Refrigerator Not Cooling? Here Are the 5 Most Common Causes

A refrigerator that runs but won’t cool is one of the most common problems we see in Los Angeles homes. The good news: when a fridge is not cooling, the cause is usually one of a handful of parts — and several are easy to check yourself before you call anyone. Here are the five most likely culprits, from simplest to most serious.

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Start with the simple checks

Before assuming the worst, rule out the easy stuff. Make sure the temperature dial hasn’t been bumped, the fridge is plugged in, and the outlet has power. Give the unit room to breathe — pushed too tightly against a wall, it can’t shed heat. Finally, check that the doors are sealing. A gasket that’s torn or gummed up lets cold air escape and warm air in, which can make a perfectly healthy fridge feel warm.

Dirty condenser coils

The condenser coils release the heat your refrigerator pulls out of the food compartment. When they’re caked in dust and pet hair — common under and behind the unit — they can’t release heat efficiently, so the fridge struggles to stay cold. Unplug the refrigerator, vacuum the coils, and give it a day to recover. This is the single most common cause of weak cooling, and cleaning the coils regularly prevents it — simple upkeep the Department of Energy’s Energy Savings Hub recommends for keeping appliances running efficiently.

A failing evaporator fan

If the freezer is cold but the fridge section is warm, the evaporator fan is a prime suspect. This fan circulates cold air from the freezer into the refrigerator compartment. When it fails or gets blocked by ice, cold air never reaches your food. You might hear it running loudly or not at all. A worn evaporator fan motor is a straightforward replacement for a technician.

A faulty start relay or compressor

The compressor is the heart of the system, and the start relay is the small part that helps it kick on. If the relay fails, the compressor won’t start and nothing gets cold. A compressor that clicks on and off, or runs constantly without cooling, points to a sealed system problem. These repairs involve the refrigerant system and should always be handled by a professional — this is not a DIY fix.

When to call a technician

If you’ve cleaned the coils, confirmed the fan is running, and your fridge still isn’t holding temperature, it’s time to bring in help. Sealed system and compressor issues require the right tools and training, and food loss adds up fast. A technician can diagnose the exact fault and quote the repair before any work begins.

Repairly offers same day refrigerator repair across Los Angeles for every major and luxury brand. If your fridge still isn’t cooling, give us a call and we’ll get a technician to your door — often the same day.