It started 2 days ago when when motion activated lights didn't turn on anymore. I checked several zwave sensors on HE's logs and they in fact had their last activity one to 2 days ago.
I've restarted the hub already, shut it completely down and unplugged it, too.
I also disabled and then re-enabled the zwave radio without any change in the behavior.
I just ran a zwave repair and none of the zwave devices finishes with the usual status "Repair done". Not one.
Each of them just shows "starting, pinging, setting SUC route 4 times".
I can still manually turn on/off zwave switches via Hubitat but it seems like their status is not reported back and the device log doesn't receive an activity entry.
Is there anything else I can try to get the zwave radio back to life?
Yes, they are. But also the power connected switches don't report back the status. Just mentioning this in case that you're thinking I should replace the batteries of the sensors.
Come on, the probability that all zwave switches and sensors go bad at the same time is a far stretch.
I think the hub's zwave radio going bad is more likely, don't you?
Uh no sorry wasn't clear - I was saying ONE device going bad causing the mesh to become unstable.. not all of them. I agree with you, all devices going bad simultaneously would be extremely unlikely unless you had a power surge/electrical issues or something.
I don't think you ever mentioned how many devices you have or what the brand and model of these are, so this is difficult to evaluate with the information provided. (Although not common, I have heard tales of several jasco z-wave switches failing at once with power surges, as an example.)
Come on guys, don't over complicate this, please. I'm just looking for some way to re-establish or to reset the zwave radio on the hub, hopefully without erasing all existing zwave connections..
Have you powered off all mains powered zwave devices/repeaters? Turn the breaker off or pull airgaps or unplug shouldn't over complicate things too much.
Believe it or not, after disabling the zwave radio on the HE, shutting down the hub, pulling the plug and leaving it for a few minutes, then powering it up again, enabling the zwave radio, and then running a zwave repair, a few zwave devices were able to complete the routing successfully. I've done this 2 times before and it didn't work.
Now it seems like zwave functionality is slowly coming back.
I'll give it some more time, probably 2 to 3 days and then see how it goes.
Thanks for the advice.