Take the back panel off, and look for a small white piece, that is an inch and a half long, and a half inch wide, with 2 wires coming to it. Make sure the dryer is unplugged when you do this. Take the two wires off, and put them together, and put a little tape around them. Then plug it in, if it works, that part is a thermal fuse. Replace it.If it does not work replace the ignitor. I can be reached at my web site, at ApplianceEducator.com Tom | 
Gas dryer runs but no heat 
