I’m just getting started with Smartthings, I got a hub and a fan switch - GE Enbrighten Z-Wave Plus (14287). I haven’t even had a chance to setup the hub yet, but I installed the switch without issue. It correctly controls the fan speed.
Installation was on a Sunday, but of course I had a business trip on Monday. Now I’m getting a call from my spouse on Tuesday that when she flips the light on in another room (same breaker) the breaker trips. Note, everything was fine with the light in the other room for two days.