So if the high limit is reading closed with no power to it, then it must be my timer?
Answer Hello Slam. No, if the high limit is reading closed, it can start to break down under load conditions and cause the unit to fail in heating properly. That is why it was suggested to test when running and see if it continues to feed AC power and break AC power. This is dangerous due to a live power test and you need to use caution here. 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