How to Troubleshoot Commercial Refrigeration Systems


Commercial refrigeration systems are used to store and preserve food products in restaurants, grocery stores, and other commercial establishments. These systems are typically made up of a compressor, condenser, evaporator, and receiver. The compressor circulates the refrigerant throughout the system while the condenser dissipates heat from the refrigerant into the surrounding air. The evaporator absorbs heat from the food products inside the refrigerator and transfers it to the refrigerant. The receiver collects excess liquid refrigerant from the evaporator before returning it to the compressor.

If your commercial refrigerator isn’t keeping your food cold enough, there are a few troubleshooting steps you can take yourself before calling a repair person. You’ll want to check each of the components to ensure that they are functioning. If you can’t resolve the problem quickly, you’ll need to contact commercial refrigeration repair services to address the issue quickly. Keep reading to learn more about troubleshooting commercial refrigeration systems.


When troubleshooting a refrigeration system, it is important to test the thermostat to ensure that it is working properly. The thermostat is responsible for turning on and off the compressor, and if it is not working correctly, the compressor will not turn on, and the system will not cool. The easiest way to test the thermostat is to use a multimeter. Set the multimeter to resistance and touch the two probes together. If there is resistance, then the thermostat is working correctly. If there is no resistance, then the thermostat is not working correctly and needs to be replaced.

Evaporator Coil

The evaporator coil is a key component of the refrigeration system. It is responsible for cooling the gas and liquid refrigerant as it passes through the coil. If the evaporator coil is not functioning properly, the entire system will be affected. There are several things that can go wrong with the evaporator coil and cause it to not function properly.

One common problem is a dirty or blocked coil. This can be caused by dirt, dust, or other debris that has collected on the surface of the coil. When this happens, the airflow over the coil is reduced, and it cannot cool properly. Another common problem is a frozen evaporator coil. This can be caused by a low refrigerant charge, an incorrect air flow setting, or a dirty filter. When the evaporator coils freeze over, they cannot dissipate heat and will eventually burst.

If you suspect that there is something wrong with your evaporator coils, there are several things you can do to troubleshoot them. The first step is to check for any obvious problems such as dirt or ice buildup on the coils. Next, check to make sure that there is enough refrigerant in the system and that it is being circulated correctly. Finally, check the airflow settings and filters to make sure they are clean and free of obstructions.

Condenser Coil

The condenser coil is the component of a refrigeration system that transfers heat from the compressed gas to the surrounding environment. If this component becomes blocked or dirty, it can cause the system to fail. Some common symptoms of a malfunctioning condenser coil are decreased cooling capacity, increased energy consumption, and water leaking from the unit. In order to troubleshoot a condenser coil, you will need to inspect it for obstructions and clean it if necessary. You may also need to check the compressor and other components of the system for abnormalities.


When checking the compressor, you want to make sure it is running and that it is not overloaded. You can do this by feeling the compressor’s housing. It should be warm to the touch but not too hot. If it is too hot, then the compressor is overloaded, and you will need to correct that before continuing. Additionally, listen for any abnormal sounds coming from the compressor. If there are any unusual noises, then you will want to have a technician take a look at them.

Your commercial refrigeration equipment is important to ensure that food remains at safe temperatures. If something goes wrong with your equipment, it is important to troubleshoot commercial refrigeration systems in order to ensure the system is up and running properly as soon as possible.

About Author

LaDonna Dennis

LaDonna Dennis is the founder and creator of Mom Blog Society. She wears many hats. She is a Homemaker*Blogger*Crafter*Reader*Pinner*Friend*Animal Lover* Former writer of Frost Illustrated and, Cancer...SURVIVOR! LaDonna is happily married to the love of her life, the mother of 3 grown children and "Grams" to 3 grandchildren. She adores animals and has four furbabies: Makia ( a German Shepherd, whose mission in life is to be her attached to her hip) and Hachie, (an OCD Alaskan Malamute, and Akia (An Alaskan Malamute) who is just sweet as can be. And Sassy, a four-month-old German Shepherd who has quickly stolen her heart and become the most precious fur baby of all times. Aside from the humans in her life, LaDonna's fur babies are her world.

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lopez mason
lopez mason
1 year ago

There are too many problems here. we become what we behold. Maybe I should consult an expert.