More wisdom from the swamp. For safety reasons manufacturers have cleverly installed a cent switch on the end of the motor. They want the heater element to be on ONLY if the motor is running which is blowing the fan and tumbling the clothes. You don't want heat if the motor ain't running(not good) If the fan ain't blowing the heat builds rapidly and the limits kick in killing power to the element.
Sometimes the heat builds faster than the bi-metal can react, in that case a fuse melts killing everything on electric models but killing only the gas in gas dryers.