Question about Pentair 1hp Whisperflo Pool Pump In - Ground

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Pool pump starts & stops on its own outside of programmed run

I have a Pentair Whisperflo 1 1/2 hp pool pump with Jandy Aqua Link Controller. When the program calls for the pump to be off, the pump will sporadically come on for a split second and then shut off. This happens randomly.(The pump may kick on and off 1 time in an hour, or it may do this 3 times in 15 minutes, or not at all for a day.) The relay has been changed, the outside board, as well as the board in the controller inside the house have all been changed out, and still the pump kicks on and off. Could the "new" relay be defective? Will this starting and stopping of the pump harm the pump? Could this be a wiring problem? Please help! Thanks

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There are several potential problems:

  • freeze protection circuit causing pump to start - could be a bad outside air temperature sensor.
  • It is possible the new relay is bad.
  • There could be a short in the control wires to the relay
  • old programming shadow stuck in memory (not likely since you changed the boards)
Yes, the starting and stopping can harm your pump.

Posted on Aug 11, 2009

Testimonial: "The problem has been fixed----it was a bad outside air temperature sensor. Thanks for your help."


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