DIY: How to Replace Defrost Timer for Maytag

All Maytag refrigerators have a defrost heater, which is located behind the rear wall of the freezer.

The purpose of the defrost heater is to melt ice as it builds up on the refrigerant lines. The heater turns on and off periodically and is controlled by a defrost timer. The defrost timer is located in the temperature control housing inside of the refrigerator cavity on Maytag refrigerators. If the defrost timer stops functioning, the defrost heater will not turn on, causing ice to build up around the refrigerant lines, resulting in a diminished ability for the refrigerator to adequately cool.

Unplug the refrigerator from the wall outlet.

Open the refrigerator's fresh food cavity door and remove the screws from the bottom of the control housing, which contains the temperature controls and is located on the roof of the fresh food cavity.

Lower the control housing away from the roof of the fresh food cavity.

Pull the timer out of the control housing. The timer can be identified as it is a rectangular box with four terminals on the bottom. Compare the new timer to the old timer if you are unsure of the correct component.

Pull the wire harness off of the bottom of the old defrost timer and discard the timer.

Connect the wire harness to the new defrost timer.

Place the new timer in the control housing and press it firmly into position.

Resecure the control housing to the roof of the fresh food cavity using the screws that were removed.

Plug the refrigerator back into the wall outlet.

Things You Will Need

  • Screwdriver

About the Author

Andrew Todd has been writing since 2006. He has written for the Consumer Search website and the U.S. Attorney's Office for the Middle District of Florida. Todd has a Bachelor of Science in criminal justice from the University of Central Florida.