I have a very weird setup for my living room, and at first I didn't actually realize what was happening until I started looking into replacing a 3-way switch with a 3-way smart dimmer (Leviton DZ6HD as the main dimmer and DD00R-DLZ as a remote dimmer).
I have two 3-way light switches that control a ceiling fan light. I also have a third switch next to one of the three way switches that controls power to the fan. The fan has a remote, and on the fan remote is a light switch button. I thought that the light switch button on the remote just didn't work, but then I realized something weirder was going on.
The remote only works to turn the fan and off when the single-pole fan switch is on. The two 3-way light switches seem to have no control of the fan.
I drew a diagram to show how each light was wired. After drawing this I realized some cables have cords that go directly to two separate light switches, which also seems odd to me (although I'm not an electrician). I have not taken the wires out of the switch to test which ones are hot or not.
I also took pictures of the backs of the light switches, which I won't embed but I will link to.
Editor note: embedding makes it easier for everyone
When the two 3-way light switches (A and C) are giving power to the ceiling fan light, the light is on and the "toggle light" button on the remote does nothing regardless of what position the ceiling fan switch (B) is in.
When the two 3-way light switches (A and C) are not giving power to the ceiling fan light, and the ceiling fan switch (B) is off, then the light is off and the "toggle light" button on the remote does nothing.
However, when the two 3-way light switches (A and C) are not giving power to the ceiling fan light, but the ceiling fan switch (B) is on, then and only then does the remote actually toggle the ceiling fan light.
So it seems to me that the two 3-way light switches (A and C) are wired directly to the light, while the fan switch (B) is wired to the fan receiver, which is also wired directly to the light.
I haven't looked at the wiring for the fan so I could be wrong, but nothing else really makes sense to me.
So my first question is, if this is right is that safe to have two sources of power go to one single light? Would that not provide too much power to the light?
My second question is, can I just replace the two 3-way switches with a smart 3-way dimmer switch and leave the single pole fan switch the way it is?
Edit to clarify: My goal here is to make the ceiling light be a smart dimmable light by installing a smart dimmer. Since the smart dimmers say specifically that they cannot control a fan, I am trying to replace both of the 3-way switches (A and C) with a 3 way smart dimmer switch (DZ6HD and DD00R).