I had a similar problem: unresponsive buttons, then the 1 hour wash button led was on but the other buttons weren't working at all.
I power off for more than 30 seconds and after that everything return to normal.
Thank you for the hint!
Press these keys :
Heated Dry----> Normal-----> Heated Dry-----> Normal
All the l.e.d.s should lite up and then, if you push start, it will go from function to function. push the button 8 or 9 times, then
Reset the power to the unit via the circuit break, then run a normal wash cycle and see if it completes...