Customer Questions and Answers for Refrigerator Defrost Timer by Ge

Hello Steve. You will need to test the defrost heater and defrost thermostat. They should read closed for continuity when cold. If they are good, the timer will need to be replaced. You can test this with a multi-meter TJMA-DMT3. Here is a link on how to use a multi-meter. Hope this helps.http://forum.appliancepartspros.com/oven-repair-including-ranges-cooktops/4810-how-check-continuity-ohmmeter.html We will need your model number to look the parts up for you. Hope this helps. http://www.appliancepartspros.com/modelnumber_locator.aspx