Heater, Defrost

Troy Z for Model Number frt17g4bw1

Answer Hello Troy. The heater [AP21500134] should read closed for continuity. You can test this with a multi-meter TJMA-DMT3. Here is a link on how to use a multi-meter. http://forum.appliancepartspros.com/oven-repair-including-ranges-cooktops/4810-how-check-continuity-ohmmeter.html 

Pat P. for Model Number FRT15G4BW3

Answer Hello Pat! You do seem to have a defrost system failure. It could be any of the three listed parts; defrost timer 215846602, defrost thermostat 5303918202, or the defrost element 5303918203. You will need to test each part to see if it has become defective. You can test these parts using a multimeter TJMA-DM1. Here is a link from our free repair forum you can refer to for help with using a multi meter. Hope this helps, thanks! http://forum.appliancepartspros.com/oven-repair-including-ranges-cooktops/4810-how-check-continuity-ohmmeter.html