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Thread: Spa draining when pool is on.

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    Join Date
    May 2016
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    Yucaipa, CA
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    Spa draining when pool is on.

    I had a party yesterday and everything was working fine. The pool pump was on all day. My wife turned on the spa and last night, one of the parents came inside and told me the spa had drained. This morning I filled the spa about half way with a bucket and turned on the pump. The spa drained fairly quickly. Any help would be greatly appreciated.
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    20,000 gallon in ground salt system pool with spa coated with pebbletek. The pump is a variable speed pentair and the filter uses DE. When the pump is on there is a waterfall running from the spa to the pool and 2 waterfalls that come out of the side of the pool.

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    Richard320's Avatar
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    Jan 2010
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    San Dimas, CA (LA County)
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    Re: Spa draining when pool is on.

    Typically you have three way valves so you can choose to draw from pool or spa and return to pool or spa or some fraction of each. In spa mode, you should be drawing only from spa and returning only to spa, thus you heat only the spa, not the whole pool. It sounds like the return side valve didn't move to return the water to the spa although it was drawing from it, or it was working fine but when it went back to pool mode, the valve to the spa drain didn't close. So you emptied the spa into the pool.

    If you didn't have automation and electric motors, it would be easy to find and fix. I haven't got a clue about all the electrical stuff for that, but usually there's so way to disengage the electric from the valve and manually turn the levers. If memory serves, it's a matter of pulling up on the handle, but don't quote me on that.

    Your picture doesn't show everything clearly, but I imagine if you crawl around and study the handle positions, you'll be able to figure out which one is in the wrong spot.
    16K freeform gunite with spa; Pentair 4000 DE filter; Century Whisperflow 1 HP; Pentair Minimax heater.
    Troublefree does not mean Maintenancefree. It's like brushing your teeth: You can spend a couple minutes a day and pennies a week or go to the dentist once a year and spend several thousand dollars.
    A pool is like a pet - you have to feed it every day, even the days you don't want to play with it!

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    JoyfulNoise's Avatar
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    May 2015
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    Spa draining when pool is on.

    You'll need to go to the automation panel and switch between POOL mode and SPA mode to see if the three way valves are rotating properly. The valve actuators have toggle switches on them that set their position. You mentioned a party, did any of the kids or adults get back to the equipment pad and mess with anything? All it takes is a flip of the manual switches to mess up the valve automation.
    Matt
    16k IG PebbleTec pool, 650gal spa, spillway and waterfall, 3HP IntelliFlo VS / 1.5HP WhisperFlo, Pentair QuadDE-100 filter, IC40 SWCG, MasterTemp 400k BTU/hr NG heater, KreepyKrauly suction-side cleaner Dolphin S300i robot, EasyTouch controls, city water, K-1001, K-2006 and K-1766 test kits, Mannitol test for borates

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    Yucaipa, CA
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    Re: Spa draining when pool is on.

    Not that I'm aware of. There are 4 valves, 2 of which are electric. One turns when going into spa mode, but the other didn't budge no matter what I did.
    20,000 gallon in ground salt system pool with spa coated with pebbletek. The pump is a variable speed pentair and the filter uses DE. When the pump is on there is a waterfall running from the spa to the pool and 2 waterfalls that come out of the side of the pool.

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    JoyfulNoise's Avatar
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    Re: Spa draining when pool is on.

    What position is the switch in on the actuator that doesn't move?
    Matt
    16k IG PebbleTec pool, 650gal spa, spillway and waterfall, 3HP IntelliFlo VS / 1.5HP WhisperFlo, Pentair QuadDE-100 filter, IC40 SWCG, MasterTemp 400k BTU/hr NG heater, KreepyKrauly suction-side cleaner Dolphin S300i robot, EasyTouch controls, city water, K-1001, K-2006 and K-1766 test kits, Mannitol test for borates

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    Navasota, Tx
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    Re: Spa draining when pool is on.

    just guessing but that bottom valve behind the grey conduit, I would swap the direction on that one opposite what it is. typically they left side is pool, right side spa. looks like its drawing from the spa and pumping into the pool?? maybe swap the top electronic actuator. ensure its in pool mode, maybe the actuators are inop

    brett
    23'x32' Inground Free Form Gunite. 7' Raised spa, Jandy equipment, Aqualink, Stonescape with Abalone shells

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