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    Pentair OptiFlow Pump noise, squealing. Too cold? Looking for advice on repair/replacement

    Update: The pump got a little sun this morning. Now the high pitched whining is gone. I'm back to the loud bubbling/sloshing noise again that was there yesterday. Maybe nothing is wrong at all? Cold temps again perhaps letting some air in? This bubbling/grinding/sloshing noise is...
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    Pentair OptiFlow Pump noise, squealing. Too cold? Looking for advice on repair/replacement

    Hello, I'm on year 4 of my first above ground pool experience. This is my first time running into pump issues. Wondering if anyone can give advice on the noises I'm encountering, and if I should start to look into a replacement. I opened early this year prepping for a Raypak NG heater...