Both the "thermostats" on this model are in fact thermal cutouts designed to protect for an overheat scenario neither one is a "one-shot", they are basic bi-metallic thermal cutouts, housed inside a cylinder. If you remove them as described above, you will notice that on the reverse side of the metallic disc is a small hole, if you carefully insert a very small screwdriver, or indeed a cocktail stick and push, it will "pop" and the bi-metallic element will reset, refit the thermal cut-out and all should be fine. If it continues to "trip", this is indicative of a problem and should be investigated, more than likely a blocked lint trap etc. Hope this helps.
Richard, January 2008