Greetings,
This is my first post, thanks for this great forum. I have been troubleshooting this problem of a month or so. Once the dishwasher fills and the pump starts it sounds like a groaning sound, much like a car trying to start on a very cold morning. I have checked to be sure there is no blockage or obstruction in the food grinder and there are no foreign objects in or under the screen area.

I was prepared to order a replacement pump for the unit until I had a bright idea this morning to try something. The pump was sounding like it didn't have enough water in it, like it was operating dry. So I thought that I would add a pitcher of water to the dishwasher after the pump kicked in. Low and behold it ran as quite as a mouse and sounded like it was brand new. I can hear water entering the dishwasher during the fill cycle.

My question is, does anyone have input as to whether it is the inlet gate sticking or is it the float that prevents over flow. The float is free moving. Also 3 or 4 months ago I had to have the electronic panel replaced, the control unit. This problem started shortly after that, may be totally unrelated but wanted to give an accurate as possible picture of what is happening.

Any input would be deeply appreciated.

Thanks
Dan McKeever

Here are your parts
Model Search

And a tech sheet
https://www.servicematters.com/docs/wiring/Tech%20Sheet%20-%208269519.pdf

Normally dishwashers just fill by time, the float switch is just a safety device to prevent an overfill/flood.

The most common cause of a low fill is a partially clogged screen filter on the inlet side of the water inlet valve.

Remove the kick plate
Shut the water supply off
Get a shallow pan that will fit under the valve
Loosen the inlet hose, let it drip/run till the pan is full, then re-tighten till the dripping stops, empty the pan and repeat till it is empty. Prevents having to mop up the floor.
Remove the inlet hose and check the inlet screen filter.
Odds are good that it is dirty
You may have to remove the valve from the machine to do this.

Do not remove the screen, it is there to keep crud out of the valve which could hold the valve open and cause a flood.

May want to drain some water out of your hot water tank, use either the drain or the pressure release. Let it run till the water is clean. A fair amount of crud can accumulate at the bottom of the tank. I would do this before cleaning the valve filter.

If the screen is clean then perhaps the valve is not opening fully and needs replacing.

I did clean out the filter and I was optimistic because there was a lot of stuff on the screen, but that didn't work. I ultimatly replace the fill valve and that took care of my problem. My dishwasher is back to being very quiet again. Thanks for having this forum, its a great tool.

Very strange.
Also seems that the filter screen got dirty awful fast, especially since you have a new hot water tank.
I wonder if the crud is coming from the inside of the pipes.
Could be that the deposits are flaking off the pipe walls.
I would disconnect the hot water line at the dishwasher and run it into a pail perhaps you have a partial plug in the line or at the shut off.

I am afraid the only other option I can think of is to replace the valve.
This time though I would take the old valve apart to see if you can figure out what is causing it to only partially open.

I would also check that the valve is getting 120 volts when it should.
Low voltage might cause this though it is a long shot.

Thank you
I am interested in what is happening here as it is outside the box.