Heavy and Light washes work but the Regular wash has not worked in a year or two. Won’t even light up. Is this a control panel issue or a control board issue and how can I tell which? Thanks in advance for any advice.
Here is the service manual for your model dishwasher. It has a troubleshooting guide that you may find helpful.
http://appliancejunk.com/forums/index.php?action=downloads;sa=view;down=83