Dishwasher Flowback

Dishwasher Flowback

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Thread: Dishwasher Flowback

  1. #1
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    Default Dishwasher Flowback

    Hello All,

    I've got a Kenmore (Whirlpool) Ultrawash Elite dishwasher. Model: 66577969k703

    After it runs, there is still a small amount of water left in the bottom....

    It has a function specifically to drain out any left of water. When this cycle is engaged, I can open the door and see the pump is pushing all the water out but a few seconds after it turns off, due to the door being open, I can watch the water flow back in.

    I've replaced the drain hose and taken everything apart and there is no obstructions or anything like that.

    I've read a lot of times it is the drain pump.... could this be true if its pumping all the water out except the last few inches?

    Also that it maybe the water level sensor, but again, all the water is being pumped to the drain hose, its just flowing back once the pump turns off.

    and the last thing I've seen it due to the "pressure" I guess that installing a Air Gap could help? This make sense but I question if this is issue because it has been working fine for years without it...

    Here is a link to the same dishwasher I have showing the pump replacement: Dishwasher Repair – Replacing the Drain Pump (Whirlpool Part # WPW10348269) - YouTube


    Any help would be greatly appreciated

  2. #2
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    Hi,

    After it runs, there is still a small amount of water left in the bottom
    Can you see the water? How much?
    Is this a new occurrence?
    Water under the filter and in the cup is normal....even after no more is draining out.

    I can open the door and see the pump is pushing all the water out but a few seconds after it turns off, due to the door being open, I can watch the water flow back in.
    Is this a new occurrence?
    Where exactly does the drain hose go?

    A little bit of water from the drain loop will run back into the d/w due to gravity.



    jeff.
    http://www.applianceaid.com/
    Appliance Repair Aid

  3. #3
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    Quote Originally Posted by jeff1 View Post
    Hi,



    Can you see the water? How much?
    Is this a new occurrence?
    Water under the filter and in the cup is normal....even after no more is draining out.



    Is this a new occurrence?
    Where exactly does the drain hose go?

    A little bit of water from the drain loop will run back into the d/w due to gravity.



    jeff.
    Hi Jeff, Thanks for your reply.

    I can see the water, it pretty much fills the sump where the filter and screen go. its maybe 4 inches. I have read that it is normal to have water there to keep everything sealed and also that it is not normal to have water left over so I'm not sure which is true....We have only lived here for a year but my wife seems to recall there always being a bit of water left there when she was cleaning the filter. The real issue is the water that remains is still very dirty and it stinks and is causing mold in the filter/screen.

    The hose goes to the sink plumbing. Its got a nice high loop, is above the clean out etc.

    If water in the cup is normal, maybe I'm describing the problem wrong - the real issue is perhaps that the water is still dirty even after the full cycle.

    Here is a pic of the hose... The loop is usually much higher. I was lowering it to try to get the water to flow out...


    here is the standing water...
    Attached Thumbnails Attached Thumbnails Dishwasher Flowback-img_20180806_081450-jpg   Dishwasher Flowback-img_20180806_085836-jpg  
    Last edited by steveo316; 09-13-2018 at 07:06 PM.

  4. #4
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    I have read that it is normal to have water there to keep everything sealed and also that it is not normal to have water left over so I'm not sure which is true
    Water must remain in the sump/pump assemblies as the pumps are primed and seals are water cooled.
    Water under the flat filter would be normal, water above the filter would not be.

    The real issue is the water that remains is still very dirty and it stinks and is causing mold in the filter/screen.
    It shouldn't be dirty...the last drain out where all the washing is done by then so this should be the cleanest water from the d/w.

    I see some possible issues with the drain set up.

    Dishwasher Flowback-drainposting-jpg

    jeff.
    http://www.applianceaid.com/
    Appliance Repair Aid

  5. #5
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    There is a trap... I looped the hose around the dishwasher closer to the pump and it is preventing the dirty water from coming back it. Before it was just running along the floor with the only loop being inside the cabinet. Seems to be working... Now just need a longer hose haha.

  6. #6
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    Can you post a picture of the drain behind that area on the left.....so we can see the trap and that.

    Glad things are looking better

    jeff.
    http://www.applianceaid.com/
    Appliance Repair Aid

  7. #7
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    Cool

    Quote Originally Posted by jeff1 View Post
    Can you post a picture of the drain behind that area on the left.....so we can see the trap and that.

    Glad things are looking better

    jeff.
    Hi Jeff,

    Here is a better angle of the trap... sorry for the late reply, Just got back from a much needed vacation last night.
    Attached Thumbnails Attached Thumbnails Dishwasher Flowback-img_180818101831842-1-jpg  
    Last edited by steveo316; 09-13-2018 at 07:07 PM.

  8. #8
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    Thankx.

    Dishwasher Flowback-drainezforum1-jpg

    The line is where the water level will be with the trap in that spot. The d/w drain port is not much higher so we can see how easily it would be to accidentally get water up the drain hose and into the d/w.

    jeff.
    http://www.applianceaid.com/
    Appliance Repair Aid

  9. #9
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    Quote Originally Posted by jeff1 View Post
    Thankx.

    Dishwasher Flowback-drainezforum1-jpg

    The line is where the water level will be with the trap in that spot. The d/w drain port is not much higher so we can see how easily it would be to accidentally get water up the drain hose and into the d/w.

    jeff.
    Makes Sense.... would you recommend moving it to the line between the two sinks then?

  10. #10
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    Seems to be working
    You have it working for now so I would leave it alone.

    If any new plumbing or sink or a new d/w is needed, then I would probably do the update to the drain plumbing at that time.

    jeff.
    http://www.applianceaid.com/
    Appliance Repair Aid

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