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
Symptom
Likely Cause
Homeowner Action
Refrigerator warm, freezer cold
Blocked damper, failed evaporator fan, airflow issue
Clear vents and listen for fan operation
Both compartments warm
Dirty coils, condenser fan issue, compressor/start problem
Clean coils, check fan noise, call if no cooling returns
Frost on back freezer wall
Defrost system failure
Unplug only if needed to protect food, then book repair
Compressor clicks repeatedly
Start relay or compressor fault
Stop cycling the unit and schedule service
Water inside refrigerator
Clogged defrost drain or door seal issue
Clear accessible drain path and inspect gaskets
Food spoiling quickly
Temperature above safe range
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.