Reset it by pressing the keys HEATED DRY - NORMAL - HEATED DRY - then NORMAL again in sequence within 5 seconds. All the lights should come on and it will begin a diagnostic cycle. Either let it run, or press cancel and the board will be reset so you can try a wash again. If this fails please give us the model number located inside the door
Also try this:
1) Crack the door open.
2) Within 3 seconds press the following sequence - Hi Temp Scrub, Energy Saver Dry, Hi Temp Scrub, Energy Saver Dry
3) Close and latch the door
4) Press the cancel button (the circle with the triangle in it)