@mike.maxwell@bravenel Not sure if it is the device or hub. I am getting an error message in the log:
2023-10-15 11:52:51.952 AMdebuginmaster There was an error while calling zigbee.getEvent: read attr - raw: C8D30100001A05004208565A4D33352D534E, dni: C8D3, endpoint: 01, cluster: 0000, size: 1A, attrId: 0005, encoding: 42, command: 01, value: 08565A4D33352D534E
Weird thing it says it has paired I can control for 5'ish seconds then nothing. It pairs to my C-7 without issue. I only have a few zigbee devices on this hub. I have tried pairing right next to hub, from across the room, rebooted hub, pair with keys in clear, and trying to avoid 3.0 repeaters. all with no joy.
@mike.maxwell@ericm asked that I reach out and tag/include him. I have tagged Eric for visibility. @mike.maxwell should I create a ticket or do you and Eric want to work issue.
@sky320 Just want to confirm that you attempted pairing with the device driver completely uninstalled and the results were the same? Initially pairs, but after a few seconds the LED flashes Red? Strange that there are several with a C8 and they aren't seeing this problem but a couple are. @mike.maxwell are there any deeper zigbee logs that you guys could possibly see to help figure it out? I have seen something similar in other scenarios where the key exchange is not completed successfully so the pairing fails.
@ericm Yes, paired with driver completely removed from hub and within 5'ish seconds the device went back into pairing mode. I installed driver retried and same result. The strange thing is the hub shows that it paired and logs show no error. I can re-pair control another 5'ish seconds then right back to pairing mode on the VZM35.
you really need to capture this at the zigbee frame (sniffer) level as some of the security transactions are handled by the chip directly so the hub doesn't see them.
@mike.maxwell something that our engineer is seeing: "At the beginning, VZM35 successfully joined the C8 network, but when vzm35 applied for the second Key, C8 did not reply"
We can provide the full log if needed. This lines up with what some are seeing where the switch works initially but then stops after a little while. The strange thing is that there are a lot of C8 users that do not have this problem . . . only some. Mine it is able to pair just fine.
Any updates on this? I randomly happened across this thread via Google search, and I get a very similar 'red lights flash and then the switch becomes uncontrollable' after initially being controllable for roughly 5 seconds. Believe it's 4 red light flashes. Interestingly enough, I'm using a Tubes ZB coordinator directly into Z2M...no HE involved.
Oddly enough, every single one of my 10 units did this same thing, but through random messing around during setup I noticed that if I pulled the air gap switch immediately after Z2M noted that it had successfully paired & interviewed, waited a few seconds, then restored power, it would typically work. Had a couple units I had to do this process twice on, but other than that they've all been working for about a month now...except this one which seems to be re-experiencing this issue the last few days or so.
EDIT: so I (force) removed the switch in question from my Z2M, hard reset it, then let it rejoin and followed my "air gap the moment it successfully sets up" procedure and now it's back to working...at least for the moment.
