If the verification poll after changing a value returns `null`, the device is likely in transition

[bluediamond1984]

Checklist

• [X] I am not using Home Assistant. Or: a developer has told me to come here.
• [X] I have checked the troubleshooting section and my problem is not described there.
• [X] I have read the changelog and my problem is not mentioned there.

Deploy method

Docker

Z-Wave JS UI version

8.25.0.c77db28

ZwaveJS version

11.14.0

Describe the bug

My Fakro AMZ screen isn't holding the last state anymore. Latest working version z-wave-js-ui 8.18.1

After the state changed (open or close) the Current value of Multilevel Switch v3 holding the first 5 seconds the correct state (0 or 99) and then changes to null.

During opening or closing (around 16 seconds) the device reports null, but doesn't come back alive anymore. When opened or closed and I push the refresh button for Multilevel Switch v3, the state returns and holds.

node_2.json.txt config_entry-zwave_js-934e791c8aaee21714c1182d8f46635b.json.txt

To Reproduce

Open or close Fakro AMZ screen. Current value returns null after 5 seconds. During opening or closing (around 16 seconds) the device keeps reporting null. Pushing the refresh button withing this time period is returning null.

Expected behavior

Current value shouldn't update when opening or closing to prevent returning null when device is busy.

Additional context

I use it with Home Assistant to check if the screen is open or close, so any other automation can trigger. Now it's reporting Unknown after 5 seconds and doesn't come back alive anymore. This is related to the Current value of Multilevel Switch v3.

After opening/closing

After manual refresh

[robertsLando]

/cc @AlCalzone

[AlCalzone]

Please make a driver log, loglevel debug and attach it here as a file (drag & drop into the text field). @bluediamond1984

[bluediamond1984]

@AlCalzone, here is the log. zwavejs_2023-09-09.log

[AlCalzone]

Do you know if it ever reports the final status on its own? Your log doesn't look that way, although the manual indicates that it should:

Can you share a screenshot of the Groups tab?

[bluediamond1984]

It doesn't. When press open/close there is a brief moment of the new state and then it returns null. A push of the refresh button is always needed.

My groups from the device are empty. And the is nothing I can add.

That got me thinking and I have now added polling for Current value with an interval of 10s. Now it's reporting the state after 20 seconds. So that part is working.

But the state is still returning null directly after open/close action.

[AlCalzone]

Polling isn't ideal. Looks like the device information wasn't requested fully. Can you re-interview the device and share another driver log of that?

[bluediamond1984]

Devices are re-interviewd and I have also upgraded to 11.14.2. See attachment for debug log. I have removed polling from the settings in the second try (I had forgotten to save the settings). zwavejs_2023-09-13.log

In groups nothing has changed. Polling on it's own doesn't work. The Current value has changed and isn't returning null anymore when I open/close with Binary Switch or Multilevel Switch. A manual refresh is still needed. When I change state from HA, then Current value is still returning null after 5 seconds.

[AlCalzone]

Ok, looks like the device in question is the old (non Z-Wave+) variant here: https://products.z-wavealliance.org/products/677?selectedFrequencyId=-1

That doesn't support associations, so you must probably poll it for changes made on the device itself. I'll look into handling the "unknown/null" state after controlling it.

[AlCalzone]

Info for future me:

• Motor Control Class B, only endpoint aware, not position aware

[bluediamond1984]

Thanks @AlCalzone for your support. Polling works and it is what it is. I look forward for a solution you can come up for the null state.