Refrigerator Not Cooling? What to Check First and When to Call

Warm fridge: the quick answer

• Keep the doors closed. A closed refrigerator keeps food safe for about 4 hours without cooling.
• Check the temperature setting, the power and whether the doors are sealing.
• Clean the condenser coils and make sure nothing blocks the vents inside.
• Notice the pattern: freezer cold and fridge warm, both warm, or clicking. Each points to different parts.
• If it is still warm after these checks, call a technician. Most causes are common, repairable parts.

First, protect the food

Keep the doors shut as much as you can. According to USDA food safety guidance, a refrigerator that stays closed keeps food safe for about 4 hours. A full freezer holds its temperature for about 48 hours, or about 24 hours if it is half full.

Put an appliance thermometer on a middle shelf. The fresh-food section should be at or below 40°F and the freezer at or near 0°F. Perishable foods like meat, poultry, seafood, milk, eggs and leftovers that have been above 40°F for more than 2 hours should be thrown out. When in doubt, throw it out, and never taste food to decide whether it is safe.

If you have a cooler, move the most perishable items into it with ice. Frozen food that still has ice crystals or is at 40°F or below can be refrozen or cooked.

Safe checks to try first

Many warm refrigerators turn out to have a simple cause. These checks take about fifteen minutes and need no tools beyond a vacuum.

• Check the setting. Dials and touch controls get bumped during cleaning or by kids. Some models also have a showroom or demo mode that turns cooling off while the lights stay on.
• Confirm power. If the light is off too, check the outlet and the breaker. A GFCI outlet in a garage or kitchen may have tripped.
• Close the doors properly. A tall bottle, a drawer out of its track or a full door bin can hold a door open just enough to let warm air in.
• Test the door seal. Close the door on a dollar bill. If it slides out with no resistance at several points, the gasket may not be sealing.
• Clear the vents. Inside the fridge and freezer there are small vents that move cold air between the sections. Packed food in front of them stops the airflow.
• Clean the condenser coils. Unplug the refrigerator, then vacuum the coils behind the bottom grille or on the back. Dusty coils make the system work harder and cool less.
• Give it room. A refrigerator pushed tight into a cabinet or against a wall needs space to release heat. Check the clearance in your owner’s manual.

If you changed a setting or cleaned the coils, give the refrigerator up to 24 hours to settle before deciding it still has a problem.

What the symptoms point to

Freezer cold, fridge warm. This is the most common pattern. Cold air for the fresh-food section usually comes from the freezer, so if it stops flowing, the fridge warms first. Common causes are a failed evaporator fan, a damper that is stuck closed, or a defrost problem that has let frost build up on the evaporator coil. Heavy frost on the back wall of the freezer is a strong clue that the defrost system has failed.

Both sections warm, with a click every few minutes. The compressor is trying to start and shutting off. That is often the start relay or overload, a small and common part, though it can also be the compressor itself.

Both sections warm and quiet at the back. Check whether the condenser fan near the compressor is turning. A failed condenser fan, a control board or a temperature sensor can stop cooling without much noise.

Runs all the time but never gets cold enough. Dirty coils, a weak fan, a bad door seal or an overloaded fridge are common causes. Less often, a sealed system problem such as a refrigerant leak.

Water under the crisper drawers or ice in the bottom of the freezer. A clogged defrost drain usually causes this, and it often comes with cooling problems because the same defrost system is involved.

Central Texas heat and garage refrigerators

In Temple, summer is the hardest season on refrigerators. Higher kitchen temperatures and dusty coils add up, and a refrigerator that was barely keeping up in spring can fall behind in July.

Garage refrigerators and freezers have it harder. Many standard refrigerators are not designed to run in a space that gets very hot or close to freezing, and some will warm up or stop cycling properly in those conditions. If yours only misbehaves on the hottest or coldest days, that is useful information for the technician. Some manufacturers sell garage-ready models built for wider temperature ranges.

When a warm refrigerator needs a technician

Call if the refrigerator is still warm after the checks above, if there is heavy frost on the back wall of the freezer, if it clicks but does not run, or if you see water collecting inside. These repairs need parts testing with a meter, and some need panels removed that are best left to a technician.

Most of the parts behind these problems, such as fans, relays, defrost heaters, sensors and thermostats, are common and reasonable to replace. A failed compressor or a refrigerant leak is a bigger repair. On a refrigerator past about 10 to 15 years old, a good technician should help you weigh repair against replacement. Ask for that before you approve the work.

Before you pick up the phone, note the brand, the model number from the label inside the fresh-food section, and which pattern you see: freezer cold and fridge warm, clicking, or heavy frost. Telling the technician that up front points the diagnosis at the right part from the start.