Question about Maytag MDB7100AWB Dishwasher

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Brown deposit with shiny specks on floor of dishwasher after cycl

I noticed a funny taste to the cups a couple days ago...last night I noticed a brown powdery substance with shiny specks in it on the left side of the dishwasher floor after the cycle had just run. It came off onto my finger when I touched it. It was dry/powdery, not greasy and had metallic looking flecks that I couldn't feel when I rubbed my fingers together. It was by the float cap. Any ideas?

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  • marg715 Feb 18, 2009

    It drains into the undersink plumbing. The brown is more a sludge and NOT rust. We've had the same set-up for 3 different dishwashers for 30 years! Our water is VERY soft.

  • Jim London
    Jim London May 11, 2010

    Hi, where does this unit drain?

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Hi, Nobody wants to give this kind of news but what you are describing is called effluent. It comes from the inside of drainage pipes. That is why I wanted to know where it drained, but specifically, so I could help you identify where the problem might be. This problem occurs when the drainage is too slow for the machine. You need to check all of your undersink plumbing, garbage disposal if you have one, at the very least pull the sanitary trap and clean it out. Once you have cleaned out what is slowing down your drainage, run the machine and check to make sure you have no residue as effluent is not sanitary. Good Luck to you!

Posted on Feb 18, 2009

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Rusty pipes pumping in rust from main

Posted on Feb 17, 2009

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