I have a 3 gang box with 3 switches. One for the can ceiling lights, one for the ceiling fan lights, and one for the ceiling fan itself. This is my attempt at the original diagram:
It looks like there are two hot lines coming in. One (black) is daisy chained across all three switches to provide power. The second hot line (black) was connected to the fan’s light switch to the line insert on the back of the switch.
I connected a GE Smart Dimmer to the can lights successfully, and the old switches for the fan still worked. The neutral for the dimmer came from the neutral bundle, ground was connected, the line(hot) came from the daisy chain, and load(lights) to load on the smart switch.
I bought another GE smart dimmer and GE smart fan control to add to that box to control the ceiling fan. I checked the wires and figured out that the red coming from the fan controlled the lights, the black going to the other switch controlled the fan, so wiring up the two new switches seemed simple enough. I daisy chained the neutrals between all switches to save some space but bundled the first hot under a wire nut so I could go out to each LINE on the switches separately. For the second hot wire, I connected it to the LINE on the new GE dimmer, seemingly the same as the old switch was.
The dimmer for the can ceiling lights works great - still dims the lights and switches them on/off. The fan control works and controls the speed of the fan. The light switch for the fan, however, does not dim. It does switch the light on/off, but won’t dim. Also, when I turn off the ceiling lights, the fan light flickers a couple times as the ceiling lights dim off.
My initial thoughts is that it has to do with how the hot was daisy chained across all three switches. Could I separate everything to get the ceiling lights on its own circuit and the fan on its own circuit? If so, how?