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Thread: Pressure spike when trying to force all flow from/too hot tub

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    Join Date
    Apr 2014
    Location
    Texas
    Posts
    14

    Pressure spike when trying to force all flow from/too hot tub

    My pool has the hot tub that overflows into the pool. When I turn the jandy valve to pull water only from hot tub no change is seen in pressure. However when I turn the other jandy valve to put all flow into the hot tub only, pressure spikes to high and i have to back it off to make it dump some into the pool. I have noticed that 3 of the 6 jets in the hot tub are not functioning. Could this be the cause? no loeaks or water loss is expierenced. Thanks in advance.

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    mas985's Avatar
    Join Date
    May 2007
    Location
    Pleasanton, CA
    Posts
    11,487

    Re: Pressure spike when trying to force all flow from/too hot tub

    The jet nozzles are probably clogged. The jets nozzles are deep within the spa wall so a socket wrench with a long extension is needed to remove them. Note that the nozzles are not the outer fittings that you can see. Once removed, you can run the pump and flush out any debris that might be stuck behind the nozzles.
    Mark
    Hydraulics 101; Pump Ed 101; Pump/Pool Spreadsheets; Pump Run Time Study; DIY Acid Dosing; DIY Cover Roller
    18'x36' 20k plaster, MaxFlo SP2303VSP, Aqualogic PS8 SWCG, 420 sq-ft Cartridge, Solar, 6 jet spa, 1 HP jet pump, 400k BTU NG Heater

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