Unsupported command class - start flows

Questions & Help
1

Dear all

I am experiencing intermittent issues with Scene Activation events from Fibaro Dimmer 2 modules (FGD-212) on my Homey Pro 2023 (firmware 13.5.1).

The physical switching of the dimmers works reliably, but the Scene Activation events used to trigger Homey Flows do not always seem to be processed correctly.

I have inspected the Z-Wave logs and noticed repeated entries such as:

unsupported command class COMMAND_CLASS_SCENE_ACTIVATION - SCENE_ACTIVATION_SET

The logs show that Homey does receive and decode the Scene Activation command (for example, Scene ID 26) from the Fibaro Dimmer 2. However, it subsequently logs the unsupported command class error.

Interestingly, in the same log, Homey does successfully send commands to another Z-Wave device (node 48) shortly after receiving the Scene Activation event. The target device receives the commands and reports its updated state. So this does not appear to be a general Z-Wave communication issue.

The problem is that the behaviour is inconsistent: sometimes the relevant Flow is triggered and works as expected, while at other times it does not.

I understand that similar Scene Activation issues were reported by other Homey users in connection with earlier firmware versions. Could you please tell me whether this is a known issue in the current firmware (13.5.1), or whether there may be a problem in the handling of Scene Activation commands by the Z-Wave stack or Fibaro app?

I can provide the relevant diagnostic reports and complete Z-Wave logs if helpful.

Please help. Thanks

2

Welcome, Niels.

Fibaro is published by Athom → please contact https://homey.app/support

3

Thanks Peter! Happy to be here. Am a bit confused what I am doing wrong here then. I saw an old topic from May with the same issue here. Seeing that was very old I thought I open a new topic, but maybe I should have used the old one? Or am I doing other things wrong? :slight_smile:

4

Hello Niels,

It’s not about wrong here, it’s about the preferred way of the developer to report issues, fellow forum users cannot help you with.

The preferred way is mentioned on the app page at the homey.app store, and to help you I shared that preferred way here, the link to Athom support.

Not sure which old topic you refer to, but this is the dedicated Fibaro discussion topic:
https://community.homey.app/t/app-fibaro-your-home-is-your-castle-by-athom/362?u=peter_kawa
The date of the last post is Oct. 2nd, so it’s very alive.

However, as I mentioned already, other forum users cannot help you out on your issues, only the app developer (Athom in this case) can.

I hope it makes sense now :wink: