Both sections are warm
Ice cream soft, milk warm, and little or no cold air in either section.
Start here: Begin with settings, power, condenser coil airflow, and whether the compressor and fans are actually running.
Refrigerator cooling problem
LG Refrigerator Not Cooling
Direct answer: When an LG refrigerator stops cooling, the most common homeowner-level causes are a bad setting, blocked airflow, dirty condenser coils, a door that is not sealing, or frost choking the evaporator area. If both sections are warm and the compressor area is quiet or clicking, the problem may be beyond basic DIY.
Most likely: Start by figuring out whether both the freezer and fresh-food section are warm, or only the refrigerator side is warm. That split tells you a lot faster than guessing at parts.
A refrigerator can look dead-cold from the lights and display while the food section is drifting warm. Reality check: a fridge that has been packed tight, left slightly open, or pushed against a dusty wall can lose cooling without any failed part at all. Common wrong move: turning the temperature colder and colder before checking vents, frost, and coil dirt. That usually hides the real problem and can make icing worse.
Don’t start with: Do not start by ordering a compressor, control board, or random fan motor. Most no-cooling calls turn out to be airflow, frost, coil dirt, or a door-seal issue first.
Both freezer and fridge warmCheck power, cooling mode, condenser airflow, and listen for compressor or fan activity first.
Freezer cold but fridge warmSuspect blocked air movement, frost buildup behind the rear freezer panel, or an evaporator fan problem before anything else.
Last reviewed: 2026-04-17
Start by matching the cooling pattern you actually have
Freezer is cold but refrigerator is warm
Frozen food is mostly okay, but the fresh-food side is too warm and airflow feels weak.
Start here: Go straight to airflow checks, blocked vents, frost on the freezer back wall, and evaporator fan clues.
Cooling comes and goes
Temperatures swing through the day, food spoils early, or the unit seems fine after a reset and then warms up again.
Start here: Look for dirty coils, a door not sealing, heavy frost, or a fan that starts and stops with noise.
Unit runs a lot but still stays warm
You hear it working often, but temperatures never recover fully.
Start here: Check for packed vents, dirty condenser coils, poor door sealing, or frost buildup choking the evaporator.
Most likely causes
1. Airflow blocked inside the refrigerator or freezer
This is especially common when the freezer is still cold but the refrigerator section is warm. Food packages, bins, or ice can block the cold-air path.
Quick check: Make sure interior vents are not covered by food, and feel for steady cold airflow from the refrigerator vents.
2. Dirty condenser coils or poor airflow around the refrigerator
When coils are matted with dust or the machine is jammed tight against the wall, heat cannot leave the cabinet well and both sections can drift warm.
Quick check: Pull the unit out enough to inspect the lower rear or underside coil area for dust buildup and check for warm air moving out near the machine compartment.
3. Frost buildup around the evaporator area
A frosted-over evaporator blocks air movement, so the refrigerator may run but not move enough cold air into the food section.
Quick check: Look for snow or solid frost on the rear freezer wall or around interior vents, and listen for a fan rubbing or struggling.
4. Evaporator fan or condenser fan not moving air
Fans do the actual air-moving work. If one quits, cooling drops fast even though lights and display still work.
Quick check: Listen for fan sound with the doors closed, then open the freezer door and press the door switch to see whether the evaporator fan starts.
Step-by-step fix
Step 1: Confirm the exact cooling pattern before you touch anything
You do not troubleshoot a whole-unit warm refrigerator the same way you troubleshoot a cold freezer with a warm fresh-food section.
- Check the actual temperature in both sections if you can, or use food clues: soft ice cream means the freezer is warming, while sweating milk and produce means the refrigerator side is too warm.
- Make sure the refrigerator is not in a demo or display mode if the panel is lit but cooling seems absent.
- Verify the temperature settings were not changed accidentally during cleaning or loading groceries.
- Close both doors and listen for normal running sounds for a full minute: compressor hum, fan movement, or repeated clicking.
- Open the freezer and refrigerator doors one at a time and note whether airflow feels weak, normal, or absent.
Next move: If you find a wrong setting or demo mode and cooling returns within several hours, you likely avoided a parts chase. If settings are correct and the pattern is still clear, move to airflow and dirt checks next.
What to conclude: A freezer-cold/fridge-warm pattern usually points to air movement trouble. Both sections warm points more toward condenser airflow, compressor-side trouble, or a broader cooling failure.
Stop if:
- You smell burning plastic or hot electrical odor.
- The outlet, cord, or plug is hot.
- The refrigerator is clicking repeatedly and then going silent with no cooling.
Step 2: Clear the easy airflow problems inside the cabinet
Blocked vents and overloaded shelves are common, safe to fix, and they can mimic a failed part.
- Move food packages away from the air vents in the freezer and fresh-food section.
- Check that drawers, bins, and shelves are seated correctly and not holding the door slightly open.
- Inspect the refrigerator door gasket and freezer door gasket for gaps, folds, torn corners, or sticky debris.
- Clean the gasket sealing surfaces with warm water and a little mild soap, then dry them.
- Close a sheet of paper in several spots around each door. If it slides out with almost no drag in one area, the seal may be weak there.
Next move: If airflow improves and the doors seal tightly, temperatures often start recovering within a few hours. If vents are clear and the seal looks decent but cooling is still weak, check the condenser side next.
What to conclude: Poor interior airflow or a leaking door can keep the unit running constantly while never quite getting cold enough.
Step 3: Inspect the condenser coil area and machine-compartment airflow
A refrigerator has to dump heat before it can make cold. Dust-packed coils are one of the most common fixable causes of weak cooling.
- Unplug the refrigerator or switch off power before reaching into the lower rear or underside area.
- Pull the refrigerator out enough to inspect the condenser coil area and the air path around it.
- Vacuum loose dust carefully and use a soft coil brush where you can reach without bending tubing or wiring.
- Check that the rear machine-compartment area is not packed with lint, pet hair, or a fallen paper label blocking airflow.
- Restore power and listen near the lower rear area for the condenser fan if your model uses one there.
Next move: If the coils were badly clogged, the cabinet may need several hours to stabilize, but you should usually feel better heat discharge and steadier cooling. If the coils were already fairly clean or cleaning changes nothing, move on to frost and fan clues inside the freezer.
Step 4: Check for frost buildup and evaporator fan trouble in the freezer
This is the main split for a refrigerator that runs but does not move cold air well, especially when the freezer is colder than the fresh-food section.
- Look at the rear freezer wall for a heavy frost blanket, snow, or bulging ice pattern.
- Press and hold the freezer door switch with the door open and listen for the evaporator fan.
- If the fan is noisy, scraping, or dead silent while the unit should be cooling, note that before unplugging anything.
- If you see only light, even frost and the fan runs strongly, the problem is less likely to be a simple airflow blockage.
- If the rear freezer wall is heavily iced over, unplug the refrigerator and leave the doors open long enough to fully melt the ice, protecting the floor with towels.
Next move: If cooling returns normally after a full manual defrost, that strongly points to a defrost-system problem or an airflow issue caused by ice. If there is no fan operation or cooling does not return after a complete thaw, the fan branch becomes stronger and sealed-system trouble becomes more likely if both sections stay warm.
Step 5: Make the repair call: gasket, fan, or pro service
By now you should know whether you have a simple sealing problem, a likely air-moving part failure, or a deeper cooling issue that is not a safe DIY repair.
- Replace the refrigerator door gasket or freezer door gasket only if you confirmed a real sealing gap, torn gasket, or persistent paper-test failure after cleaning and warming the seal.
- Replace the refrigerator evaporator fan motor if the freezer-side fan does not run when it should, or if it growls, stalls, or hits ice after the frost issue is cleared.
- Replace the refrigerator condenser fan motor if the lower machine-compartment fan is not spinning while the compressor is running and the blade is not just obstructed.
- If both sections stay warm, the compressor clicks, or you found oily residue on tubing, stop DIY and book appliance service for sealed-system diagnosis.
- After any cleaning, thaw, or part replacement, reload food only after temperatures recover and stay stable.
A good result: Once the right issue is corrected, the freezer should usually pull down first, then the fresh-food side follows over the next several hours.
If not: If the fans run, airflow is clear, doors seal, coils are clean, and cooling is still poor, the remaining likely causes are control or sealed-system problems that need a technician.
What to conclude: This is where you stop guessing. A confirmed seal problem supports a gasket. A confirmed dead fan supports a refrigerator fan motor. A warm cabinet with compressor-side trouble points to pro-only work.
Replacement Parts
Repair Riot may earn a commission from qualifying purchases, at no extra cost to you.
FAQ
Why is my LG refrigerator running but not cooling?
Usually because it cannot move air or shed heat properly. Start with blocked vents, dirty condenser coils, a door not sealing, frost buildup, or a failed evaporator fan before assuming a major part has failed.
If the freezer is cold but the refrigerator is warm, what is the most likely problem?
That pattern usually points to an airflow problem. The cold is being made in the freezer, but it is not getting moved into the fresh-food section well enough. Blocked vents, frost behind the freezer wall, or a weak refrigerator evaporator fan are the first things to check.
Can dirty condenser coils really make a refrigerator stop cooling?
Yes. When the condenser coil area is packed with dust and pet hair, the refrigerator cannot dump heat efficiently. Cooling gets weak, run time goes up, and both sections can start warming.
Should I unplug the refrigerator to reset it?
A short power reset can help if the controls are confused, but it will not fix a torn gasket, blocked airflow, dirty coils, a dead fan, or a sealed-system problem. Use a reset as a quick check, not as the main repair plan.
When is this no longer a DIY refrigerator repair?
Stop and call for service if both sections stay warm after the basic checks, the compressor clicks or overheats, you see oily residue on tubing, or the likely problem is in the sealed system or live electrical diagnosis.