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Registered
Join Date: Mar 2002
Location: Southern California
Posts: 2,578
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My main pump was doing the same thing a few months ago (Pentair Whisper Flo approximately 20 years old). I did some research and found several videos on YouTube that referred to the possible culprit as the capacitor. I replaced it ($12 on Amazon) and it corrected the problem.
https://www.youtube.com/watch?v=xk3kVK1K7N8
Good luck, David
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99 996 C4
11 Panamera 4S
83 SC Targa converted to a 964 cab (sold)
67 912 (sold)
58 Karmann Ghia choptop (traded for the 912)
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