The thermostat that needs resetting is behind panel on the back of the dryer, take the panel off and fixed to the inside of the panel is the heating elements which are attached by 2 screws be careful as elements delicate, take the heating element off the panel and the thermostat's are attached to a metal plate above the elements look like 2 black pennis but a bit bigger , one will have a pin hole in it use a needle to put into hole to reset thermostat u should hear and feel it click ,it should now heat up then just put back together and check all filters clear or will trip again . hope this helps
Neil
April 2009