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Thread: Pentair Pump low speed not starting

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    Join Date
    Apr 2016
    Location
    kinston nc
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    2

    Pentair Pump low speed not starting

    I have a Pentair Superflo dual speed pump. The pump runs fine in high speed. It runs fine in low speed. It will start in high speed. When I try to start it in low speed, it just hums. I have replaced the capacitor on the top of the pump with a new one and I'm still having the same problem. Anybody have any advice. Is there a second capacitor inside of the motor? Help!

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    mas985's Avatar
    Join Date
    May 2007
    Location
    Pleasanton, CA
    Posts
    11,473

    Re: Pentair Pump low speed not starting

    Welcome to the forum!

    My guess would be corroded contacts on the centrifugal switch. How long have you had the pump?
    Mark
    Hydraulics 101; Pump Ed 101; Pump/Pool Spreadsheets; Pump Run Time Study; DIY Acid Dosing; DIY Cover Roller
    18'x36' 20k plaster, MaxFlo SP2303VSP, Aqualogic PS8 SWCG, 420 sq-ft Cartridge, Solar, 6 jet spa, 1 HP jet pump, 400k BTU NG Heater

  3. Back To Top    #3

    Join Date
    Apr 2016
    Location
    kinston nc
    Posts
    2

    Re: Pentair Pump low speed not starting

    Im not sure how old it is. I bought the house a month ago. It was working fine and started acting up a couple of weeks ago.

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