Refrigerator Not Cooling — 8 Most Common Causes & How to Fix Them

A refrigerator that stops cooling is an emergency — especially in South Florida where heat accelerates food spoilage.

Before you call, check these 8 causes in order. Some you can fix yourself in 5 minutes. Others need a technician. If your food is already warm, call Express Xpert at (888) 822-7754 for same-day refrigerator repair across South Florida or visit our refrigerator repair service page.

Is the Freezer Cold but the Fridge Warm?

This is the most common pattern and usually means one thing: the evaporator fan is not circulating cold air from the freezer into the fridge compartment.

Cause: Evaporator fan motor failed or ice buildup is blocking the fan because of a defrost-system failure.

Test: Open the freezer and listen — do you hear a fan running? If not, the fan has failed or is frozen over.

Fix: Technician needed. Evaporator fan replacement or defrost system repair.

8 Reasons Your Refrigerator Stopped Cooling

1. Evaporator Fan Motor Failed

Most likely cause when freezer is cold but fridge is warm. The fan moves cold air from the freezer into the fridge compartment.

Fix: Fan motor replacement — same-day repair.

2. Defrost System Failure

Ice builds up on the evaporator coils and blocks airflow.

Signs: Frost on back wall of freezer, poor cooling in both sections.

Fix: Defrost heater, thermostat, or sensor replacement.

3. Dirty Condenser Coils

Condenser coils underneath or behind the fridge can clog with dust. This is common in South Florida where AC runs constantly and pet hair accumulates.

Fix: Clean coils with a coil brush. Unplug the fridge, pull it out, vacuum and brush the coils carefully.

4. Condenser Fan Motor Failed

The fan that cools the condenser coils has stopped.

Signs: Fridge and freezer both warm, motor not running at back.

Fix: Condenser fan replacement — technician needed.

5. Start Relay Failed

The start relay is a small part that helps the compressor start.

Signs: Clicking sound every few minutes, compressor not running.

Test: Remove the start relay and shake it. If it rattles, it is often failed.

Fix: Start relay replacement — usually inexpensive and fast.

6. Compressor Failed

The compressor is the heart of the refrigerator.

Signs: No cooling at all, no sound from compressor, hot at back.

Fix: Compressor replacement is a major repair. Get a quote and compare repair value if the fridge is over 10 years old.

7. Refrigerant Leak

Refrigerant leaks reduce cooling capacity slowly over time.

Signs: Gradual cooling loss over weeks, oily residue near compressor.

Fix: Technician needed for leak detection, repair, and recharge.

8. Thermostat Set Wrong / Door Left Open

Before calling anyone, check the thermostat setting (37°F for fridge, 0°F for freezer) and inspect door gaskets for gaps.

What to Do Right Now

1. Move perishables to a cooler with ice immediately
2. Do not open the fridge unnecessarily
3. Check whether the freezer is still cold
4. Call for same-day repair if food is at risk

Express Xpert technicians are available today across Miami-Dade, Broward, and Palm Beach. Call (888) 822-7754.

Need a technician in South Florida? Call Express Xpert at (888) 822-7754 for same-day appliance repair. Start with our refrigerator repair page for direct booking help.