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Thread: PLEASE HELP!!! 1" Flow Sensor Stopped Working after main pump died.

  1. #1
    Frequent Visitor Alex's Avatar
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    PLEASE HELP!!! 1" Flow Sensor Stopped Working after main pump died.

    I installed my FMM displaying flow of my 1" sensor 6 months ago. It was working fine and always displayed flow between 90 to 150 GPM.

    Last week my main pump died and the FMM sent me an alarm since the sensor went down to 0. I replaced the DART but the Flow Sensor never recovered. Always displays 0.
    I took it apart and cleaned it, thinking something got stuck in it. It was very clean. I even used my finger to move the wheel. It was turning fine...
    I removed the FMM module and re-installed it. Nothing.
    I moved the flow sensor from position 1 to position 4. Still nothing...

    I don't have any other ideas. Can you please think of anything?
    Is this a known problem?

    Thank you in advance for all your suggestions.

  2. #2
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    PLEASE HELP!!! 1" Flow Sensor Stopped Working after main pump died.

    Edit: NVM missed the part where you said you had physically cleaned it.





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  3. #3
    Frequent Contributor zombie's Avatar
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    Contact support.

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  4. #4
    Frequent Visitor Alex's Avatar
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    I contacted support. They were very helpful. After testing the flow sensor and determining that it was communicating properly with the APEX, I once more opened it up and blew hard in the senor tunnel to make sure it was all clear. After a few strong blows the wheel started spinning with a whistle...
    After that I plugged it back in and started working...
    So I'm guessing the wheel was being impeded by debris and it was not easy to see...

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