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Thread: bad capacitor!?!?!?

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    bad capacitor!?!?!?

    i have a hayward tristar 2hp pump. the pump will try and come on but only hum then shut off. i can make the pump turn by manualy turning the input shaft and turns on and runs fine. i found a capacitor that is bad will that cause this problem? if not where should i start looking? any input will help thank you
    14,800 Gal / AGP Portable / Vinyl / Hayward Power-Flo Pro LX / Sand Filter / Installed 7/2012

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

    Re: bad capacitor!?!?!?

    If the start capacitor is bad it will prevent the motor from starting up on it's own. The start capacitor gives it an extra kick to help it get going just at first. A problem with the start switch can also cause the same symptom.
    19K gal, vinyl, 1/2 HP WhisperFlo pump, 200 sqft cartridge filter, AutoPilot Digital SWG, Dolphin Dynamic cleaning robot
    Creator of PoolMath and Pool Calculator. Other handy links: Support this site, TF Test Kits, Pool School

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    Re: bad capacitor!?!?!?

    Thank you, I do think that the capacitor is bad. We can manually start the pump but then it overheats and shuts off. What can cause this?
    14,800 Gal / AGP Portable / Vinyl / Hayward Power-Flo Pro LX / Sand Filter / Installed 7/2012

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    In the Industry
    Qwaxalot's Avatar
    Join Date
    Jun 2012

    Re: bad capacitor!?!?!?

    Try replacing the capacitor!

    From what you've said, it's shorted (rare but not unheard of).
    In the industry, CSP (Certified Service Professional) by the NSPI and it's successor the APSP. My company services over 600 pools every year. I think the practices regularly espoused on this forum (especially the BBB method) are outstanding; however my comments will be often oriented towards the goal of getting it done, and getting it done right now!

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    midtngal's Avatar
    Join Date
    Oct 2007
    Nashville, TN

    Re: bad capacitor!?!?!?

    I'm gonna jump in here with my 2 cents worth since unfortunately, I am "Capacitor Queen"!! I have had to replace at least 5 of them! I just don't even count any more. The guys at the machine supply house that I get them just go get one as soon as I walk in the door! This scenario you describe is exactly what would happen to me when mine would go bad. You should find a machine supply warehouse in your area to get one. They're only about $10-$15 through them whereas they will run $20-$30 online. Couldn't hurt to get 2 and have one on hand in case it does it again over a weekend or right in the middle of a pool party!

    Back to lurking now....
    10,700 gal IG vinyl
    Pentair Triton II TR50 sand filter
    Pentair Booster Pump
    Letro Platinum pressure side cleaner
    Emerson 1HP pump
    Bioguard Mineral Springs SWG
    2 skimmers

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