Whirlpool quiet partner 1 # DU1055XTSQ2

https://www.ifixit.com/Answers/View/501081/Whirlpool+Dishwasher+Blinking+Sani+Rinse

All you can do is turn the power off at the power point, leave it for a few minutes and then switch the power back on.

Are the dishes clean??? try unplugging (15-20mins) the unit and see if it resets the unit.

TRY A RESET CODE
Press the "Sani Rinse," "Heated Dry," "Sani Rinse" and "Heated Dry" buttons on the dishwasher's electronic control panel in quick succession to put the appliance in diagnostic mode.
Close the dishwasher door and engage the door latch.
Wait 10 seconds before pressing the "Cancel" button to reset the dishwasher.

Is start up after filling with water? After it fills the wash motor starts to work. Some times the spray arm could hit the heating coil when it turns. Make sure the spray arm is not loose. But most likely its the wash motor.

Hello,

press normal heated dryer normal heated dry normal the dishwasher should reset and start. You will need to check the heater this happens because the heater normally fails. Let me know,

http://www.appliancerepairlesson.com/

shorted controls

Had the same problem. Press the sani-rinse and heated dry button back and forth and it should reset.