Commercial Refrigerator Not Cooling? Quick Checks To Run First

A commercial refrigerator that stops cooling puts food safety and your business at risk. Before calling a technician, run these quick checks. Many cooling issues have simple causes that an operator can spot safely.

Check the Power Supply

Confirm the unit is plugged in and the circuit breaker has not tripped. Verify the outlet delivers the correct voltage—most commercial refrigerators run on 115V or 208-240V. A loose plug or voltage drop can shut the compressor down without warning.

Verify the Thermostat

Staff sometimes bump the dial during cleaning. Make sure the thermostat holds food at 40°F (4°C) or below for refrigerators, and 0°F (-18°C) or below for freezers. Place a calibrated thermometer on the middle shelf and compare it with the display.

Inspect Airflow and Coils

Refrigerators need clear airflow to release heat. Pull the unit a few inches from the wall and check that the condenser coils are not clogged with dust or grease. Clean coils with a soft brush or vacuum. Avoid overloading shelves—blocked vents prevent cold air from circulating.

Check Door Gaskets

A worn gasket lets cold air escape and forces the compressor to run constantly. Close the door on a thin strip of paper; if it pulls out easily, the seal is weak. Check hinges for alignment and make sure the door closes fully.

When to Call a Technician

If these checks do not restore cooling, the problem may involve refrigerant, the compressor, or the defrost timer. Those repairs require a licensed technician. Keep a log of temperatures and error codes to speed up the service call.

NTS provides one-stop commercial kitchen solutions for restaurants, hotels, and food service businesses across Southeast Asia, Africa, and South America, from equipment selection to complete kitchen supply. Visit www.ntsmart.com to plan your kitchen with an experienced B2B export partner.

• FAQ: What temperature should a commercial refrigerator hold?

  A commercial refrigerator should hold food at 40°F (4°C) or below. Freezers should stay at 0°F (-18°C) or below.

• FAQ: Why is my commercial refrigerator running but not cooling?

  Common causes include blocked condenser coils, overloaded shelves, a faulty thermostat, or a worn door gasket. Check these areas first.

• FAQ: How do I test a refrigerator door seal?

  Close the door on a thin strip of paper. If it slides out easily, the gasket is not sealing properly and should be replaced.

• FAQ: How often should condenser coils be cleaned?

  Clean condenser coils every one to three months, or more often in greasy kitchen environments, to maintain proper airflow and cooling.

• FAQ: Does NTS repair commercial refrigerators?

  No. NTS supplies equipment and coordinates complete kitchens as a B2B exporter. Repairs and parts service are handled by qualified local technicians.