How To Troubleshoot A Refrigerator Fan Problem


If you run your own restaurant, then you likely have a commercial refrigerator/freezer in the establishment to help keep food cool. This type of refrigerator is necessary since it meets food, health, and safety codes. These refrigerators are also bigger and they are made with materials that help to control bacterial growth. Your commercial refrigerator is a heavy duty appliance that is made to withstand constant use. However, you may see some minor issues popping up that are similar to the types of problems you see from your residential refrigerator. The build up of ice around the evaporator fan is one common problem. 

What Are The Signs Of An Evaporator Fan Problem?

There are several different signs that you will notice if your evaporator fan stops working. The main sign will be that the refrigerator no longer seems as cool as it should be, even though you hear the compressor motor running. In some cases, the freezer may also seem colder than usual. You are likely to see quite a bit of frost building on the evaporator coils and the inside walls of the freezer. This happens when condensation freezes extremely quickly and continues to form. The ice may be too great for the defrost system to handle all of it, so ice will likely continue to build. 

You will notice these things, because the evaporator fan will not be circulating cool air like it is supposed to. Air is cooled by the evaporator coils that are located in your freezer compartment. When the temperature rises in the refrigerator, a sensor tells the compressor motor to force coolant through the evaporator coils. Air becomes colder in the freezer and the fan moves the cold air down into the refrigerator. When the fan does not work, the cold air stays in place and continues to cool the freezer.

How Can You Fix The Issue?

In many cases, the evaporator fan will simply be built up with a layer of ice that prevents the blades of the fan from moving. Removing the ice will allow the fan to start working again. To keep the fan from moving while you are working, you will need to unplug the refrigerator. Don't worry about the food too much, because the repair will only take a few minutes. 

Remove the protective cover from the back of the freezer that protects the evaporator coils and the fan from damage. Remove the fan cover and inspect the blades for ice. Plug in a hair dryer and place it close to the frozen fan blades. Turn the hair dryer on high. When ice begins to melt, use a rag to force loose ice from the fan blades. Replace the fan cover and plug in the freezer to see if the fan blades move. If they do not, then contact an appliance specialist as soon as possible. The fan may need to be completely replaced. Contact a business, such as A1 American Commercial Refrigeration, LLC, for more information.   


10 May 2016

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