SHU4302UC/U06 runs for hours. What's the fix?

There are several places on-line where you can find this parts. Depending on where you are. For example you can look up www.dlpartsco.com

Maybe wash temperature. The machine may be trying to heat the wash water to a preset temp and it is taking an extended time to get there. Maybe a faulty temperature probe or a bad element?
I know you will ask how this is possible when you have a final temp of 120 but that sound like a drying cycle temperature to me; not a wash temp.
I would leave the thermometer in through the cycle and you will probably find it will slowly get hotter in wash cycle and finally switch after a certain temp has been obtained.

Well not going into the dry cycle could be a timing issue or a EOC (control panel) issue and will need to be addressed. But most dishwashers these days have a active run time during normal cycle of 110 to 120 mins, and thats not including the heated dry feature. I would let the unit run and see if it will finish on its own, and if I say it pushes two and half hours then something is wrong. A tech would most likely have to look at it, also a power reset could help but thats like a 30% chance.

DrakeTech

possibilities are that of an inefficient heating element ie..scaled up if hard water area especially. whilst the cycle is being completed then the components are working... so other than the element check the drainage for blockages (slow draining adds time) & also water pressure as low pressure adds time to the filling..

There is a recall on the control board of many of these models. I have written a guide to help. It is here. Look for the phone number near the top.

I have a Bosch Dishwasher, SHU6805UC/U06, During a cycle it was interrupted by opening the door. It was left open for an hour. When the door was closed again the lights came on but the cycle did not continue. The motor did run but no water was rushing. Power interrupted to the machine did not enable it to reset or restart. How do we get it going again?
Mike,Laurie,& Dory

Check continuity of the heating element to see if it is broken/open.
The dishwasher prefers that the incoming water (water heater) be 120 degrees (F)

float switch is in the flood position and the drain pump is running.. there is water under the dishwasher or that switch is stuck up..

Hi,
You could try running the machine with the drain hose leading to a large bucket. If it works OK in this situation then the blockage will be most likely where the drain hose joins the house drainage system - often at a junction under the kitchen sink. With the drain hose disconnected you should be able to see the blockage and clear it with a suitable pointy tool.
Let me know if this sorts it. Thanks, D.

No, the water does not heat up. Thanks.