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Thread: Heat Pump Question re Autoset Option

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    Join Date
    Jul 2011
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    Monmouth County, New Jersey
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    Heat Pump Question re Autoset Option

    The literature that came with our Pentair Heat Pump says,"UltraTemp provides an AutoSet feature as standard. It monitors water temperature and turns the pump on and off as needed, overriding the time clock to maintain desired temperature. It's the ultimate in convenient, hands free comfort control."

    The manual says, "Auto Set on/off Screen - this scree is only shown if the auto set mode is enabled during the factory setup. Allows the operator to turn the autoSet ode On and Off. AutoSet mode periodically energizes a filter pump contactor to start a remote filter pump which allows the heat pump to heat or cool the water as necessary."

    Our Heat Pump does show this option but I don't understand how the heat pump can control the water pump and make it turn on when the mechanical timer has it shut off. Is it possible?

    Or is this something that would only work with some special set up beyond the regular mechanical timer we have.

    I added all our info to my signature because as we start this season I think I am going to have more than a few questions. So many questions have already been answered by reading old posts but some are very specfic to our set up.

    Thanks in advance for any help.
    Built in October 2011, 16 x 26 x 20 L shaped vinyl IG steel wall pool, Hayward DE pro grid verticle filter 4800 pool, Hayward two speed superpump, 120,000 BTU Pentair Ultra Temp Heat Pump, Aqua Rite Salt system, 8' wide walk out steps, 2 skimmers, 4 returns, 2 main drains, 500 watt underwater light, intermatic mechanical timer

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    TFP Guide

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    Re: Heat Pump Question re Autoset Option

    Check page 35 on this link http://www.pentairpool.com/pdfs/ThermalFloOM.pdf It has the wiring schematic to set this up. Basicaly it is a parallel wiring system that will bypass the timer and turn the pump on. It is a fairly simple wiring setup if you are familiar with reading schematics.
    Unknown make 18' above ground (bought used in 1999) Sparco sand filter. Hayward 100,000 BTu heater. 2 speed pump

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    Re: Heat Pump Question re Autoset Option

    Thanks for the information. Certainly more than we would be able to do at this point but it did point me in the right direction. I will go look at the timer hookup and see what it looks like as far as wiring.

    I wonder what would happen if I set the heat pump to the auto mode and let things run. If it were not hooked up to run the autoset do you think it would just not turn on after the four hours. So it just wouldn't be able to complete the turn on, check the temp, and run if neccessary schedule and would just do nothing.

    My main concern is not damaging the unit. I don't want to fool with it and cause a problem.

    Thanks so much for taking time to explain.
    Built in October 2011, 16 x 26 x 20 L shaped vinyl IG steel wall pool, Hayward DE pro grid verticle filter 4800 pool, Hayward two speed superpump, 120,000 BTU Pentair Ultra Temp Heat Pump, Aqua Rite Salt system, 8' wide walk out steps, 2 skimmers, 4 returns, 2 main drains, 500 watt underwater light, intermatic mechanical timer

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    Join Date
    Jul 2011
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    Monmouth County, New Jersey
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    81

    Re: Heat Pump Question re Autoset Option

    I looked in the timer box and you can't see how things are wired. You just see breakers for the different things.
    Built in October 2011, 16 x 26 x 20 L shaped vinyl IG steel wall pool, Hayward DE pro grid verticle filter 4800 pool, Hayward two speed superpump, 120,000 BTU Pentair Ultra Temp Heat Pump, Aqua Rite Salt system, 8' wide walk out steps, 2 skimmers, 4 returns, 2 main drains, 500 watt underwater light, intermatic mechanical timer

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    JasonLion's Avatar
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    Re: Heat Pump Question re Autoset Option

    What kind of timer do you have? The wiring for the timer is generally directly below the timer display/wheel. They are often covered by either a plastic shield or a metal cover plate. When the timer is directly installed in a sub-panel the cover plate is often the same cover plate the covers the wiring for the breakers.
    19K gal, vinyl, 1/2 HP WhisperFlo pump, 200 sqft cartridge filter, AutoPilot Digital SWG, Dolphin Dynamic cleaning robot
    Creator of PoolMath and Pool Calculator. Other handy links: Support this site, TF Test Kits, Pool School

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