I have a Kenmore dryer Model C1108470291, S/N ICD5157856, DR-6. When I set timer to dry for 60 minutes (or any time) it runs the full 60 minutes but the drayer does not turn off. Even with push-start switch set to off. It will just keep running and running until door is opened or unplugged. The timer knob seems to be moving according to timer and is decreasing. There is "beep" sound at the end of the drying cycle.
What is wrong and how do I fix it.
Thank you in an advance for your help.