The dryer will start in any mode and run from 7-30 seconds and stop.
It will restart immediately.
I am figuring on a bad thermistor and or a bad electronic control.
Timed Dry,Air Fluff and Auto dry same results in any mode. That to me, eliminates the thermistor
When I do the diagnostic test I do not hear any beeps, but my hearing has been really bad for years.
All connections appear in good order. Voltage is good.
It does this with a load or no load.