Hi all, I have several Leviton DZ6HD Z-wave plus dimmer switches in my house that all work good but there is 1 that regularly becomes unresponsive or drops off the z-wave network. This happened regularly on my C5 hub and was hoping it would resolve upgrading to the C7 hub but it just happened now on the C7 hub.
I feel like I have a strong z-wave mesh and the switch is right above the room where the hub and a aeotec z-wave range extender is and looks to have had a good signal the last time it reported.
I will replace the failed node and then things will be good for a couple of months and then it happens over again.
Any ideas how to fix this permanently? Factory reset the switch? Repair a database of some kind? Replace the switch entirely?
Here's the details of the device when it last reported:
Here's my z-wave details I have one glass break sensor I need to repair from migrating from the c5 hub to the c7 and an aeotec siren that the driver also creates a doorbell device (neither this doorbell or the glassbreak sensor are ghost nodes):
I had this EXACT same issue for a couple YEARS. A Leviton DZ6HD Zwave dimmer in my kitchen would randomly disappear/stop working via Zwave and reset to it's out of box behavior. Sometimes it would only take days between occurrences, other times I'd get a few months of it working perfectly and then all the sudden it was reset and disappeared from Zwave control again.
So, I started noticing it happened more often in the summer when the air conditioner was turning on and off a lot. One day while I was in the kitchen, it was confirmed... The AC turned on and at the same moment the LED on the dimmer turned off for a second then blinked several times - and I could no longer control it. Somehow the surge of power that starts the AC was causing my dimmer to factory reset itself every now and then...
I opened the electrical box up and immediately found the problem: the ground wire from the source side Romex had broken off leaving the box and switch and everything after it ungrounded. I fixed it and have never had a problem since.
I would say that does make sense, a bad ground can cause all sorts of strange issues. @cj_rezz would be worth checking to verify your ground is making a path all the way back.
Well I'm guessing the ground was the issue as it seems I must have been rushing and didn't even hook the ground up to the switch when I first installed it. Time will tell but I'm guessing that was defintiely the issue! Thanks so much for pointing out that a bad (or lack of) ground could be the issue!
For some reason it didn't migrate over through hub protect from my C5 to my C7. Have to fix that node but was lower on my priority list of things to fix after migrating.
