Hello everyone. I have been dealing with an issue with my C-8. None of my Zigbee devices are reporting. I have rebooted the Hubitat. Rebooted and rebuilt the database. Disabled the Zigbee radio. Powered down the Hubitat. Unplugged the Hubitat. Repowered it after about 5 minutes. Reenabled the radio. Tried to readd an already connected device, it didn't discover it. I deleted a device and tried to readd it, didn't discover it. I tried to add a brand new Sonoff contact switch out of the box, didn't discover it. I scanned for a Zigbee device just to see if that would trigger something when there was nothing to pair to. I have changed channels and power settings. Nothing is working. I can't send a command to a device. I have 6 repeaters and 25 devices that have been working just fine for well over a year.
When I do a channel scan, I get this:
| Channel |
RSSI |
LQI |
Pan ID |
Extended Pan ID |
| 11 |
0 |
0 |
|
|
| 12 |
0 |
0 |
|
|
| 13 |
0 |
0 |
|
|
| 14 |
0 |
0 |
|
|
| 15 |
0 |
0 |
|
|
| 16 |
0 |
0 |
|
|
| 17 |
0 |
0 |
|
|
| 18 |
0 |
0 |
|
|
| 19 |
0 |
0 |
|
|
| 20 |
0 |
0 |
|
|
| 21 |
0 |
0 |
|
|
| 22 |
0 |
0 |
|
|
| 23 |
0 |
0 |
|
|
| 24 |
0 |
0 |
|
|
| 25 |
0 |
0 |
|
|
| 26 |
0 |
0 |
|
|
It gives me a Pan ID and an Extended Pan ID. Radio states it's online. I rebuilt the network 12 hours ago and still can't even add a new device.
Platform version
2.3.9.166
I have no warning and nothing stating that there is an issue with the radio. I don't know what else to try. Thank you in advance
It is possible the radio may be toast. Go to support.hubitat.com and click warranty (doesn't matter if it's in warranty or not) and submit a ticket. Leave the id of your hub. Support can look at the engineering logs. Be aware though, some staff is on vacation so there may be a small delay before someone from support gets to you..
2 Likes
Long shot, but don't use POE solutions. I had odd ball C8 radio problems until moving back to normal USB power.
1 Like
What channel is Zigbee set to? Try channel 25, power 8 or less.
Also as mentioned, check your power supply and cable, use the OE or equivalent 1A USB-A dedicated power block. For testing do not use any sort of power strip with USB port or PoE splitters.
1 Like
I use the OE power supply plugged into an APC UPS. I did change it to channel 25 and dropped the power down to 8 upon your recommendation. I believe I was on 18 before with the power set to 20.
And... still not working? I would try pairing something on the new channel.
1 Like
Can / should try a different USB power brick.
2amp would be good choice many people have found that changing out the power brick seems to help.
I was able to re-add one of my motion sensors. My channel scan shows some info for channels 11 and 25 now:
| Channel |
RSSI |
LQI |
Pan ID |
Extended Pan ID |
| 11 |
-63 |
148 |
|
|
| 11 |
-60 |
160 |
|
|
| 25 |
-71 |
116 |
|
|
| 25 |
-13 |
255 |
|
|
| 25 |
-81 |
76 |
|
|
I am able to add my devices back in now. I'll see if it acts up again in the next couple of days.
Thanks for all of your help.
Channel 25 is good because its on the edge of the Wifi spectrum so you really only get some interference from Wifi channel 11. Also, for power, less is more, more power = more noise. You also can run into an issue where the hub has more radio power than devices, for example the hub can reach a device but the device cannot reach back to the hub. Someone else explained it better somewhere on here but thats the gist of it. So keep the power at 8 or less unless you have a far away device that wont work without the power being higher.
