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Thread: Timer can turn on but not turn off the filter?

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    Timer can turn on but not turn off the filter?

    The filter timer was set from 10am to 2pm on high and from 7pm to 8pm on low. However, I found that recently, the filter can start on the set time but it can not stop on the set time. What's wrong with it? I just moved in this house and does not have the manual for the filter.

    I am in Texas. It is super hot recently. Is it possible due to some temperature sensor? So, when it is hot, it will keep running?
    14000 gallons, plaster, with spa, cartridge filter, high/low speed, Build in June/July 2009, 1 tablet adds 2.4 CYA
    CYA=30, TA=60, CH=320

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    Isaac-1's Avatar
    Join Date
    May 2010
    SW Louisiana

    Re: Timer can turn on but not turn off the filter?

    What type of timer do you have? Brand Model? If you don't know can you post a photo?
    Indoor 20x40 35,000 gallon vinyl pool with 1.5 HP 2 speed Jandy FloPro pump, Hayward EC75 Perflex DE filter, 11 4x12 Techno-Solis solar panels w/ Aquasolar controller, Aquabot Turbo T Robot Cleaner. Also LMI metering chlorine dispenser pump and HotSpring Jetsetter
    I use and endorse TFtestKits TF-100 from
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    alanpaul's Avatar
    Join Date
    Aug 2010
    South Florida

    Re: Timer can turn on but not turn off the filter?

    Many manuals are also available online, so if you can identify your manufacturer and your model number on the timer, you may be able to locate the manual without too much difficulty. Most companies let you download their manuals to your computer.
    Alan in Wellington, FL - near West Palm Beach
    15,200 gal IG, painted plaster, 1988; 200 SqFt cartridge filter, 2013; 1.5 HP 1-speed pump (uprated), 2005; heat pump, 2005;
    soon to repair (dead) SWG AquaRite T-15 cell, 2005, and replace (dead) suction-side cleaner, 2005.
    Almost everything died this winter 2012-'13, and I know we shouldn't complain... but, Arrgh!

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