Openhabian, OH 3.2.0 My zwave network has never been perfect with some powered devices not responding at times - no pattern observed. Most devices ae powered and are plugin types plus a battery thermostat. I’ve assumed the problem was with a old windows server i was running, however that got repl…

I can’t tell from the PC Controller log if you are first clicking the (check) If Failed, then the Remove Failed but that is the order to remove a Node. Also, although I can’t say how, but possibly the same device is under two different node numbers. Can you look at the network section (with the no…

Update: Using the zensys PC Controller, it thinks my devices are present and working. they are not. The tool will not allow me to make as failed or remove them. [image]

[image] BigCol: Would the controller continue to try and contact failed nodes a long since binned, causing extra network congestion on the mesh network? In short, yes. I think “zombie nodes” is a good search term here.

Z-wave has always been flaky for me as well. I stopped buying new units and went WiFi + 433 instead for my new house construction. Can’t keep adding on if the foundation is already creaking. But, for removing old Z-wave nodes, I myself use the Z-Wave PC Controller software. Link in this old thread:…

Thanks for the info. Is zniffer free?

The software is part of the free silabs Simplicity studio (you do have to register). I can’t tell if you have it already (PC Controller) is also part. What you need is to flash a second zstick (so you might have to buy that). The directions and other Zwave zombie/performance tips is contained in …

apella12 helped me a lot with zniffer a while back. Well worth having on hand although it can be a little frustrating to get the pieces and software. I will add that I definitely have issues any time a device goes zombie. I had a nice zooz switch randomly drop out of the network. The controller …

i have a spare z-stick gen5, could i use that?

Yes, I believe so. Also I haven’t done this, my understanding is that it can be flashed back to a static controller if you decide to stop zniffing. Bob

Yes you definitely can. I had a ticket with Aeotec and they offered to provide the necessary firmware to turn a z-stick into a zniffer. I didn’t have the spare z-stick and they cost more than the silabs stick so I just bought the silabs one.