What Is a Reefer Unit Failure and How to Avoid It?

Early Signs of Reefer Unit Failure

---

Reefer unit failure can be a nightmare for transport companies, especially when delivering temperature-sensitive goods. A single breakdown can lead to product spoilage, financial loss, and frustrated clients. Understanding the most common causes of reefer unit failure is the first step to preventing costly issues.

Reefer unit repair on refrigerated truck

Reason #1: Poor Maintenance

Neglecting regular maintenance is the number one cause of reefer unit failure. Filters get clogged, belts wear out, and refrigerant levels drop over time. These small issues can lead to total unit shutdown if not addressed.

Prevention tip: Create a maintenance schedule that includes inspections, filter replacements, refrigerant checks, and system diagnostics at least once a month.

Reason #2: Electrical Issues

Faulty wiring, corroded connectors, or weak batteries are frequent sources of reefer unit failure. Electrical issues can interrupt the system’s power supply or cause false alarms.

Prevention tip: Perform routine electrical checks and replace worn-out components before they cause a breakdown.

Reason #3: Sensor Malfunctions

Temperature sensors that provide inaccurate readings can cause the unit to overcool or undercool, endangering cargo.

Prevention tip: Regularly test and calibrate sensors. If you notice erratic behavior, replace the sensor immediately.

Reason #4: Door Seal Damage

If the trailer door seals are damaged, warm air can seep in, forcing the unit to overwork and eventually fail.

Prevention tip: Inspect door seals weekly for cracks or tears, and replace them as soon as you find damage.

Reason #5: Operator Error

Improper settings, incorrect start-up procedures, or failing to pre-cool the trailer are all examples of human error that lead to reefer unit failure.

Prevention tip: Train your team on proper operating procedures and post guidelines inside each trailer for easy reference.

Reefer unit failure isn’t always avoidable, but with the right preventive measures, you can significantly reduce the risks.

At Frimax LLC, we specialize in commercial refrigeration services and can help ensure your fleet stays running smoothly. Contact us for preventive maintenance, emergency support, and expert inspections.ted trucks and trailers throughout Florida. Contact us today for a free assessment.