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Thread: ATK pmup powers but doesnt run. hellp

  1. #1
    New User
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    ATK pmup powers but doesnt run. hellp

    so my ATK has been the weakest link in my entire setup, the low sensor fails to turn the water off about 50% of the time and the high sensor about the same. thankfull for the float valve...

    anyway, the pmup stopped working this morning, i noticed my return section was about 2" lower than the low sensor, i toggled the pump on and off and no water comes out, the pump registers the on/off because i can hear it start "whining" when on, nothing is spinning though to push water. anyone have ideas on a fix or new pump needed?

    go back to my osmolator?

    thanks

  2. #2
    Frequent Visitor
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    Mar 2015
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    San Jose,CA
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    Is water coming out of the anti siphon break?

    Pull the hose off the pmup and turn it on, is water coming out of the pmup?


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  3. #3
    New User
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    Jul 2018
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    Eastern
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    no, no water movement at all, took apart and reset everything already

  4. #4
    Frequent Contributor SuncrestReef's Avatar
    Join Date
    Feb 2018
    Location
    Beaverton, OR
    Posts
    3,105
    I've had two PMUPs fail like this over the past 6 months. They were only in RO/DI water, so no calcium buildup. I tried taking them apart and soaking in vinegar, but they just never worked again. Neptune Support replaced both of them under warranty.

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