ok When you turn the dishwasher on when do you hear this hum ?
As soon as you start it or approx 2 min after.
Yes, when I press the normal cycle button, then hit the start button, It humms and the indicator light goes directly to clean, but the cylce has not started.
ok open the door ,pull the bottom rack out and in the front corner there is a float switch pick it up and down a couple of times ,then try to run the water ?
it did not work, nothing changed.
ok then you have a faulty water valve.
Here is a link to the part .
it is mounted on the front left corner under the unit .