Quick Answer
If your refrigerator is not cooling, start with the simple checks: confirm the temperature settings, make sure the doors seal tightly, clear blocked air vents, and clean dusty condenser coils. If the refrigerator still cannot reach about 37 degrees F or the freezer cannot hold 0 degrees F, the problem may involve the evaporator fan, condenser fan, start relay, thermostat, control board, refrigerant system, or compressor. Stop troubleshooting if you smell burning, see water near electrical parts, hear clicking from the compressor area, or notice food temperatures rising into the unsafe zone. In those cases, schedule professional refrigerator repair.
Symptoms at a Glance
Refrigerator warm, freezer cold
Likely cause: Blocked damper, failed evaporator fan, or airflow issue.
Homeowner action: Clear vents and listen for fan operation.
Both compartments warm
Likely cause: Dirty coils, condenser fan issue, or compressor/start problem.
Homeowner action: Clean coils, check fan noise, and call if no cooling returns.
Frost on back freezer wall
Likely cause: Defrost system failure.
Homeowner action: Unplug only if needed to protect food, then book repair.
Compressor clicks repeatedly
Likely cause: Start relay or compressor fault.
Homeowner action: Stop cycling the unit and schedule service.
Water inside refrigerator
Likely cause: Clogged defrost drain or door seal issue.
Homeowner action: Clear the accessible drain path and inspect gaskets.
Food spoiling quickly
Likely cause: Temperature above the safe range.
Homeowner action: Use a thermometer and move perishables if above 40 degrees F.
Repair Difficulty Meter
DIY-friendly: checking settings, leveling the refrigerator, clearing blocked vents, cleaning condenser coils, replacing a loose door gasket if the part is confirmed.
Moderate: replacing a thermostat, fan motor, damper, or start relay. These repairs require correct diagnosis, model-specific parts, and safe electrical handling.
Professional repair recommended: sealed-system work, compressor replacement, refrigerant leaks, control board diagnosis, wiring damage, repeated breaker trips, or any repair involving burning smells, sparks, or standing water near electrical components.