C8 hub shows devices but everything quit working

jtp10181 · October 2, 2024, 12:37am

Welcome, please see this helpful post:

Z-Wave Issues

For partial or total loss of Z-Wave control (radio seems dead), before doing anything else please shut down the hub from settings and unplug for 30 seconds, then re-plug to boot back up. This will allow the radios to fully power down and restart. A regular reboot only restarts the platform and not the radio hardware.

Confirm that hub's Z-Wave regional radio frequency matches that of your device. Check hub's region on Z-Wave Details page to ensure that is set to your local region (E.G. EU - 868.4 MHz, 869.85 MHz for European countries).

Official Hubitat Documentation Resources:
Hubitat Docs: Z-Wave Details
Hubitat Docs: How to Troubleshoot Z-Wave

What info to provide for troubleshooting assistance:

How is Hub being powered? Supplied power block or other (explain)

PoE power (with splitter) is known to cause major Z-Wave issues on the C-8 hub.

See this post for detailed write up on PoE testing: PoE and the C8

Provide screenshots showing entire Z-Wave details Page

Provide screenshot of Z-Wave Topology Map (red/blue squares)