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Thread: Need help - air bubble puzzle

  1. Back To Top    #1

    Need help - air bubble puzzle

    There has been a weird issue with my pump. The issue was definitely not there a month ago when I open the pool. I am not sure if anyone has experienced this before.

    When the pump valve is on the skimmer size, there are many small air bubbles coming out of the return line and the pressure fluctuate between 2 and 15 psi.

    When I rotate the pump valve to in between skimmer and main drain, the air bubbles seem to disappeared and the pressure is normal.

    When I put the pump valve on the main drain side, there is no pressure at all no matter how long I wait.

    I am really confused now.

  2. Back To Top    #2

    Re: Need help - air bubble puzzle

    I'm no expert, but sounds like you have a blockage on the man drain side - Does the valve feel like its functioning right?
    Researching pools - future pool owner! (hoping for inground, gunite/concrete, 18'-22' x 38'-42' approx, hot tub)

  3. Back To Top    #3
    Mod Squad JohnT's Avatar
    Join Date
    Apr 2007
    SW Indiana

    Re: Need help - air bubble puzzle

    It sounds like your pump isn't able to pull enough water from the skimmer alone or main drain alone to maintain prime. Is your water level high enough? Any chance you have a clogged skimmer basket or have you vacuumed without the basket in place?
    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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