I just installed a new Red Series Dimmer Switch (LZW31-SN) and I like the functionality so far. However, there is a loud, audible buzzing noise I can hear coming from the switch. It’s quite noticeable from a distance and the I don’t have the same issue with my Red On/Off Switch (LZW30-SN) which are powering the same type of bulbs or my older NZW30 switch.
Is it possible that there is something wrong with the hardware? The date code is 0919, if that is relevant at all. On another note, I notice that the dimming transition isn’t smooth even when the ramp rate is set to a long time (8 seconds).