, take a look at the freezer back panel. Can you see any frost build ups? If yes, you have defrost issue. You need to check Defrost Control Assembly for continuity. here is how it look like. Unfortunately i can’t find exact part for your model. is this model number you provided is correct? Feel free to ask if you have any questions.

      Reply
      • Hi Eugene,

        I have the same issue. I opened the back and no frosting issue. compressor seems to be working (it is making that buzzing sound), and fan is working. I cleaned the coils and dust around the fan as it was fairly dusty. Anything else I can do?

        Reply
  4. LG Linear Compressor Fridge (3 Yr old). Compressor & Cooling Fan both running. Ice maker not making ice, per above suggestions, I reset it and it filled with water. Will see if it dumps & refills in next couple of hours.
    Fridge is cool but not COLD.
    Freezer seems to be working fine.
    I have cleaned the coils and unplugged/plugged back in after 1 min so system can reset.
    Please advise what temperature the Freezer & Refrigerator should be set on (F & C) and what other trouble shooting can I do before calling a repair man to see if Control panel needs replaced (part cost?) Thanks in advance for your professional advice.

    Reply
    • -18C freezer, +3C fridge. But from my experience these Linear Compressors failing quite often and as i know LG provides 10years warranty no them. Check with LG first and then call technician

      Reply
      • Hi,

        My LG inverter linear fridge regularly has condensation and freezing in the freezer section. The fridge is just over a year old, LG-GT-B4387PZ, and the LG mechanic has come once and cleaned the ice out – which had also formed on the cooling coils of the freezer. I cannot seem to find out why there is repeated condensation and freezing of that water with icles forming in the freezer. It has just been 3 months since the mechanic cleaned all that ice out – which was weird there was so much to begin with. The mechanic simply said oh this is normal, which we all know is not.

        Will be grateful to be guided in the right direction on what is the likely issue – should we be asking LG to replace the fridge?

        Reply
        • Hello, for me it sounds like the problem with defrost cycle (if frost build up on the evaporator coils): 1. Defrost thermostat malfunction 2. Defrost heater burnt or 3. Control board not initiating defrost cycle.
          And i agree with you its not normal..

          Reply
  5. Can the compressor be hot and still not function? My LG is not getting cold, is around 40 degree fridge and 39 freezer, all fans are working, The compressor is warm, but doesnt seem to be turning on. would this be a relay?

    Reply
    • Its a compressor or restricted sealed system issue. Check warranty and call LG, LG providing 10 years warranty for the compressor

      Reply
  6. I’m confused by my 2 year old LG LSXS26366D side by side refrigerator. It is not cooling at all, but it has power, the light work, both the condenser and evaporator fans are running, the linear compressor is “running” with soft sound, and there are no error codes on the front. The condenser coils are clean, and the freezer has completely defrosted. There never was an ice build up. I unplugged it last night for several minutes, then plugged it in again, but still no cooling. I’m not having much luck on finding troubleshooting tips.

    Reply
    • Hi Thomas, unfortunately your fridge has a major problem with compressor. It is running but not pumping freon in the system. Contact LG , they should have 10 years warranty for the compressor

      Reply
  7. I have a New LG fridge model LRFXS2503S that is less than a year (a few months) Ice maker no longer making ice. Freezer no longer freezing. Fridge not as cold as temperature selected. Freezer 0 degrees F. Fridge 38 degrees F.

    The Compressor is warm and you can hear it running. The fan next to it is running also. Hit the fridge test button and all the fans inside the fridge is running and feels cold but not cold enough to freeze foods in the freezer or make ice. What should I do at this point?

    Reply
    • First, buy 2 fridge thermometer from Homedepot to know what is the actual temp is, in both compartments. Don’t rely only, on display temp. After that, come back again to this website and give us update, whats the actual temp

      Reply
  8. Hi,

    I have LG LMXS30776S fridge which is just a little two years old. My fridge completely stopped working out of nowhere.. my husband and i pulled it out and tried the reset button on the back.. nothing was blinking.. compressor seems to be running and freezer seems to get air every now and then… the fans in the fridge and freezer are both running… that doesnt seem to be the issue..it isnt making ice either.. just concerned since food is going bad. I’ve removed the model/serial number sticker that was inside the fridge.. so apparently i dont have the serial number anymore (dnt ask me why i removed it.. i really dont even know) i have unplugged the fridge too.. nothing is working

    Reply
  9. Hi Eugene, I habe a LG lfxs32766s refrigerator, that is not cooling either the fridge or freezer, the compressor seems o be running, when I opened up the back panel of the freezer it started frosting the coils. However I cannot test the evaporator fans since my fridge has electronic door switches and will not allow fans to run while doors are open. Both fridge and freezer are not cooling properly. Any thoughts?

    Reply
    • Thermal fuse blown or defrost thermostat failed, as long as you have frost build up on the evaporator coils, so check that

      Reply
  10. Hi Eugene. Before I forget, tks for this super video. I have a LG Model LXFS 30766D/01–3 yrs old. This is the fourth time I had experienced major problems with this frig. The last time was about 3 weeks ago, where nothing was working. On the control panel, there was a couple of letters next to freezer and the frig. Not sure but frig had a large F(?) and the freezer large Df(?).Have a little faint noise coming from rear. Tech at LG said to unplug the unit and do not open door for 4 hours–plug back in. This worked for 3 weeks. Same problem now but no large letters on control panel like before. Shut down again for 4 hours–did not work. Temp in frig is 51F now. Have to make room in garbage can for spoiled food in the frig. Tks again.

    Reply
    • Do lights come ON in the fridge compartment? Pull the fridge out and listen to compressor. Does it make any sound? If compressor is not working, it can be the main control board malfunctioned

      Reply
  11. I have an LG Refrigerator LFXS29636B model and it has stopped cooling. Compressor and fan are running. In my community of 100,000+ population there is no one who will do warranty work for LG products. Any suggestions as to what is wrong with this fridge?

    Reply
    • The problem can be: Compressor failed or there is a leak in the sealed system. All these are major issues, call LG and ask about 10 years warranty for the compressor

      Reply
  12. Hi. LG LTC20380 (top freezer). Intermittent condenser fan issues, especially when the ambient temperature is above 75 F or if items were not carefully placed in freezer so as to avoid contact with fan wall. Replaced condenser fan about 3 days ago and put additional clamp on fan/motor shaft to prevent slippage but still have intermittent problem which I can only solve by a combination of flipping the circuit breaker off for 5-10 minutes and then pressing the temperature control switch until it cycles through the lights on/off sequence (this unit has the-I think utterly insane-demo sequence control). I should add that at times the new fan is slow to start when I open the freezer door. Unit otherwise provides stable cooling when fan works correctly, though it can take a while for the compressor to kick in after the initial “clicks”. Is this a faulty connection, a bad switch, or something else (I am assuming it isn’t two bad fans)? Thanks.

    Reply
  13. Hello Eugene,
    All of the sudden my 4 years old refrigerator model LG LFCS31626S/01 stopped cooling (both freezer and fridge compartments. The compressor seems to run (makes very soft sound), fan is working, coils were somewhat dirty (I cleaned them but it did not help). Nothing is hot, not frost accumulation. Tried to reset by unplugging for 1 min. Nothing worked. Is it compressor issue?
    Thanks a lot!

    Reply
  14. I have an LG 3 door refrigerator that stopped working completely. Lights and front panel work. Can change temperature on panel but neither compressor or fans are working. Unplugged and let sit a few hours plugged back in and still nothing.

    Reply
    • Remove back panel in the freezer to see if any frost build up on the evaporator coils. If yes, then you need to check defrost fuse and thermostat along with the heater for continuity. That frost or ice, blocking airflow into the fridge compartment

      Reply
  15. I have an LG linear. It has stopped cooling and freezing. Compressor is running, Fan is working, coils were dusty but not terrible. The water over flow was full. Any idea where to start.

    Reply
  16. Have a 12yr double door LG,GR-456ZMQ,freezer @16°C, fridge@1°C,no frost in rear of freezer, so defrost is ok, evaporator fins clear,condenser cleaned,and fan ok, evaporator fan running, just feel air flow to fridge is less, has icebeam door cooling, no visible moisture seen in fridge compt..when u open fridge,even kept freezer flap at position 1..still feel flow is less..any suggestions welcome..otherwise entire refrigerator is ok…

    Reply

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