Why does my dishwasher start washing then screen goes blank and drains

Why does my dishwasher start washing then screen goes blank and drains

I have a Matag dishwasher. Model MDB4949SDH3. It starts and fills up and gets hot. You can hear it start to wash and then the screen goes blank and the timer looks like a clock that just got reset. It then drains and turns off. I have tried all the cycles and it does the sane thing to all of them. Does anyone know what might be happening?