LZW-36 Intermitent

Switches Wiring Discussion
#1

I’m struggling with one of the two LZW-36’s I installed. Sometimes it works, sometimes it doesn’t. I think it’s getting good power at the fan module, but haven’t confirmed with a volt meter yet. Sometimes it turns off and on via switch buttons or via ST / Google Assistant fine… other times, it just completely ignores the commands from any source.

It seems every time I decide to check on the fan module and pull the canopy down, it works. I button it back up, and then it starts acting up again with no discernable pattern. Thoughts / Help please?

Edit: When it’s acting up, neither fan nor light control works. LED’s on switch module change like it’s trying to do something

#2

See if you can route the canopy module’s antenna outside of the canopy cover. Pulling the canopy cover off and getting improved performance suggests a signal strength issue. Or leave the canopy cover dropped for a week or so to see if the improved performance continues.

2 Likes
#3

Hey @angst - question for ya - do you know what firmware you have on the switch?

You can check this in IDE: https://support.inovelli.com/portal/en/kb/articles/how-to-find-your-device-info-for-troubleshooting-smartthings

Look for where it says, “Raw Data” and it should show the firmware version: 1.3x

#4

It’s 1.31.

#5

Ok, that may explain it. There was a bug in the 1.31 firmware: LZW36 Fan/Light Switch Canopy Module Disconnection Issues

What we can do is swap out that switch for you or if you have a Z-Stick, you can update the firmware via SmartThings by following these directions: https://support.inovelli.com/portal/en/kb/articles/how-to-update-device-firmware-z-wave-smartthings-secondary-controller-method

Whichever method you’d prefer is fine (it’s just the switch part, not the canopy) – just let us know and we’ll get it taken care of!