John C Henderson , KY July 09, 2014 Appliance: Whirlpool Undercounter Dishwasher DU1100XTPB6 Whirlpool Dishwasher Du1100xtpb6: Dishwasher would not turn on or lights erratic. How to replace Control Board. The Whirlpool dishwasher Quiet Partner II would sometimes not turn on. When and if it did turn on the lights were erratic and the dishwasher would not run. With help from this site I determined the control board was probably bad. The new control board was easy to install and it solved the problem. My dishwasher is like new again! 14 People found this story helpful Do-It-Yourself Rating: Repair Time Estimate: 15-30 minutes