Freezer Running But Not Freezing: Causes & Fixes

Quick Answer

The most common reason a freezer runs but won't freeze is dirty condenser coils or a frost-clogged evaporator. Start by vacuuming the coils underneath the unit and checking the back wall of the freezer for heavy ice buildup.

I've been doing this 15 years and a freezer that runs but won't freeze is almost never a dead machine. Usually it's a heat exchange problem. Either the heat can't escape because the coils are caked in dust, or cold air can't circulate because ice is blocking the internal vents. Catch it early and you're looking at a $15 fix. Ignore it and you'll eventually burn out your compressor, and that's a $400+ repair right there.

GenericRefrigeratorSeverity: highDifficulty: intermediate75% DIY Success

Time to Fix

30–120 min

Difficulty

intermediate

Parts Cost

$15 – $80

Tools Needed

Phillips #2 screwdriver, Flat-head screwdriver

Freezer Running But Not Freezing: Causes & Fixes

OK so here's the deal. Diagnosing this is all about elimination. You start with the free stuff, cleaning and defrosting, before you spend a dime on parts. If the compressor's humming and the fans are spinning but there's zero frost on the evaporator coils at all, that's a refrigerant leak and that's the one time I'll tell you to call a pro. Everything else? You can handle it yourself with basic tools.

Most Likely Causes

Based on aggregated repair data, here is the probability breakdown for this error code:

Dirty condenser coils35%

Defrost system failure (ice blockage)30%

Evaporator fan motor failure15%

Compressor start relay failure15%

Sealed system or refrigerant leak5%

Symptoms You May Notice

Ice cream is soft or straight-up soupy when you pull it out, even after sitting in there all day.
A click from the bottom rear every few minutes, then a pause, then silence. That's the compressor trying to start and failing.
The back interior wall of the freezer is covered in a solid sheet of ice or thick frost, not just a little frost, like a full inch or more of buildup.
The fan inside the freezer has stopped spinning completely, or it's making a grinding or growling noise.
Compressor housing feels hot to the touch but the freezer itself is room temp or barely cool.

Can you reset a Generic refrigerator to clear the NOT-FREEZING code?

There's no real software reset for most freezers with this issue. But you can reset the cooling cycle by unplugging the unit for 30 minutes. That lets the compressor pressures equalize and gives the control board a fresh start. If frost buildup was your problem, don't skip the full 24-hour manual defrost before you plug it back in. Plug it in before that ice is completely gone and you'll be right back here in a few days.

Tools Required for Diagnosis

Phillips #2 screwdriverFlat-head screwdriverDigital multimeter (with continuity setting)Vacuum cleaner with brush attachmentAppliance coil brush (long-handle)Hair dryerTowels or old blankets for defrost runoff

Diagnostic Checklist

Follow these steps in order. We start with the easiest external fixes before opening up the machine.

ComponentComponent Under Test

Expected Range10–150 ohms

ConditionIf Open (OL) or infinite, replace component.

Replacement Parts

If your diagnostic testing proves the component has failed, you will need a replacement. We recommend OEM parts over aftermarket for water-handling components.

Part Name	OEM Number	Estimated Price
Evaporator Fan MotorGeneric Universal · $25–$65	Generic Universal	$25 – $65
Compressor Start Relay (PTC)Universal 3-in-1 Start Kit · $15–$40	Universal 3-in-1 Start Kit	$15 – $40
Defrost Heater AssemblyBrand-Specific · $30–$80	Brand-Specific	$30 – $80

Frequently Asked Questions

Why is my freezer running but the ice cream is soft?

Soft ice cream means your freezer's hovering around 15-20 degrees instead of the 0 degrees it needs to be at. Usually it's one of two things: a failing evaporator fan that's not moving the cold air around, or dirty condenser coils that are making the compressor overheat and cut out early. Start with the coils since it's free to clean them and it solves the problem more often than people expect. If the coils are clean, check whether the fan is actually spinning when the compressor kicks on.

Can I fix a freezer that isn't freezing myself?

Honestly, yeah, most of the time. Dirty coils, a bad start relay, a dead fan motor, a cracked door gasket, all of that's totally DIYable with basic tools and parts you can order online for under $60. The only thing you can't fix yourself is a refrigerant leak or a dead compressor. That's the sealed system and it requires a licensed tech with refrigerant recovery equipment. If you've ruled everything else out and the compressor still isn't keeping the freezer cold, that's when you call someone.

How do I know if my compressor is bad?

You'll hear clicking every few minutes, then silence. That's the compressor trying to start and failing. If the compressor body is vibrating and hot but the freezer's warm, and you've already cleaned the coils, checked the relay, and confirmed the fan works, then yeah, you probably have a sealed system problem. A new compressor installed runs $300 to $600 depending on the unit. At that point you need to think hard about the age of the fridge and whether it's worth fixing or just replacing.

Does leaving the door open ruin the freezer?

It won't permanently ruin it, but it causes a bad frost buildup on the evaporator coils. That ice acts like insulation and completely kills airflow. You'll need a full 24-hour manual defrost to clear it out before the unit will cool properly again. The good news is the fridge is almost always totally fine once it's thawed out completely. Just don't make a habit of it because repeated frost cycles put stress on the defrost components over time.

How long does it take to fix a freezer that isn't freezing?

Depends what's wrong. Cleaning the coils takes 20 minutes. Swapping a start relay is 30 minutes once you have the part in hand. Replacing the evaporator fan is maybe an hour. The longest part is the manual defrost if you've got a frost-clogged evaporator, that's a full 24 hours with the doors propped open. Plan your food situation around that. And if you're waiting on parts to ship, get anything perishable into a cooler or a neighbor's fridge. Don't wait on it.

Same Fix on Other Brands

Whirlpool refrigeratorNOT-COOLING: Whirlpool Refrigerator Not Cooling Samsung refrigerator22E: Samsung Refrigerator 22E Error: Fan Failure

Models Known to Experience NOT-FREEZING Errors

This repair applies to most Generic refrigerators with this error code. Common model numbers include:

Standard top-freezer refrigerators (18-22 cu ft range), Side-by-side refrigerator-freezers (25-36 cu ft configurations), French door refrigerators with bottom freezer drawer, Stand-alone upright freezers, Chest freezers (all sizes), Counter-depth and built-in models with bottom-mounted coils

Written by

Mike Sullivan

Lead Appliance Repair Technician · 20 years experience

Last verified for technical accuracy on May 20, 2024