Ok, that makes me feel a little better that it is not just starting up by itself.
Looking at the wiring diagram, the only thing that would cause the
problem you describe is the timer. click for picture
I have had this come up on dryers of your type many times. Sometimes you can
just wiggle the timer knob up and down it will stop.
If you replace the timer the issue will go away.
The part number for the timer is W10185988 and you can purchase it here if you want to repair it yourself. click here for part
It is a very easy job to do. Just two screws hold it onto the control panel and the wire plugs just pull off.
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