I have a Whirlpool Gold Quiet Partner III dishwasher (Model# GU2548XTPS1) and it keeps flashing the soak & scour light. I have shut the power off to it and when I repower, it still flashes. Ocassionally I can get it to run for a minute or two. But I can’t get it to drain. I can’t cancel it. All buttons are unresponsive.
Here are your parts
Replacement parts for WHIRLPOOL GU2548XTPS1 Undercounter Dishwasher | AppliancePartsPros.com
Here is the tech sheet
http://www.servicematters.com/docs/wiring/Tech%20Sheet%20-%208535451.pdf
Often a flashing key is a stuck (shorted key), see how to check it in the tech sheet.