I've installed one of these smart switches before, but it was on a single pole switch and now a 3 way. The smart switch on the other hand works great, unless the old switch is flipped up, then it doesn't work at all. My smart switch makes a clicking noise when you turn it off and on, so when using the old switch I can hear the smart switch click when I flip the switch up almost like it's controlling the power flow to the smart switch. for starters, if the light is off, the old switch has to be flipped up, then back down, then up again, then back down before the light comes on. I figured i would just replace one of those switches with a new smart switch and the other one I would leave as a normal switch.Īfter installation though, I've run into some weird issues with the two switches. I have one light switch at the end of a hallway, and another switch at the other end. The processor may also send signals back to the remote to set indication LEDs on the remote on or off of course, this functionality depends on which remote you are using.I just installed a new 3 way "Smart" switch (the type used in home automation where you can control lights using your smartphone and various apps.), which allows you to control your lights automatically with your smart phone via the Wink hub. Once master switch's processor knows what input the remote switch received, it can then adjust the light accordingly using its own control means, whether it be a relay for a switch or a solid-state TRIAC for a dimmer. The remote sends signals to the master over the red/yellow wire that tell the master "I got pushed" (or what button was pushed on the remote for more complicated remotes), and these are interpreted by the internal processor in the master switch to determine what happened at the remote switch location. (It may be pulled to a DC voltage of some sort, but does not supply any significant amount of power on its own, as the matching DD0SR-DL remote requires an always-hot in order to power its internal circuitry and LED indicators.) No, the wifi being down won't break your smart switchĪs a result of this approach, the remote switches in your multi-way switch complex will still operate when the master switch is not connected to a wireless network. I would not expect the Red/Yellow wire to be a 120VAC always hot here instead, it's some sort of Leviton-specific control signal between the master and the remotes. The Red/Yellow wire is a comms wire in this case How would this allow the lights to be controlled by both switches? The red wire from the main switch (on right side) is directly connected with the black wire of the load.Is the wire in the diagram which connects YL/RD always hot?.Can 3-way smart switches be operated if Wi-Fi is down - just like manual 3 way switches? If yes, how does current flow in the 4 different states of both switches (on/on, off/off, on/off and off/on). Do smart switches have internal logic circuits?.I am basically trying to understand where smartness comes from. I understand how current flows.īut when it comes to smart 3 way switches, I am trying to understand how communication happens between both switches and how current flows through traveler wires. Here is the screenshot of a Leviton 3 way smart switch (primary and secondary remote switch) wiring diagram.įor non-smart 3 way switch wiring, it is just mechanical connections in the switch which closes and opens path when we turn on and off switch manually.
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