Why is the 'Clean' light flashing on my dishwasher?
A flashing Clean light indicates that the dishwasher has malfunctioned, specifically related to the heater circuit. You should call for service to have the heater circuit checked. This is different from the Clean light simply glowing, which just means a cycle has finished. (Page 21)
From the official Whirlpool Series 8575985 Dishwasher manual, page 21
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