Godfrey Mallya
Owner, MGM Appliance Repair
If your LG refrigerator is not cooling, the most common causes are a failed linear compressor, dirty condenser coils, a stuck evaporator fan, or a sealed-system leak. Before calling a repair tech, work through these checks. Most homeowners can diagnose the issue in 15 minutes.
This guide walks you through exactly what to check, what each symptom means, and when it's time to call a professional.
This sounds obvious, but start here. A refrigerator that's completely dead has a different problem than one that's running but not cooling.
Check these first:
If the fridge has no power at all, the problem is electrical, not a cooling issue. Check the outlet, breaker, and power cord before going further.
LG refrigerators have digital controls that can get accidentally changed. Kids, pets, or even bumping into the panel can adjust settings without you noticing.
The factory default settings are:
On most LG models, you can check and adjust these on the control panel inside the fridge or through the LG ThinQ app if your model has WiFi.
If your settings look correct but the display shows a significantly different temperature, the problem is likely mechanical, not just a settings issue.
The condenser coils release heat from your refrigerator. When they get clogged with dust, pet hair, or debris, the fridge can't cool efficiently.
On most LG refrigerators, the condenser coils are at the bottom, behind a removable grille, or at the back of the unit.
Here's how to check them:
1. Unplug the refrigerator. 2. Locate the coils. Check behind the front grille at the bottom or pull the fridge away from the wall to check the back. 3. Look for dust buildup. If the coils are covered in dust or pet hair, that's likely contributing to cooling problems. 4. Clean the coils with a coil brush or vacuum with a brush attachment.
If you have pets, dirty condenser coils are one of the most common causes of cooling issues. Cleaning them every 6 to 12 months prevents problems.
The evaporator fan circulates cold air throughout the refrigerator and freezer. If this fan stops working, the fridge won't cool even if everything else is fine.
Here's how to check it:
1. Open the freezer door. 2. Press and hold the door switch to make the fridge think the door is closed. 3. Listen for the fan. You should hear a consistent humming sound from inside the freezer.
If you don't hear the fan, or if you hear grinding, clicking, or intermittent noise, the evaporator fan motor may be failing.
On some LG models, ice buildup around the fan can cause it to stop. If you see frost covering the back wall of the freezer, the defrost system may be the real problem.
Open your freezer and look at the back wall. A thin layer of frost is normal. A thick layer of ice covering the back wall is not.
Excessive frost buildup usually indicates a problem with the defrost system. This could be:
When frost builds up on the evaporator coils behind the back wall, it blocks airflow and prevents cooling. The freezer may get cold, but the refrigerator compartment stays warm.
If you see heavy frost, the fridge needs professional repair. Manually defrosting (unplugging the fridge for 24-48 hours) might temporarily help, but the underlying problem will return.
The compressor is the heart of your refrigerator's cooling system. It's located at the back of the fridge, near the bottom.
Here's how to check it:
1. Pull the fridge away from the wall so you can hear the back clearly. 2. Listen for a low, steady humming sound. That's the compressor running. 3. If you hear nothing, clicking sounds, or a buzzing that starts and stops, the compressor may be failing.
A healthy compressor runs quietly with an occasional click when it cycles on and off. Constant clicking, buzzing without running, or complete silence are all signs of compressor problems.
LG French door refrigerators made between 2015 and 2020 have a well-documented issue with their linear compressors failing prematurely.
Symptoms of the linear compressor problem:
The good news: LG extended the compressor warranty to 10 years for affected models. If your LG French door fridge is within this window, the compressor replacement may be covered.
To check warranty eligibility: 1. Find your model and serial number on the sticker inside the fridge. 2. Call LG or an authorized service provider like MGM. 3. Have your proof of purchase ready. LG requires it for warranty claims.
MGM is an authorized LG service provider. We can check your warranty status, file the claim with LG, and perform the replacement.
Some problems you can handle yourself. Others need professional repair. Call a tech if:
The compressor is silent or clicking. Compressor replacement requires specialized tools, refrigerant handling, and manufacturer training.
You suspect a sealed-system leak. Refrigerant leaks require EPA-certified technicians and proper recovery equipment.
**Error codes appear.** LG error codes like OF, dE, IF, rF, or ER indicate specific system failures. Here's what common codes mean:
Frost doesn't clear after manual defrost. If heavy frost returns within a few days, the defrost system needs repair.
The fridge runs constantly but doesn't cool. This usually indicates a refrigerant leak or compressor problem.
When you call MGM for a refrigerator that's not cooling, here's what happens:
1. **We arrive in the scheduled window.** Most calls get same-day or next-day appointments.
2. **We run full diagnostics.** This includes checking power, temperatures, fans, compressor operation, error codes, and sealed-system pressures if needed.
3. **We give you a written quote.** You'll know exactly what's wrong and what it costs to fix before any work starts.
4. **Most repairs happen the same visit.** We stock common LG parts (fans, thermistors, control boards, ice maker components) in the van.
5. **Everything is covered for 90 days.** If the same problem comes back, we come back at no charge.
The diagnostic fee is $98 flat. That gets applied to the repair cost if you approve the work. No surprises.
If you've worked through these steps and your LG refrigerator still isn't cooling, it's time for professional diagnosis.
Call MGM at (240) 367-3475 or book online. Same-day service available across DC, Maryland, and Virginia.
As an authorized LG service provider, we handle both warranty and out-of-warranty repairs. We'll diagnose the problem, check your warranty status if applicable, and get your fridge running cold again.
$98 flat diagnostic. Same-day service across DC, MD & VA.90-day warranty on every repair.
