Start light keeps blinking

SOURCE: dishwasher clean light blinking won,t run or let

here is the user manual you can downloads
Whirlpool GU2700XTSS / GU2700XTSY Built-in Dishwasher
and here is the parts list that will help you fix it you need to check the breaker to make sure it has not tripped.
here is the parts list and prices, hope this helps get back to me if you need more help thanks for using fix-ya
http://www.appliancepartspros.com/partsearch/model.aspx?model_id=5135108&diagram_id=954020#d954020

SOURCE: "Clean light" keeps blinking; dishwasher won't start new cycle

Check to see how it's loaded. If something is obstructing either of the spray arms it will not start. I had this same problem and checked to see if there was something impeding the arms - I found there was. Reloaded the unit and it's running like a champ now!

SOURCE: "Clean light" keeps blinking; dishwasher won't start new cycle

close the door and to cancel that just press hi temp and hetaer dry again hi temp and heater dry and all the lights is gonna light up, it getting into test mode.
After that press cancel
Now get somebody to replace the thermistor of your machine

SOURCE: Dishwasher lights blinking

QuietGuard3: Clean light flashing 7 times? Press Heated Dry, press Normal Wash, then press Heated Dry again and press Normal Wash again (that's 4 button-presses) and that should fix it.

SOURCE: "Clean light" keeps blinking; dishwasher won't start new cycle

It says in the manual to check the heating element.