I have a Gas DRYER we bought new 3 years or so ago and it will not heat. I have throughly cleaned out all lint from everywhere including the exhaust and I have verified with a flashlight it is clean of lint. I turned it back on and it worked for 30 -60 seconds of heat maybe longer but then no heat and I need to know what my next step should be . I live in Belleville Michigan.
It sounds like you have a bad secondary coil on the gas valve. Replace the coils on the gas valve, and that should do it. Tom Appliance Educator, Appliance Parts, Washer and Dryer Parts, Refridgerator and Freezer Parts, Stove and Oven Parts