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Thread: Spa draining during cycle

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    Spa draining during cycle

    When my spa cycle comes on, the compool runs it for about an hour, the spa drains completely and starts sucking air, as there is a very low flow of water coming in to the spa. For this cycle the valves are set to drain from spa and return to spa. Does this mean I have a blockage on the spa return?

    Thanks! Again!
    25k I G plaster pool w/spa. 2.2HP Century Centurion switchless motor. COMPOOL lx3800. Pentair FNS Plus DE FILTER 60sq/ft.
    Houston, TX - direct sunlight 8 hours a day.

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    Mod Squad Bama Rambler's Avatar
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    Re: Spa draining during cycle

    It could mean that you have a leaking pool return valve when it closes to divert to the spa. That way you'd be sucking all the water from the spa and returning part of it to the pool so the spa would eventually empty. Depending on how much it's leaking would determine how fast the spa drained.
    Dave J. TFP Moderator
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    Mod Squad jblizzle's Avatar
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    Re: Spa draining during cycle

    Are you sure that both the suction and return valves are completely turning for spa mode? Maybe there is a problem with the return valve actuator.
    Jason, TFP Moderator
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    Re: Spa draining during cycle

    Great. I checked the return valve and found that the plastic between the actual divider and the handle had split completely in two, so I guess it wasn't turning completely. Thanks guys! Back to the store
    25k I G plaster pool w/spa. 2.2HP Century Centurion switchless motor. COMPOOL lx3800. Pentair FNS Plus DE FILTER 60sq/ft.
    Houston, TX - direct sunlight 8 hours a day.

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