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Thread: Pool pressure shows 0 psi on pump "low speed"

  1. Back To Top    #1

    Join Date
    Jul 2014
    Cleveland, OH

    Pool pressure shows 0 psi on pump "low speed"


    I just realized today that the pool pump (that came with my new house) is a two speed (just turn the switch the other way). However, when I turned the switch to the low speed I get 0 psi on the filter (normally 14 psi on high speed). This is a 75 sqft cartridge system, some 14 year old Jacuzzi pump/filter combo system. The pool is an above ground ~14,000 gal. I mean, on low it feels like it is still working though, just reading no pressure.

    What does this mean? Or is this normal?

    Thanks for the help

  2. Back To Top    #2
    Richard320's Avatar
    Join Date
    Jan 2010
    San Dimas, CA (LA County)

    Re: Pool pressure shows 0 psi on pump "low speed"

    Pretty much normal. You see movement in the skimmer and flow from the returns, right?

    You might also try the search box for something like zero pressure variable speed.
    16K freeform gunite with spa; Pentair 4000 DE filter; Century Whisperflow 1 HP; Pentair Minimax heater.
    Troublefree does not mean Maintenancefree. It's like brushing your teeth: You can spend a couple minutes a day and pennies a week or go to the dentist once a year and spend several thousand dollars.
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  3. Back To Top    #3
    svenpup's Avatar
    Join Date
    Nov 2009
    Sacramento, CA

    Re: Pool pressure shows 0 psi on pump "low speed"

    Reading zero pressure on low speed is totally normal.
    TFP Method Advanced Intermediate
    • 17,500 gallons - In Ground - Plaster - Hayward Swimclear 3020 Cartridge Filter - Sta-Rite Max-E-Glas Main Pump upgraded with A.O. Smith B2980 E-Plus New Centurion Two-Speed Motor - Polaris 280 Cleaner with Polaris PB4-60 Booster Pump - TightWatt2 Timer - Taylor K-2006 Test Kit - Pool Pilot Digital Nano SWCG

    Helpful Links: Pool School, BBB for Beginners, How to Shock ('s a process not a product), Chlorine/CYA Chart, Jason's Pool Calculator

  4. Back To Top    #4
    bobodaclown's Avatar
    Join Date
    Apr 2011
    Lakeland, FL

    Re: Pool pressure shows 0 psi on pump "low speed"

    Yeap, Normal. Enjoy the savings!
    17K Kidney Shaped Pool Concrete (Diamond Bright) Pool, 3/4 hp 2 speed 115V Sta-rite Duraglas PEA5D-180L/P2R5D-181L (Impeller C105-92PS Diffuser C1-216P), 1.5 piping, Pentair CC100 Filter , Heat Siphon 100K BTU Heat Pump Pool Heater, Flow meter Blue White Flowmeter Model No. F-30150P, Hayward Astrolight SP0581N, SWCG CalimarTitanium Edition TE45 , Lakeland Florida

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