Something wrong in my OZW log and cannot tell what it is

Configuration Z-Wave
1

Hi there.

Now that I limited the OZW log level to warning and higher, I started to notice a few warning and error messages that I was not aware of.

As soon as my HA starts, I get the following warning logged:
Warning, Node016, Couldn't Generate Nonce Key for Node 16

By the way, Node016 is an Aeotec Home Energy Meter, if that is relevant.

This warning occurs a couple of times on startup, so I guess it goes away as soon as the z-wave network starts. Nonetheless, what could be the root cause for this?

Another message that pops up regularly is this one:
ERROR: Dropping command, expected response not received after 1 attempt(s)

This occurs on several nodes of my zwave network, including Node016.

Any clues of what may be causing this?

And finally, the following error occurs also very often:
Error, contrlr, ERROR: ZW_SEND_DATA could not be delivered to Z-Wave stack
or
Error, NodeXXX, ERROR: ZW_SEND_DATA could not be delivered to Z-Wave stack

These errors occur within the first 10 - 15 minutes after a HA restart, but they also come up when I turn on or off some of the zwave switches on my z-wave network.
And it may be a coincidence, but I’ve noticed that if I turn on a switch and this last error message is logged, the switch seems to stick to ON if I try to turn it off (I have to turn it off two or three times to make it work).

Anyone has a clue of what is happening here?

2

Totally a guess here, but try changing the reporting type of the node to Binary. Look up my post here from the last few days…I had to do it for both of my Aeotec devices.

3

Thank you Itoolio.
Can you please provide me the link for that post you mentioned?

4

I also have periodic issues with z-wave and see this error in my log files:

ERROR: ZW_SEND_DATA could not be delivered to Z-Wave stack

It seems to be an intermittent problem as far as I can tell.