To start with, my system has been extremely stable for a couple years. I have not altered the system in any way as of late. Now, the issue:
A few days ago, most of my signee devices have become unstable, unresponsive, and off line. Some show “active” but won’t respond. I’ve tried accessing from the app and from the web.
When I run diagnostics, it says the device can’t connect to the cloud.
I have tried to delete a device and re add it, however, I am unable to add new signee devices. I have tried two devices known to work.
Mind you, I have no issues with zwave devices.
I have rebooted, I have taken the hub off line for over :30. I have deleted and reinstalled the mobile app.
The web diagnostics say the radios are fine.
There are a very few zigbee devices that seem to still be working, but there does not seem to be any rhyme or reason.
I am at my wits end.
If your hub sits next to other networking equipment - routers, APs, etc or have baby monitors… you can try moving it at least 10 feet away. That is one possibility.
From what you describe, your Zigbee devices have recently started to experience instability and connection issues, while the Z-Wave devices seem to be fine.
Solution
Reconfigure the network: Consider removing devices gradually and then adding them back to check if there is a specific device causing network issues.
Analyze the network with tools: Use a network analysis tool such as Zigbee Sniffer to monitor and diagnose network communication problems.
Replace the Zigbee coordinator: If other methods do not work, consider replacing the Zigbee coordinator to rule out the possibility of hardware failure.
Thank you! This is a very systematic approach and makes perfect sense. I did go with the simpler “Occam’s razor” approach, which turned out to be the solution, but will keep this in mind if it occurs again, and the simplest likely culprit turns out not to be the problem.