Question about Maytag 24 in. MDB9150A Built-in Dishwasher

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Maytag MDB9150AWW model not getting wash water, gets rinse water

My Maytag MDB9150AWW model is not getting wash water, but it IS getting rinse water. When I use Auto Clean, Normal or LIght Wash no water enters the machine and then it attempts to wash without water. Instead of hearing the water entering the machine there is complete silence. At some point the dishwasher attempts to wash the dishes even though there is no water in it. At this point I open the door and manually add water using my sink's hose sprayer. For Auto and Normal, this is done twice as I believe there is a pre-wash stage. For Light I only do this once. The water always drains successfully and when the rinse cycle comes along the water enters without a problem and the dishes are rinsed.

Having read some other posts, I don't know if this is a float switch problem that gets ''unstuck'', or if this is an electronic control problem. The water inlet valve works fine for the rinse cycle, as does the float switch. Since the pre-wash (first) wash cycle doesn't ''unstick'' the float switch and I have to add water a second time for the (second) wash cycle, but waqter enters fine for the rinse cycle, I tend to think the float switch is probably ok. Any ideas?

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  • mjdwolski Jul 28, 2010

    Thanks for the help. I am rerunning it now and took a voltage reading at the water inlet valve. Using "Normal" wash cycle, the Pre-Wash Fill cycle worked and registered 120 Volts at the terminals. I watched the float switch and it worked fine. After the drain, the main Wash Fill cycle did not work properly (there was no voltage (0.108V) at the water inlet valve terminals). Rinse cycles worked fine.

    Looks like the Control Panel replacement is my fix. Thanks!



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I think you have thought this through throughly and have narrowed it down pretty good....
The soleniod valve does work or you would not be getting rinse water...
The float is working or the rinse would either not fill at all or overfill...
so the electronic control seems to be the problem and when it should be filling for the wash cycles it is not activating the fill soleniod..
I agree with you that the part I would change is the electronic control...

here is the part...based on the model number you gave...

good luck!!


Posted on Jul 27, 2010

  • mjdwolski Jul 27, 2010

    Thanks for the answer - though that was the answer I was hoping to avoid since it's the expensive repair - $127 instead of less than $10. :-)

  • D. Floyd Kolb
    D. Floyd Kolb Jul 28, 2010


    Wish I could see another way but unfortunately I think you have the exspensive fix...




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