A refrigerator that runs but does not cool is one of the most common calls we get — especially during hot Sacramento summers. Before you assume the worst, work through these checks.
1. Check the thermostat settings
It sounds obvious, but controls get bumped. The fresh-food section should be around 37°F and the freezer around 0°F.
2. Dirty condenser coils
Coils under or behind the fridge release heat. When they are covered in dust and pet hair, the fridge cannot shed heat and cools poorly. Unplug the fridge and vacuum the coils with a brush attachment once or twice a year.
3. Blocked air vents
Cold air flows from the freezer into the fresh-food section through vents. Overpacking can block them. Leave space around the vents.
4. Door gasket not sealing
Close the door on a dollar bill. If it slides out easily, the gasket may be worn and letting warm air in.
5. Evaporator fan not running
If the freezer is cold but the fridge is warm, the evaporator fan may have failed or be blocked by ice. You may hear chirping or no fan noise at all.
6. Defrost system failure
Frost-free fridges melt frost automatically. If the defrost heater, thermostat or control fails, the evaporator coil ices over and airflow stops. A thick layer of frost on the back panel of the freezer is a telltale sign.
7. Condenser fan or start relay
If the compressor clicks on and off or the condenser fan does not spin, the fridge cannot cool properly.
8. Sealed system problems
Refrigerant leaks and compressor failures require a licensed technician and special equipment.
When to call a pro
If you have cleaned the coils, checked the settings and the fridge is still warm after 24 hours, schedule a diagnostic. The sooner the problem is found, the less food you lose.