Re: Whirlpool ADP903 Dishwasher Flashing light
hi,
with power on push and hold start button for 5 seconds, release and see if the electronics resets.
If not with power on push and hold start button for 3 seconds and select no 1 on the programme selector, release the start switch.
This puts your appliance into a test mode where any failure will be diplayed by a sequence of lit LEDs please take note of the lit ones, if you come back here with a fault sequence.
There is equipment available to a small minority of repairers who may be able to reset the eeprom on your PCB, but the cost to my knowledge is currently £72.50 for the call out.
kevin