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Thread: Dishwasher filling with dirty water

  1. #1

    Dishwasher filling with dirty water

    Model Number: GSD2100NWW
    Brand: GE
    Age: 6-10 years

    Our dishwasher and garbage disposal is working fine. There is no "Air Gap" in our installation. The dishwasher's drain pipe is also looped through a higher point.

    In the night before going to bed we run the dishwasher and it drains all the water. The sink will be clean and we will not be running water from the sink faucet.

    In the morning dirty water will be filled in the dishwasher. Somedays if I haven't opened or run the dishwasher until noon, the dirty water fills up inside the dishwasher and comes out to the floor. Then when I realize and run the dishwasher, it will drain.

    Not sure how the dishwasher is getting filled with dirty water and where from? Our unit is a townhome and behind our unit there are two (1st floor and 2nd floor) one-level condos and all these units' drain lines may be connected to a common main drain line. Will there be any small clogs in those drain lines pushing water into our dishwasher?

    Please let me know. Thanks!

  2. #2
    Admin/Technician Doc Ryan's Avatar
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    Does the drain hose from your dishwasher loop up and touch the top of the bottom side of the countertop?
    Ryan

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  3. #3
    Yes, the drain hose from the dishwasher loop up and touch the top of the bottom side of the counter top.

  4. #4
    Admin/Technician Doc Ryan's Avatar
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    It sounds to me like it is probably the plumbing backing up into the dishwasher then. Usually if water is backing up into the dishwasher the water has to be higher than the loop in the drain hose for it to back up into the dishwasher.
    Ryan

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  5. #5
    Thank you! As you mentioned, if the water has to be higher than the loop in the drain hose for it to back up into the dishwasher, will it be from the common drain line to which all units (Condos upstairs and behind) sends their kitchen dirty water?

    Thanks!

  6. #6
    Admin/Technician Doc Ryan's Avatar
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    Quote Originally Posted by wrangler View Post
    Thank you! As you mentioned, if the water has to be higher than the loop in the drain hose for it to back up into the dishwasher, will it be from the common drain line to which all units (Condos upstairs and behind) sends their kitchen dirty water?

    Thanks!
    Yes most likely it is coming from the 2nd floor units. I would recommend to talk to a plumber about the issue.
    Ryan

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