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Thread: Capacitor continuously fails

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    Capacitor continuously fails

    I have a two speed Hayward pump that has the AO Smith motor on it. Have replaced the capacitor and the new one isn't working. Didn't work right away. i have replaced one before and it worked for about two weeks before it failed again.

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    Agent99's Avatar
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    Re: Capacitor continuously fails

    Time for a different brand of capacitor, I think.

    Or make darn sure you are getting the correct size one for your motor.
    ----Chris----
    25k IG/Spa Figure 8, 18x36, Pebble Sheen Blue Granite, Sta-Rite S8M150 Cartridge Filter, Pentair 460805 400k BTU Heater & 011018 IntelliFlo VarSpd
    Liquidator, Fafco Solar Heat, Polaris PB460 Booster Pump w/280 cleaner, Katchaleaf Cover, TF100 Test Kit, FAKE MAIN DRAIN

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    Mod Squad Bama Rambler's Avatar
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    Re: Capacitor continuously fails

    Do you have a centrifugal switch on the motor? If so, it could be that the switch isn't making contact and that's what is keeping the motor from starting.
    Dave J. TFP Moderator
    24' x 52" Round AGP. 2hp/¼hp SPL Power-Flo 2-speed pump. 200sqft Waterway Cartridge Filter. 45MHP2(3GPD) Stenner Peristaltic Pump
    Pool School ----- Pool Math ----- TF-Test Kit

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    Re: Capacitor continuously fails

    Quote Originally Posted by Agent99 View Post
    Time for a different brand of capacitor, I think.

    Or make darn sure you are getting the correct size one for your motor.
    I got a direct replacement for the original.

    - - - Updated - - -

    I dont know if i have a centrifugal switch on the motor. It does hum and then not start when switch turned on. Then it goes into the protect mode. I replaced the capacitor the first time and good for two weeks then I went and bought new one. Didnt work at all. Pump hummed and would nt start. It starts manually with screwdriver at base. Spins free with no apparent binding.

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    Mod Squad JohnT's Avatar
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    Re: Capacitor continuously fails

    Maybe try a different source for your caps. They age just sitting on the shelf, so if your dealer has old stock it could be the source of the problem.
    TFP Moderator
    20K Gallon 20X36 Vinyl Inground
    Hayward S244T Sand Filter with 1HP Whisperflo Pump. Liquidator C-201 and Solar Heat

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    jojoman's Avatar
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    Re: Capacitor continuously fails

    Try to get a capacitor that is made in Japan, not China. There's a difference. If not that, then it might be an issue with the motor itself.
    12K gal, custom flipped kidney bean with spillover spa. All Pentair equipment, Whisperflo 1 1/2 HP, 400K BTU heater, Intellichlor IC 40 SWG, CCP-320 Cartridge filters, Kreepy Krauly pool cleaner with bootster pump, QuartzScapes in Aruba Sky blue, LED lights and travertine tiles for decking and stones on rear edge for landscaping. TF-100 test kit w/ SpeedStir

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    Re: Capacitor continuously fails

    Or,maybe the motor has a short in the winding, a loose wire on the back plate or... If the motor was reassembled, a wire is pinched somewhere.

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    Re: Capacitor continuously fails

    What model of pump do you have? I may have an answer.
    Hayward Pool Tech
    80+ Years of Technologically Advanced Pool Product Manufacturing
    poolside@haywardnet.com

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    Re: Capacitor continuously fails

    Sounds like a sticky centrifugal switch to me.
    Bob - Palm Beach by San Juan Pools. approx 5000 gals., Pentair 320 cartridge filter (all new guts installed by me), Goldline SWG, 'New to me' Kreepy Krauly Sand Shark, Intermec 104 Timer Test kit: TF-100 w/Speed Stir

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