oops, I totally misread the post I read it will not heat or turn on. Ok not turning off is a diffrent problem. If your dryer has a sensor dry or an auto dry feature, it will not turn off by itself if there is no heat. fix the heat problem and it will shut off.
Funny, I am having the same problem with a GE electric dryer- exactly. I am going to test the voltage tomorrow.
I switched it from a 4 prong to a 3 prong, but bought the dryer used so it could very well be a problem with the dryer itself.
Post when you find the problem!
I had the same problem with my electric dryer a few years ago...it was a failed heating element. I've seen it on several other electric clothes dryers as well. The heating elements break over time due to repeated heating and cooling.
Sometimes it's hard to see the break with the naked eye because the heat is what makes it open, but it's easy to check the element using a continuity tester.
The reason the dryer keeps running is due to, as hardwareman said, the humidity sensor is operating as it should.
A new heating elements can usually be bought at a local appliance parts supply house as they are a common expendable item. They are relatively easy to change by removing the ducting that is screwed onto the back of the dryer. While you are in there you can clean the blower wheel and duct of all the accumulated lint and hair ties...ask me how I know!
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