I have a Bosch nexxt 500 series dryer that stopped heating. It was still running fine, just no heat. I did some research and found the Limiter as the possible problem. I pushed the red reset button. The dryer started heating up, but with in 1 cycle kicked off again. I called A.P.P. and spoke to Cecilia. She was very helpful. After a brief description of my situation she recommended just to replace the Limiter. I did so and that fixed the problem. Very simple replacement. It look longer to take the back off of the dryer then it did to replace the part.