How We Fixed a Walk-In Freezer Running Warm in Rancho Cucamonga
How We Fixed a Walk-In Freezer Running Warm in Rancho Cucamonga
At American Cool, Heat, Air & Commercial Refrigeration, we specialize in diagnosing and repairing commercial refrigeration issues quickly and efficiently. Our latest job took us to a Rancho Cucamonga business, where a walk-in freezer was running warm—a critical issue for food storage and business operations. This blog walks you through our troubleshooting process and how we restored the freezer to proper working order.
Troubleshooting the Walk-In Freezer
When we arrived, the walk-in freezer temperature was significantly higher than expected. Our first step was to assess the evaporator coils and check the fan operation—both crucial elements in maintaining a steady cooling process. The fans were operating correctly, and the liquid line wasn’t overly warm, indicating a potential issue with the condensing unit.
We then turned to the thermostat, an essential control point for the system. Testing it confirmed that it was working correctly, meaning the issue likely lay within the condensing unit.
Checking the Condensing Unit on the Roof
Next, we headed to the rooftop where the condensing unit was located. With two units present—one for a cooler and another for the freezer—we identified the correct system by checking for low-temperature-rated compressors and other indicators.
Upon inspection, we found that the condensing unit wasn’t running, even though the system was calling for cooling. The contactor was pulled in, leading us to suspect an overload issue or a failed component.
Identifying and Replacing the Faulty Contactor
Using a multimeter, we checked incoming and outgoing voltage. The readings confirmed that one leg of the contactor wasn’t making proper contact, meaning the compressor wasn’t receiving power. A closer look revealed that the contactor was in poor condition, with burnt and pitted connections.
At this point, we determined that replacing the bad contactor was necessary. After retrieving a new contactor from the truck, we carefully installed it, ensuring a wire-for-wire match.
Once we powered up the system, the compressor immediately started running, confirming that the faulty contactor was the root cause of the issue.
Final Checks and System Performance Testing
After replacing the contactor, we performed voltage and amperage checks to ensure proper operation. The system was now drawing the correct amperage, and power was evenly distributed. We also checked superheat readings and refrigerant pressures to confirm that the freezer was cooling properly.
Before wrapping up, we secured all panel screws to ensure the unit was properly sealed, preventing future issues due to loose components.
Conclusion
This job in Rancho Cucamonga demonstrates the importance of a systematic approach to walk-in freezer troubleshooting. By carefully checking key components—from coils and fans to electrical connections and contactors—we were able to quickly diagnose and resolve the issue.
If your walk-in freezer or commercial refrigeration unit isn’t performing as expected, don’t wait until it’s too late. Contact American Cool, Heat, Air & Commercial Refrigeration for expert maintenance, repairs, and system diagnostics to keep your business running smoothly.
Don’t let a faulty refrigeration system disrupt your business!
EXTENSIVE SERVICE COVERAGE FOR COMMERCIAL HVAC & REFRIGERATION SOLUTIONS
No Commercial HVAC or Refrigeration job is too small or too far for us. While our primary branches are located in Palm Desert and Rancho Cucamonga, California, we’re dedicated to reaching customers wherever they are in need.
Proudly serving cities across California, including Indio, La Quinta, Indian Wells, Bermuda Dunes, Thousand Palms, Cathedral City, Rancho Mirage, Santa Ana, Fontana, Moreno Valley, Glendale, Ontario, Garden Grove, Palm Desert, Irvine, Anaheim, Riverside, Palm Springs, and extending to Los Angeles and beyond. Your satisfaction is our priority, no matter the distance or scale of the project.
AMERICAN COOL HEAT AIR BRANCHES
PALM DESERT, CA
77564 Country Club Dr. #142,
Palm Desert, CA, 92211
RANCHO CUCAMONGA, CA
11175 Azusa Court, Suite 100,
Rancho Cucamonga, CA 91730