First try and power cycle the dishwasher, meaning turn the breaker off to it for 5 minutes, then back on again and see if everything works normal again.
If not, follow these directions below.
Here's the machine control board for your model: Configured Service Machine Control Board WD21X32165
First you will need to disconnect power to the dishwasher and drop down that machine control board, its located underneath the dishwasher, once you remove the lower bottom access panel.
(click to enlarge)
Then restore power to the dishwasher, If the STATUS LED on the machine control board is blinking, then its good and the problem is the UI Board.
Here's the user interface(UI) Board for your model you can order:
WD21X23461 Kit Svc Ui Top Logic
Remember to set the jumpers on the new UI Board before you install it. The instructions always come with the new UI Board and shows you how to set the jumpers.
--->If the personality is not set by using the 4 jumpers, the buttons, LED’s or cycles will not function properly.
Let us know how it goes.