Ok, so I feel pretty dumb having to ask this question but here it goes...
I installed two Inovelli Red Series switches today - one dimmer and one of/off. They work great so far and I'm happy with them. I went back later to try changing some settings, as one of the things I would like is for the LED indicator light on them to be green while they are on (default is blue). On the device page, I found this setting and made the change:
I just tried this preference with the stock driver ("Inovelli Z-Wave Smart Scene Dimmer S2"), and it didn't work for me either. My guess is that maybe Hubitat got the wrong parameter number or value in their driver. Tagging @bcopeland since he can probably figure it out, though I think this particular driver pre-dates him.
(Also, I'm about to release a custom driver for this device that I think is more Hubitatty than Inovelli's drivers and less messy but provides events for all scenes/button events on the device instead of maxing out at double taps like Hubitat's stock drivers do. If you're interested in testing, PM me and I can send you a link.)
The issue with any of the above is that the preference in thr Hubitat stock driver doesn't work. A custom driver with custom command (or child device like Inovelli provides) would both work around this problem and provide a way to automate it (unlike a preference), though I don't think that was a requirement for the OP--but can still be useful.
Bryan, if you haven't looked at this yet, my guess is that there was a typo in the manual whoever wrote Hubitat's driver looked at, and that probably made its way into the driver. Parameter 13 for LED color on the dimmer should be two bytes, like it is on the switches, rather than 1, which I think they had printed in the original manual (and maybe still do).
Does it handle the "normal" LED though? A quick read makes it look just like the notification LED, which isn't what the poster wanted. And none of the above will solve the issue of there apparently being a bug in the stock driver preference.
I can confirm this feature does work with the red dimmers on 1.48 FW and using the latest inovelli driver available through HPM.
Using this driver I did find that it I had any value in the custom RGB value, the. The color selection in the previous option would not work. Maybe you can confirm this other value in your case is set to zero.
Yeah, Inovelli's driver works, precednece about which preference it obeys aside. It's the stock Hubitat one that seems to have a problem. My guess is that they obeyed the typo in Inovelli's parameter documentation (Inovelli did it correctly in their actual driver), but we'll see once they review the driver code, I suppose.