I bought a few Caseta Dimmers to replace some Insteon and Z-Wave ones that I have in my home. The Insteon's and Z-Wave all use a neutral as well. When I installed the Casetas to replace them, all my existing LED bulbs would flash on and off over and over. A couple years ago I wanted to replace all our halogens with LEDs so bought several models of dimmable LEDs, some Philips, some IKEA, all stating dimmable. They all were bad, would flicker, or maybe do 100%, 80% and then off or whatever, or they would buzz, so mostly gave up on trying to dim anything. I was told that Caseta is picky about brand, so did research and found on Amazon the Philips LED bulbs the model 457648 where they change colour temperature as they get dimmer which have mostly perfect reviews. I bought them and put them all over the house and just love them, especially in bathrooms at night setting them to 35% or so as they work perfectly. In all locations where I have Insteon or Z-Wave and these bulbs they work just like halogen, no flickering at any brightness level at all and literally work at any brightness level just like halogen.
I set the favourite button to set a few of the dimmers to 20% brightness. For the first day this seemed to work fine, but I started noticing periodically that sometimes they would flicker. Not really bad, just subtle almost like a candlelight or something flickering just enough to be annoying. If I tap up or down on the brightness and change it to say 23% or so, the flickering would stop. If I turn them off and press favourite again, most times they would be fine. So it's just maybe 1 in 5 times they flicker. I ended up removing them from my first floor and going back to Insteon and then put them in my basement where there's no neutrals (my Dad wired my basement even though my house is 8 years old, so I think he's still on 1980s wiring standards or something!) Anyway I noticed I have the same issue, it's just when in the lower range like 15-35% or so. Tapping raise a few times then lower would fix the issue. I was told on another forum it was most likely due to not using a neutral that I'm getting this issue, as well as it might be an issue with these temperature changing bulbs.
I read about low and high level trim but not sure if that does anything. If I set the dimmer to literally 2% it actually dims that low, they look like they are just glowing not really creating any light, but they do still work. So when it says to do the low level trim adjustment and lower the brightness until the flickering stops, I don't really know what to do since I don't get flickering when it's between 2-15% and sometimes I like having it that dim so hate to set the trim higher.
It's something I can live with but just thought I'd reach out to see if there's any options or anything I can add on to my system that might help. I'd love to fully replace all my Insteon with Caseta but I'm forced right now to keep them in lesser used areas like the basement. Would love any feedback, or even confirmation on if this is caused by not using a neutral, as then I'll know to at least buy the Pro versions of the dimmers that include the neutral for more common areas like the kitchen and so on.