Problem Description
Your Hubitat Elevation C-8 hub is not responding, showing devices as offline, or having issues with Zigbee or Z-Wave device communication.
Common Causes
- Hub needs a reboot
- Database has grown too large
- Zigbee or Z-Wave radio interference
- Too many ghost devices
- Network connectivity issues
Solutions
1. Soft Reboot the Hub
- Go to Settings then Shutdown
- Click Reboot
- Wait 2-3 minutes for full restart
- Check if devices respond
2. Check Hub Status
- Go to hub IP address in browser
- Click Diagnostic Tool in menu
- Review hub health metrics
- Check database size (should be under 50MB)
3. Fix Z-Wave Ghost Devices
- Go to Settings then Z-Wave Details
- Look for devices with no route or marked as failed
- Try Refresh on the ghost device
- Then try Remove if device is truly gone
- May need to exclude and re-include actual device
4. Rebuild Zigbee Network
- Power off all battery Zigbee devices by removing batteries
- Leave powered Zigbee devices on (they form the mesh)
- Reboot the hub
- Wait 24 hours for mesh to rebuild
- Then power on battery devices one at a time
5. Reduce Interference
- Move hub away from WiFi router (at least 3 feet)
- Avoid USB 3.0 devices near hub
- Keep away from microwaves and cordless phones
- Use USB extension for external Zigbee/Z-Wave sticks if applicable
6. Soft Reset (Preserves Z-Wave)
- Go to Settings then Diagnostic Tool
- Select Soft Reset
- Hub will reset but keep Z-Wave radio paired
- Restore a recent backup after reset
When to Contact Support
Contact Hubitat Support if the hub LED shows error patterns, will not boot to web interface, or you need to perform a full factory reset.