When pressing 'start,' door no longer locks, and pump begins to run, but nothing else. When I power it off, pump continues to run, until I unplug it.

I checked the pump filter... clean. I powered the machine off, unplugged, waited 30 seconds, 'signal, delay start, signal, delay start,' and the same thing happened as when I press start... a couple of clicking noises, then the pump starts... no door lock, no display.

Any ideas?