Freezer Evaporator Fan – Is It The Cause Of Your Problems?

Posted on: 14 January 2016

Is your freezer struggling to maintain the freezing temperature it needs? Does it sometimes make odd noises that you cannot explain? Does the light come on inside your freezer, but it isn't freezing cold inside? These are all signs that there could be a problem with the evaporator fan.

What is the evaporator fan?

The evaporator fan is located in the back of your freezer. It circulates the air over the refrigeration coils that absorb heat and allow the cold air to be circulated through the freezer. If this fan fails, the air inside your freezer will not cool the way that it should.

How do you determine if the evaporator fan is the problem?

Troubleshooting the unit will tell you if the evaporator fan is causing the problems.

Start by unplugging the freezer. In many cases, this requires the freezer to be moved out away from the wall. To do this without damaging your flooring, tilt the unit back towards the wall and slide two pieces of cardboard under the front feet. Doing so will make it easier to pull the unit away from the wall without gouging your flooring.

Remove the contents of the freezer to access the evaporator fan in the rear of the freezer. When you look in the back of the freezer, you should see an access panel that needs to be removed. In some cases, this requires removing a few screws, but other units have small clips that hold the cover in place. Remove the cover and set it aside.

Now that the evaporator fan housing is exposed, label the wires going to the housing and the wires on the housing. This will help you reconnect everything the right way when you are done testing the unit. After the wires are labeled, disconnect the wiring and remove the housing.

Spin the fan with your finger. Does it spin smoothly without any snags? Fans that don't freely spin likely have a motor that has gone bad and needs to be replaced.

If the fan moves smoothly, use a multi-tester to test the fan for continuity. Set the ohms to X1 and touch the terminals on the fan with the probes. The display should read zero ohms. If it doesn't, the fan needs to be replaced.

If your fan needs to be replaced, or you haven't found the problem, talk with your local appliance repair technician for assistance.

For appliance repair, contact a company such as Kaylor Appliance & Refrigeration Service.