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Thread: 3-way switch on if both are on or off but otherwise works as expected

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    3-way switch on if both are on or off but otherwise works as expected

    Basically my 3-way is working like an xnor gate when I'd like it to be a xor gate. If both switches are on or off the light is on. If they are opposite the lights are off. Other than flipping a switch upside down, can this be fixed? It's a minor annoyance for some lighting around my pool deck and plugs.

    Thanks!
    77000L (20500 gallon) vinyl in-ground chlorine double roman pool, 35'x17', Hayward SP3200VSP, Jandy Lite2 LJ400N heater, Hayward S244TC filter, *deleted* Hayward chlorinator, Taylor CK1004FAS+CYA

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    JoyfulNoise's Avatar
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    Re: 3-way switch on if both are on or off but otherwise works as expected

    Are these pool lights or landscape lights?

    Sounds like the hot wire is not properly wired into the switches. Do the switches have independent hot leads or is one switch sending a runner out to the other?

    A picture of the wiring is worth a thousand words...


    Matt
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    Mod Squad jblizzle's Avatar
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    Re: 3-way switch on if both are on or off but otherwise works as expected

    Should be as simple as swapping some wires on the back. You might want to check some wiring diagrams.
    Jason, TFP Moderator
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    Re: 3-way switch on if both are on or off but otherwise works as expected

    Wish I was more technical!

    These are just landscape lights. As far as I can tell it's all correct in that each switch operates independently of the other's position (which is all I've been able to find for common wiring problems). The wiring is about 15 years old and I only noticed this after changing the switches from toggle to decora, but it could have been there from the start. I know if I turn a switch upside down it "works to my liking" but I thought there should be another way.

    If I had accidentally swapped a traveller for the common or load, could this have happened?

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    Mod Squad jblizzle's Avatar
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    Re: 3-way switch on if both are on or off but otherwise works as expected

    You know, 3 way switches I don't think are directional. Just flip one over and call it a day
    Jason, TFP Moderator
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    Re: 3-way switch on if both are on or off but otherwise works as expected

    To answer the other question I'll have to pull the switches and check for hot and travellers. Without doing that I'd guess that only one has the hot and the other has the load.

    - - - Updated - - -

    That's kind of the answer I was hoping for 😎

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    Mod Squad Jimrahbe's Avatar
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    Re: 3-way switch on if both are on or off but otherwise works as expected

    Ben,

    I take it you want the light to light only when either switch is moved up and you want the light to turn off if either switch is moved down.

    Assuming your light have always worked as you describe above, you can fix it my taking either switch and swapping the two "traveler" wires. (Leave the Common wire and the Neutral wire, as is..)

    Thanks for posting,

    Jim R.
    Finished in 2015 - 17K Gal, IG, 20' x 25' Almost Rectangular Pool, Pebble finish, three rockport water falls. Pentair Equipment: EasyTouch 4, IC40 SWG, 3 HP VS Pump, CCP520 Cartridge Filter.
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    Re: 3-way switch on if both are on or off but otherwise works as expected

    Thanks for the suggestion. Will take a look tomorrow. I appreciate the help from all!

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    Re: 3-way switch on if both are on or off but otherwise works as expected

    Quote Originally Posted by Jimrahbe View Post
    Ben,

    I take it you want the light to light only when either switch is moved up and you want the light to turn off if either switch is moved down.

    Assuming your light have always worked as you describe above, you can fix it my taking either switch and swapping the two "traveler" wires. (Leave the Common wire and the Neutral wire, as is..)

    Thanks for posting,

    Jim R.
    Worked like a charm! Thanks Jim!!

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    Mod Squad Jimrahbe's Avatar
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    Re: 3-way switch on if both are on or off but otherwise works as expected

    Ben,

    Anytime, thanks for the feedback, as it might help others..

    Jim R.
    Finished in 2015 - 17K Gal, IG, 20' x 25' Almost Rectangular Pool, Pebble finish, three rockport water falls. Pentair Equipment: EasyTouch 4, IC40 SWG, 3 HP VS Pump, CCP520 Cartridge Filter.
    TF100 with SpeedStir and SampleSizer, ColorQ Pro 7, Dolphin Premier Robot Cleaner, added Screen Logic 2, added small 3 person Caldera Spa.

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