Kitchenaid Dishwasher model 577-0 draining problem

Dishwasher Repair
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1

My dishwasher leaves dirty dishes covered with film of debris particles. Out of frustration I went through an extensive troubleshooting and conclude that the problem is the rubber valve supporting the sum pump. I need an expert opinion to confirm whether or not I am correct and should spend more $$$.

So far I’ve done this.

  1. removed the drain hose from the garbage dispenser and tested the drainage. I did not like the low pressure of the water stream.

  2. Remove the interior parts, removed the grinder, cleaned all parts removed all food pieces I found there. Tested the machine and noticed no improvement.

  3. removed the interior parts again, forced the rinse only and while holding the contact switch in the door I watched the machine fill in and then I forced cancel to drain. It took few cycles before water was gone.

  4. Consulted a part supplier on www and bought a new sum pump. The new pump did not change anything.

  5. I flushed the hoses, removed disconnected the sum pump and attached to the pipes a garden hose. No improvement was noticed.

  6. My wife noticed that when doing those exercises the machine had sometimes less waste water stayed in the machine after a full cycle.

I looked into it again, and when forcing the draining cycle (cancel button), and holding the door open (with pressed contact switch in the door) I noticed a geyser effect, water was pushed up into the machine rather out of it. It would explain low water pressure I saw earlier.

So, if I am right, how do I remove and replace the valve? I guess I need to do it from inside the machine. I noticed there a rectangle notch with a rubber part, but was not sure what it was for. I guess it is the valve mount. Today I found out that the part # Today I found out that the part # is AP3152971.

Does it make sense?

regards, V

3

A follow up question.
Does this type of a dishwasher have a low level water sensor which shuts off the sump pump? Based on my tests there is only a high level water sensor, so the only function controling the pump is a timer. Therefore if waste water is still in the unit and the driaining cycle times out the next step would be the machine filling in more fresh water and mixing it with the waste. This would answer the quesiton why dirty water stays in the machine.

Please kindly davise.

Best regards, V

4

— Begin quote from volant;413716

A follow up question.
Does this type of a dishwasher have a low level water sensor which shuts off the sump pump? Based on my tests there is only a high level water sensor, so the only function controling the pump is a timer. Therefore if waste water is still in the unit and the driaining cycle times out the next step would be the machine filling in more fresh water and mixing it with the waste. This would answer the quesiton why dirty water stays in the machine.

Please kindly davise.

Best regards, V

— End quote

volant - I think I have a similar problem. Did you replace the valve and fix the problem in the end?