Hello from JA My name is Woody. I will be glad to assist you today. I have been servicing ALL Major Brands of Appliances for 32 Years, and have over 100,000 in home repairs under my belt.
I1m very sorry to say there is NO reset button.
The only reswet you can do is to turn the power off to the unit and them back on this might reset the control .
And you say it is ((getting power)) !! how have you verified this ?
I PLUGED THE UNIT INTO THE GARBAGE DISPOSAL RECEPTICLE THAT WORKS AND NO CHANGE IN DISHWASHER
OK but that realy does not tell us if the unit is getting power to the controls or not .
You could have a faulty cord or a loose connection where the cord attaches to the unit.
Do you have a Volt-Ohm meter to test power at the junction box under the unit behind the bottom kick plate.
And could your model number of the unit be ((DU18D4A))?