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Replacement parts for ADB1500AWW3 models | AppliancePartsPros.com

See the attachment for the tech sheet.

First try unplugging/removing power from the unit for 5 minutes or so, to see if the control board will reset.

You could try the following cleaning procedure
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.

If the above does nothing the usual way to troubleshoot whether it is the keypad/control panel or control board is to check the keypad with a meter.
If it checks out OK then replace the control board.

Still a bit of a crap shoot but your odds are better.

If you do the above tests then you may want to consider ordering from AppliancePartsPros. They will allow you to return a board if you do some basic troubleshooting and do not just order all possible parts and then just return those you do not need. See their return policy.