Got a 10-pack of LZW31-SN red dimmers that I’m setting up around the house.
This has happened twice now, once while using zwave2mqtt, and once again after I migrated my setup to zwavejs2mqtt. I’m hosting those apps in docker on a Raspberry Pi 3b, using an Aotec Z-Wave Stick gen5 (not plus), talking to Home Assistant in a VM. Home Assistant’s not really involved here, just mentioning it for completeness.
Both switches were being wired in 3-way configurations, with neutral wire, and with one or more dumb switches in the circuit.
I attempted to set the settings for Neutral wire plus 3-way dumb switch via software. By all evidence, the software says it successfully set the settings. When I interrogate the switch using the software, it reports back to me that it’s set correctly.
But clearly the settings weren’t changed based on the circuit behavior. Classic case of flipping the dumb switch leaves the LZW31-SN powered, but the dumb switches don’t control the circuit.
In both cases, I went through the manual settings on the switch to set up those 2 key settings (neutral and 3-way dumb switch) and then things started working as expected.
I haven’t tried digging much deeper with other tools to diagnose.
Sharing in case this helps anyone else.