Refrigerator not cooling but the freezer works: causes and fixes

In most frost-free refrigerators, the cold is made in the freezer and blown into the fresh-food section through a vent or damper. So when the freezer is fine but the fridge is warm, the problem is usually that cold air is not getting through. Put a thermometer in the fridge; it should read about 37 °F.

1. Blocked air vents

Check the vents between the freezer and the fridge. A bag of frozen vegetables pushed against a vent, or packed shelves in front of the fridge outlet, can stop the airflow. Clear them and wait a few hours.

2. Evaporator fan

Open the freezer door and press the door switch. You should hear and feel a fan running behind the freezer back panel. If it is silent, noisy or slow, the fan motor may have failed. The freezer can stay cold for a while without it, but the fridge warms up.

3. Frost on the evaporator

Frost or ice visible on the back panel of the freezer, or a fan that is noisy because it is hitting ice, suggests a defrost system fault: the heater, defrost thermostat, or the control or timer. A manual defrost (unplug with doors open for 24 hours, with towels down) will temporarily restore cooling, but the fault will return.

4. Air damper

Many refrigerators use a damper to control how much cold air enters the fridge. If it sticks closed, the fridge warms up. Some are mechanical; others are motorized and controlled electronically.

5. Condenser coils and fan

Dirty coils or a failed condenser fan make the whole system weaker. The fridge section often warms first. Vacuum the coils and check the condenser fan near the compressor is running.

6. Temperature sensor or control

A faulty thermistor or control board can misread temperatures. These need testing with a meter.

Diagnosis summary

Fan silent	Evaporator fan motor or control
Frost on back panel	Defrost system
Fan runs, no airflow into fridge	Damper or blocked duct
Both sections slightly warm	Coils, condenser fan or sealed system

Many of these faults come up again and again in service calls. SmartFix Appliances has a good overview of the refrigerator problems technicians see most often. If your refrigerator has an ice maker that also stopped, see our ice maker troubleshooting guide.