Here are your parts
Replacement parts for WHIRLPOOL DU927QWDB1 | AppliancePartsPros.com

Here is a tech sheet
http://www.servicematters.com/docs/wiring/Tech%20Sheet%20-%203379195.pdf

Try removing power from the unit for 10 minutes or so to see if it will reset.

Check out the tech sheet to be sure you are not stuck in a diagnostics mode.

Check what other keys may work, this may help narrow down the cause.

Could be the normal key is toast. Check the control panel/keyboard with a meter.
NOTE: The keypad is a matrix type (has diodes) so the meter polarity matters when checking the key. With the negative lead on P1-3, the positive lead on P1-12 and the meter set to a mid-range scale the resistance should drop to close to 0 ohms when the key is pressed.

You may want to try the following
Connector Cleaning / Checking
Unplug the unit
Open it up
Remove the ribbon cable from the keypad to the control board at the control board.
Clean the edge connector.
If it is the type where there is not a connector just the insulation is removed, it can be cleaned with a pencil eraser. Do not use an ink eraser as it is too abrasive.
Check the tracks in the ribbon cable for hairline cracks. A magnifying glass helps here.
Would not hurt to clean the connector on the board. Use electronics contact cleaner or isopropyl alcohol and a tooth brush. Be gentle and do not reconnect till all the solvent evaporates.
Reconnect everything and give it a try.