[C8 2.3.5.109] Wondering about Z-Wave Behavior

[rob9]

I have a device ("Master Bedroom Ceiling Fan Light") that is, maybe, 10 feet from my hub--doors are open between it and the hub and the walls are just standard drywall).

Yet, it often ends up routing halfway across the house and back--I was doing some packet viewing and it seems pretty odd. Note that, in the packet trace, it uses the decimal "30" number vs. the hex "1E" number.

At the moment of this details snapshot, it seems to think it can connect directly at 100Kbps--but, as you see, it is changing its mind a bit.

Most of my devices on the new C8 are connected directly, at 100Kbps--but this one is really odd. It will connect directly at 100Kbps for a moment then, for whatever reason, it decides to go to 9.6Kbps and on a circuitous route.

It's one of the Inovelli Red Series Dimmer switches (and in a 3-gang box with 2 other z-wave switches that seem to be more "well behaved").

There are a few folks here with some serious z-wave understanding--I figured maybe someone would understand what might be making this light so unhappy (from the packet trace, it appears that the "ACK" is being sent but not received???).

The packet tracer is rather close to the hub itself (a foot or 2 away, right below it) so it and the hub should be seeing the same things.

Maybe @bcopeland would have a thought on why that 30>127 ACK packet wasn't seemingly understood by the hub??

I'm not seeing this on all my Inovelli Red Series dimmers, either.

And, I'm not sure this is a "horrible issue" (it seems to work, but also seems to be less than ideal)--I'm mainly just wanting to learn about why this might be happening.

Thanks!

[rlithgow1]

For giggles have you tried excluding then re pairing?

[rwclements228]

Vertical antennas tend to radiate uniformly 360 degrees around the device with the exception of above and below the device. That is the nature of vertical antennas. Since the Hubitat hub is so close to the ceiling fan, which is presumably above the hub, it might be that the "best" signal path to the fan might be through a repeating device located much further away.

You might try moving the location of your hub slightly to see if that changes things.

[rob9]

1. this is a driver plus a child. Used in a large number of places on a meshed hub. Removing and pairing again runs a risk of 20+ hours of fixing things.

2. the switch involved is about 8 to 10 feet away from the hub and 3 get lower than the hub. The other 2 z-wave switched in the same, 3 gang box work fine

From looking at the traces, the packets are seemingly being sent fine, but the hub isn't seeing the acks on that one channel.