Answer Hello Rowaida. Check and see if the thermal fuse is bad or if the door switch is bad. Either will cause the issue you are having. 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 Read More... Answered by AppliancePartsPros.com | Monday, October 21, 2013