Hi all - the support team suggested I post this here to get your input.
I replaced a Red Series LZW-31SN with a new Blue VZM31-SN. The Blue Series buzzes, especially when acting as a dimmer, in a location where the Red Series did not.
It is single-pole with 3 LED recessed-style bulbs (9W each). These are the bulbs /.
Is there anything I can do to troubleshoot this? Or is the switch potentially a dud?
I first noticed the buzzing after switching the switch to dimmer mode. It is louder when dimmed to mid-point levels, and noticeable from about 2-3 feet away. (You can notice it when you walk by.) After, I switched it back to on/off mode, and noticed it buzzes in that mode too but only slightly – noticeable from about 6 inches away.
This may be unrelated, but there were a couple of other odd points about this switch that gave me pause:
It did not enter pairing mode on initial power up (no blue pulse). A factory reset (config + up for 20 secs until red) did not trigger pairing. 3x tap of config button did not trigger pairing. Finally, I was able to pair it successfully by pulling the air gap; and after pushing it back in, pairing mode was triggered.
The air gap was rather hard to pull out: I had to use a coin, could not use my finger.
Ah - I should clarify. The Energy Star website I linked to is confusing because it has a photo of an unrelated light fixture on it (under “Find and Compare”).
All 3 of the lights are the same type: the Commercial Electric 5/6 in. Color Temperature Selectable Integrated LED Recessed Trim model, just an older version of the one now available on the Home Depot website.
I had one instance of a red series making a noticeable buzzing sound. It was in a non-neutral configuration. I added a neutral to the box instead of installing the relay, and it’s been happily sitting there for around 2 years without making a sound.
By any chance is this switch in a non-neutral configuration?
@kreene1987 and I think @stu1811 (maybe) had wafer retrofits working with a Red dimmer. One of them may have swapped out for a Blue. If they did, they can comment on how well the Blue works with their wafers.
Another data point on this-
I have a Blue set up as a dimmer, neutral single-gang. Load is 6 Feit PAR16 floods, 4.1W each, dimmable. With a Zooz Zen27, the dimming was silent. I can hear a faint buzz coming from the lights with the Blue doing the dimming. Only at 100% does the buzz go away.