''clean'' light flashing (whirlpool Dishwasher GU2300XTLS1 model)

I had the same problem recently and a repair person came to my home to fix the dishwasher. He said he had to reset the control panel. He did this simply by making sure the soap dispenser door inside the washer was closed, then making sure the main dishwasher door was closed and locked. Then he quickly pushed the Heated Dry button and the Hight Temp wash button alternately. He said each button needed to be pushed twice within five seconds. After he did this all the lights on the control panel came on, then turned themselves off before the washer went in to a test cycle. This simple reset fixed the whole problem. Works great so far.