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Thread: Jandy Lite 2 control question

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    Jandy Lite 2 control question

    I have a Jandy Lite 2 heater which controls my pump. I also have an evacuated tube solar heating system. If I were to lose electrical power for more than 5-10 minutes during the day I would not want my system to come back on until the next morning as running 85F water through the tubes would shatter them if it were a sunny day.

    Is there a way to change the configuration of the Lite 2 controls so that it reverts to the off state if power is lost rather than keeping its state during a power loss?
    Vinyl 18'x36' in-ground 100,000 L, Jandy Aquapure 1400 SWCG, Jandy Lite2 heater, StaRite System3 filter, Evac tube solar heating panels

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    Re: Jandy Lite 2 control question

    I know I'm not smart but how does your heater run your pump?

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    Re: Jandy Lite 2 control question

    The Jandy Lite 2 has a control panel to control the pump. I turn my pump on or off by pushing a button on the heater. The heater also has the timer that controls the daily on/off schedule.

    Here is a link to the manual http://www.google.ca/url?sa=t&rct=j&...0jO4NSYHVQEiug

    Here is what the control panel looks like (the pump button is the last on the right):
    Vinyl 18'x36' in-ground 100,000 L, Jandy Aquapure 1400 SWCG, Jandy Lite2 heater, StaRite System3 filter, Evac tube solar heating panels

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    gtemkin's Avatar
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    Re: Jandy Lite 2 control question

    I don't know if the controller in you're heater has that capability but if it doesn't, you could use a latching relay circuit placed in-line with your pump relay. It would be placed either in-line with the red or the black wire that feed your power relay coil that come off the power circuit board (according to the Jandy schematic). You would also need a button switch to reset the latching relay after a power failure.

    There's a great little video on YouTube about latching relays.

    https://www.youtube.com/watch?v=n7SuHDmuVUk

    Basically, the latching relay would allow your pump relay to supply your pump with current as long as there is power available to your home. If a power interruption occurs, the latching relay will trip off, blocking power to your pump relay, and you would have to manually reset it by pushing a button switch to put your pump control relay back into the circuit.
    21K gal 16' x 40' in-ground pool built 1959, old school with Jacuzzi bronze pump, American Products 24" Sand Filter & Americana Multiport valve, Jandy Lite2 millivolt heater, Coverstar cover, and classic Kreepy Krauly.

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    Re: Jandy Lite 2 control question

    Yes your heater can control the pump if it has the board to do so. Unfortunately there is no way to prevent the pump from coming on when power is restored if you lose power. You would need some sort of external device to do that.
    Paul
    http://www.gastekservices.com A word of caution: When working with gas and electrical you might want to consider a licensed contractor. Consider the value of your life and others around you. If you would like to provide a review of the help I provided, please use the following link to leave a review. gastek - Google Search,

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    Re: Jandy Lite 2 control question

    Looking at the manual I see that there are some external control options. Would I be able to control my Jandy Lite2, in terms of turning the pump on or off an perhaps the heater from Pool-Spa-Off from low power relays, like from a Raspberry Pi or any other type of home automation system?

    This is from the manual:
    7.4.2 Pump Operation
    The LJ controller allows two options for pump
    control. It can allow operation of the pump by an
    external time clock when it is set in the “External Time
    Clock” mode (see Section 7.4.2.1). To operate in the
    “External Time Clock” mode the controller must be
    programmed with the factory default values indicated
    in Table 6.
    The LJ controller can also operate the pump in
    the “Internal Time Clock” mode using it’s own internal
    time clock to turn the pump on and off. This mode
    requires the installation of the optional Jandy relay,
    part number R0658100 (Refer to Figure 16 for wiring
    diagram).
    And then regarding heater control...
    connected to the heater. To connect a remote ON/
    OFF type switch to the heater, remove the wire nut
    from the two red leads of the wire harness that
    connects to the Fireman Switch connection on the
    power circuit board (see Figure 19). Connect the wires
    from the switch to the leads on the wire harness. This
    type of remote control will turn the heater on or off,
    but will not switch between pool and spa settings or
    allow for temperature adjustments. These functions
    are still controlled at the LJ controller on the heater.
    The LJ heater also accommodates the use of a
    more functional remote control. Remote controls that
    provide their own temperature sensor such as the
    Jandy AquaLink RS® remote control systems can be
    wired to the Fireman Switch connection. The LJ
    controller must first be set up to recognize the remote
    mode. The set up consists of setting the 'PROGRAM'
    (pump time clock) 'ON' and 'OFF' times to run for 24
    hours, setting the controller function to 'SPA' and
    setting the spa temperature to 104°F (40°C).
    Vinyl 18'x36' in-ground 100,000 L, Jandy Aquapure 1400 SWCG, Jandy Lite2 heater, StaRite System3 filter, Evac tube solar heating panels

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    gtemkin's Avatar
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    Re: Jandy Lite 2 control question

    You certainly could however that's much more of a project than installing a latching relay and switch to deal with your original interest of power failure protection.
    21K gal 16' x 40' in-ground pool built 1959, old school with Jacuzzi bronze pump, American Products 24" Sand Filter & Americana Multiport valve, Jandy Lite2 millivolt heater, Coverstar cover, and classic Kreepy Krauly.

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    Re: Jandy Lite 2 control question

    Quote Originally Posted by gtemkin View Post
    You certainly could however that's much more of a project than installing a latching relay and switch to deal with your original interest of power failure protection.
    you're right but I am thinking of doing this for more sophisticated control options.
    Vinyl 18'x36' in-ground 100,000 L, Jandy Aquapure 1400 SWCG, Jandy Lite2 heater, StaRite System3 filter, Evac tube solar heating panels

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