My Whirlpool dishwasher is stuck blinking 'Start' and 'Cleaning'.

My Whirlpool dishwasher is stuck blinking 'Start' and 'Cleaning'.

My Whirlpool dishwasher (WDF750SAYM2) is stuck blinking 'start' and 'cleaning'. When I push Cancel the Start button flashes. There is water in the bottom and the dishwasher will not complete a washing cycle. It does not respond to diagnostics mode. Also if I close the door it seems to just start a wash cycle but never finish. If I press cancel nothing happens. I have to open the door to stop it and water is left in the bottom.