there are two thermal sensors located on the side of the combustion chamber. One is on the top right and the other on the lower left. If either of these sensors fails the dryer will run but no gas will flow and the dryer won't get warm. The sensor on the lower left has a reset button on top. If it overheats and trips you can simply push the button and reset it. However, I was told that once it opens it will probably happen again and it should be replaced. It is recommended that both sensors be replaced as a set.
airkool at hotmail.co.uk, January 2011
