Hi - I had been on a C7 since September when I bought it new to replace SmartThings, and overall everything was good. SmartThings was working fine too, but the writing was on the wall with the proposed changes, so I figured it was time to move.
Some Z-Wave devices took multiple tries to get paired with the C7, but honestly it was all working well without any additions or changes on my part for about 5 weeks before problems started. I had been on the firmware that shipped with the hub (2.2.3.148) from the day it arrived, and the only change to my hub around the time of the problems was that it started receiving updates, and I accepted them. It started on November 16th and just kept getting worse with more failed / unavailable devices, and of note is that automations related to these devices would work one day, but then not the next, but sometimes they would come back on the third day. Almost seemed random what was going to work or not.
I have 20 something in-wall switches, 2 in-wall outlets, 2 plug in outlets, a few motion sensors, contact sensors, sirens, tilt sensors, valve actuator, in-wall relays... and maybe a few others on the Z-wave side. The mesh was strong with all the hardwired devices, as I had started in close and worked my way out when first installed and when switch over to Hubitat.
I submitted a support ticket on November 25, but being it was the day before Thanksgiving, I started a Facebook post in the user group to try to keep working on it over the long weekend...
I did get a response to my ticket on November 30th, but despite writing back a few times I have not heard anything back, and at this point I am 3 weeks into having issues, and close to 2 weeks with no Z-Wave.
Thanks to Bobby Dobrescu for trying to help me in that Facebook thread, but nothing improved. Effectively, that thread lead me to reset the Z-Wave radio, remove remaining Z-Wave devices from the Device list, and then try to reset them, and exclude and re-include my devices. The hub did not acknowledge that any devices were even available for exclude/include.
I have Zooz and Ge/Jasco switches I started with that are within feet of the hub, and the hub was then moved to be within an inch of either I tried... No response. I kept trying those devices repeatedly, did try a few battery powered devices, and then finally had success with a single device excluding and re-including... a Zooz ZEN06 plug in outlet. Not sure why it worked, but it remained the only one that worked as I kept trying the switches in close proximity to the hub. I continue to let the hub receive firmware updates, but have also tried rolling all the way back to 2.2.3.148. I have rebooted, shutdown properly and left it off for hours, let the hub just sit there powered on, and any other pieces of advice people have posted in similar instances.
As I continued to read things online and work on things on my own as I waited for official guidance, I convinced myself a soft reset was worth a shot. That process seemed to go OK, but now even my one working Z-Wave device, the ZEN06, will not come back.
I own a Fibaro Home Center Lite which has always been useful as a 'universal excluder' for times things in SmartThings had to be forced out, or when I got devices from other people that were not excluded. It would always exclude Z-Wave devices for me no matter what it had been paired with previously. I got that out of the closet now and it also fails to see any of these Z-Wave devices.
I really can't imagine what is wrong. I have been using Z-Wave on one hub or another for 6 years maybe, and have never had issues anything like this. All kinds of ideas are now running through my head since the obvious answers aren't working... like signal interference, power surge, device corruption, malware. They don't really fit, but neither do the reasonable answers.
Any ideas? Thanks.