Heat Element won't turn off

I came home today to a very HOT dishwasher. The cycle ended around 8:30 a.m. and the heat element was still on at 6:45 p.m. The Clean light was on the display panel. I had to reset the breaker to turn the heat off.
Any suggestions would be appreciated.

Bought New Timer. How Do You Get It To Line Up With Face Plate Of The Machine To Set Prper Cycle?

You don’t have to line it up just mount the timer with the screws you took out of the old one. Then reinstall the knob and the knob will only go on one way to line up the cycles. Hope this helps!!