Hi, I had the same problem with mine, and for my machine at least, the solution was simple. On the back of the dryer is a small plasic plug, (??orange), which seems to be part of the thermal cut-out mechanism, and when I pressed this in, hey pressed oh, (groan), I got heat! I know you've probably tried this, but sometimes the obvious can be overlooked. Hope this helps,
Peter
Peter Curtis-Cook, June 2004