coming to the experts because I can't figure out what's going on and why.
Goal Install a smart 3-way dimmer switch that allows 8 recessed LED lights to turn on/off and dim correctly.
- In my living room, I have 8 recessed LED lights that were previously on a Lutron dimmer light switch that worked perfectly and dimmed the lights correctly.
- I replaced the Lutron dimmer switch with a TP-Link smart 3 way dimmer switch and all 8 recessed LED lights turn on from both switches.
- The lights are Sylvania RT6 and are currently installed using a retrofit adapter that screws in to the light socket in the can, and has a cord coming out of it with a plug that attaches to the plug on the light itself.
ISSUE: Though the lights do turn on with the smart 3-way dimmer switch, the lights do not dim anymore.
- Validated the smart switch wiring and confirmed it was correct on both the main and satelite switch
- Added the Lutron switch back to confirmed it was able to dim the lights correctly using the same wiring.
- Reinstalled the smart 3-way dimmer switch
- Called an electrician and had them confirm the wiring was correct, even though they didn't know what would be preventing the dimmer from working as they weren't as familiar with smart switches.
- Bought a few different varieties of similar LED recessed lighting, installed in one of the 8 recessed lighting spots, and found they all turned on, but the dimming did not work.
- Today, with the smart switch installed, I removed one of the recessed lights completely, and just screwed in a dimmable LED bulb directly into the light socket, and that bulb turned on AND was dimming as expected with the smart switch reinstalled.
- In addition to that new bulb working and dimming as expected, all of the other recessed LED lights now began to dim as well.
- I took the LED bulb out and the other recessed LED lights would turn on, but would no longer dim.
Please Help! There must be a reason that installing this LED bulb allows all other LED recessed lights to turn on and dim as expected, but I can't figure out why.
I'm wondering if I should try removing the retrofit adapter and just splice the cables from the LED recessed light directly to the power cables. However, since I know that all of the other recessed lights are installed the exact same way with the adapter, and I've seen that they can be dimmed with this smart switch, I don't think that answers the question.
Update 1 Thank you all for the comments so far. I did test removing the adapter from the equation and connecting the pre-existing Sylvania LED light directly to the hot and neutral. The light turns on correctly but it and the other lights still do not dim. This confirms the adapter is not the issue.
Update 2 The new bulb I added that allowed dimming on all 8 lights seems to be pretty standard. It’s a GE LED, 800 Lumens, 2700k, 10w, 104mA, 120VAC, 60Hz. Model: LED10DA19/827.
Update 3 For anyone who may have a "try this", please let me know. I'm willing to try just about anything, but hoping to avoid having to replace all 8 recessed lights.
Update 4 When thinking about this more, I realized that the answer lies somewhere in the former Lutron 3-way dimmer switch that was previously installed. Since this switch allowed the lights to dim before, it means that there is something in this switch that allowed the lights to dim. Whatever "it" is, my smart switch doesn't have it.
The only difference that stands out is that the old switch did not require a neutral, while the smart switch does. Does that shed any light? (pun intended)
Here is the link to the Lutron switch that was on there before: https://www.lowes.com/pd/Lutron-Skylark-Single-Pole-3-Way-White-LED-Slide-Light-Dimmer/4165017