I have several 2-in-1 switches in 3-way configurations, all with dumb switches, all with the line/load in the same box configuration (the previous owners seem to have wired everything the same, which makes sense). All of the setups work flawlessly, except one.
In the problematic setup, I can toggle the light on and off from either the inovelli smart switch or the dumb switch, but in one (and not the other) of the toggle states of the dumb switch, the light is never actually completely off—it’s every so slightly dim. Moreover, when I turn the light on in that state from the inovelli side, it quickly turns completely off then fully on.
I cannot figure out what’s going on. I’ve triple checked the wiring, though of course that still may be the culprit.
The only difference with other 3-way setups I have is that it is in on/off rather than dimmer mode, and is controlling a non-dimmable LED bulb.
What is going on and how might I go about fixing this?
What is the bulb that remains slightly dim in one toggle position? Have you tried a different bulb? The switch is probably leaking a little voltage, which is normal, and the bulb you are using has a very low threshold for turning on.
If a factory reset does not resolve it, I would try a bypass.
The bulb in use when originally reporting was a Philips 1000 lumen, 2700K LED non-dimmable bulb. I’ve now replaced it with a dimmable Philips LED (one of 800 lumen, eyecomfort ones).
Same behavior in On/Off mode. In dimming mode, the toggle position that has a dim light when the bulb is supposed to be “off” also toggles between fully on and mostly off at about ~5Hz (seems slow to be “flicker”, but maybe that’s what it is?) when the bulb is supposed to be “on.” Again, the bulb behaves normally when the dumb switch is in the other position.
I’ve got a bypass on the way, but I don’t really understand what’s going on and how a bypass would help (I think I understand with just the low-light when it’s supposed to be “off”).