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Thread: Polaris 3900 not moving or moving really slow

  1. Back To Top    #1

    Join Date
    Aug 2012
    Atlanta, GA (Dunwoody)

    Polaris 3900 not moving or moving really slow

    3900 cleaner that was a few months old not moving, plenty of water getting to and coming out the tail end.
    I had this problem and fixed it after a week of trying different things...I could not find any reference to this issue on the internet. The issue ended up being debris in the small jet that shoots water on the paddle wheel to make the unit move. It was clogged and after i got it moving, one of the water jets got clogged causing it to run sideways and spin. We have a lot of leaves in our backyard so this time of year we get a lot of them in the pool. This created a major headache for me until I tracked it down...hope this helps other...real easy to fix, three screes on bottom take the cover off, then three more to take the water flow section off..The back silver grill comes off with this part.
    17500 pool/spa iAqualink Rev R, Pentair VSF, Pentair DE Filter, Waterfall, 3900 Polaris Cleaner, Goldline Saltwater Gen. w/t15, Rayvac 40,000 Gas heater, Taylor K-2006 Test Kit, Taylor Saltwater Test Kit

  2. Back To Top    #2

    In the Industry
    Pool Clown's Avatar
    Join Date
    Sep 2008
    Silicon Valley, CA

    Re: Polaris 3900 not moving or moving really slow

    You shouldn't be getting debris in the unit. The unit operates, or should operate with water directly from the filter, and there should also be a screen near the wall fitting on the feed hose to catch any debris that get past the filter. Is the filter running when the Polaris booster pump runs?
    Factory Warranty Station for:
    Jandy/Zodiac, Pentair, Sta-Rite, Raypak, Polaris,
    and Paramount pool cleaning systems.

  3. Back To Top    #3

    In the Industry
    malcolmb5325's Avatar
    Join Date
    Sep 2009
    Sydney, Australia

    Re: Polaris 3900 not moving or moving really slow

    the little screen filter near the wall fitting sometimes blows out at the end resulting in debris continuing into the cleaner.
    16,000lts Fibreglass, Magna Mineral Pool Water
    Jandy CV340 Cartridge filter, Zodiac TRi SWC, Z4 iAqualink, Jandy Laminar Jets, Solar Heating, Spa Jets with Jandy 1.5hp Epump operating everything.

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