I have GE Enbrighten Z Wave switch that controls a small bathroom exhaust fan taht I installed a couple of years ago . Worked fine via Hubitat, Alexa and the physical switch. Just recently we can't turn off the fan with the physical switch but everything else works.
Thoughts?
Is it a fan rated switch? Possibly burned it out with the fan if not.
First thing I would try is to power cycle the device via the breaker.
I use embrightens on my exhaust fan in my bathroom and have not had any issues. There should be a pull out tab you can use at the switch to power cycle it as well.
I have never seen a GE switch fail in that manner. I have not had an embighten version fail yet that I recall, The other(older) GE switches I have would go completely dead or start turning on and off quickly when they failed. The on off issue is a capacitor that goes bad and can be fixed if you can do a little soldering.
Not sure if it is still the case but I know with older versions pulling the tab didn’t cut power from the Zwave radio. So best scenario is to use breaker if possible.
I've had the opposite happen with an Eva-Logik Z-wave switch. The physical switch worked fine but it would not turn on/off via a rule. I did a factory reset and it worked again, but only for a few weeks. Even though is was 3 years old, Eva-Logik sent me a new one free of charge and its been fine ever since.