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Thread: Hayward Pump not operating on low flow

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    Hayward Pump not operating on low flow

    We have a Hayward pump that we run on high for 4 hours and switch to low flow for an additional 2 hours, but it has recently stopped working on low flow. The Aquarite readout says its operating in low flow mode, but the pump is completely off. Any ideas of what could be wrong or how to remedy?

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    JasonLion's Avatar
    Join Date
    May 2007
    Silver Spring, MD

    Re: Hayward Pump not operating on low flow

    The most likely possibilities are a loose connection in the wiring or a bad speed relay. There are a number of other possibilities. If you can't figure it out quickly, follow the wiring along with a multi-meter and see how far from the supply side of speed relay moving towards the pump you still have power.
    19K gal, vinyl, 1/2 HP WhisperFlo pump, 200 sqft cartridge filter, AutoPilot Digital SWG, Dolphin Dynamic cleaning robot
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