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Trouble with Recessed Lights on Dimmer - Differing results

425 Views 6 Replies 4 Participants Last post by  Let it Snow
Just installed 6 recessed light fixtures in our living room, and am getting some weird results with the bulbs/dimmer that I can't understand.

We have a Legrand RHCL453PT preset paddle dimmer in our basement, and it gives a great range of 'dim-ability.' So, figured we'd use the same thing in the living room.

I first tried some Sylvania LED 65W 3K retrofit bulbs, but they don't dim nearly as much as we want them to, even after adjusting the internal control to full range of dimming. Next, tried some Commercial Electric 65W 3K retrofit bulbs (Home Depot), and while they dim slightly more, it's still not down to the 10% as advertised in the documentation for the bulb. I then tried a bulb from the basement (Patriot from Menards), and it gets a lot dimmer, but not as dim as it does in the basement.

Then it got weirder. I boxed up the Sylvania and Commercial Electric bulbs to take them back, and for kicks turned on the lights with only the Patriot bulb installed. With just one bulb installed, the dimmer control could turn the bulb almost all the way off. Figured this was a good thing, so added a second Patriot....but then it went back to less dim-ability (maybe 15% at it's lowest).

So I'm a bit stuck....I have a few more bulbs that I'll try to see if it's a matter of manufacturer differences (of course, the Patriot bulbs are discontinued...), I'm open to trying a different dimmer, but am also confused about why I'm getting such variation between bulbs (both manufacturer and # installed...).

Any thoughts & input are greatly appreciated.

And to reiterate, yes, I have set the internal adjustment control on the switch to full range.
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Are your bulbs spec'd as dimmable? Not all LED bulbs are.

That said, even with dimmable bulbs, some brands/models work better with some dimmers and not others.

I don't know if Legrand maintains a compatibility list, but Lutron has a tool to help match bulbs with their dimmers.
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