I have a built in oven/convection oven . The temperature would not set I ordered a new touch screen and that seemed to cure the problem. However the main fan behind the control panels runs constantly now. The fans in the oven and convection oven seem to work properly. They shut off when the oven is not in use or when the door is opened. However the fan at the top of the unit to the right behind the controls will not shut off.
ANSWER Hello Mike. There is a thermal cut off inline with the fan wires. It is stuck closed and 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. http://forum.appliancepartspros.com/oven-repair-including-ranges-cooktops/4810-how-check-continuity-ohmmeter.html
Answered by AppliancePartsPros.com | Tuesday, October 15, 2013