ZWA-2 Stopped Working | Home Assistant | Page 1

final prawn Feb 23, 2026, 5:09 PM

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I've been troubleshooting this for a couple days. I've had this ZWA-2 for a couple weeks, and it was working great. At some point, the zwavejs started throwing errors, and I've not been able to fix it.

I'm running a HA Green device, and the ZWA-2 is connected to one of the HA Green's USB ports.

I've tried reinstalling the app a couple times, and looking for solutions online. A lot of threads suggested powering off the HA device, disconnecting the ZWA-2, powering on the HA device, then reconnecting the USB once HA was started. That did not work.

I've attached the log from today.

Versions:


Installation method
Home Assistant OS
Core
2026.2.2
Supervisor
2026.02.2
Operating System
17.1
Frontend
20260128.6

Z-Wave JS: Version 1.0.1

📎 zwavejs-log.txt

open cave Feb 23, 2026, 8:19 PM

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I've had similar issues with a GPIO hat recently. Have you tried fully restarting the HA Green, not just Home Assistant itself?

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Oh, I should read. You did

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Can you try opening https://home-assistant.github.io/zwa2-toolbox/ in Chrome or Edge, Click "Recover Adapter", follow the wizard and see what it spits out?

final prawn Feb 23, 2026, 8:33 PM

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For that, I need to plug the ZWA-2 into my PC?

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I'm assuming yes, so I moved it over to my PC, and this is what I got.

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In case it's helpful, I only have one Z-Wave device currently.

So, if there's a way to go "scorched earth" on all the HA configs/data, and start over; I'm happy to do that.

open cave Feb 23, 2026, 11:01 PM

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I'm wondering if this has something to do with a recent HA (OS?) update. I've been seeing a similar thing with a GPIO hat on my Yellow, which wouldn't react anymore until I powered down completely.

This happened a few times during testing.

final prawn Feb 23, 2026, 11:06 PM

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I feel like it is possible that it broke after an update.

open cave Feb 24, 2026, 9:49 AM

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can you set your loglevel for the Z-Wave addon to "debug"? I'm missing a few things from those logs above.

final prawn Feb 24, 2026, 11:33 AM

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📎 zwavejs-debug-log.txt

open cave Feb 25, 2026, 7:45 AM

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Do you have more than one Z-Wave addon running? Z-Wave JS and the Z-Wave JS UI community addon?

The logs indicate that there is no communication with the ZWA-2 happening, but the device itself worked fine on your other computer.

final prawn Feb 25, 2026, 1:49 PM

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No, I only have the one Z-Wave app. Although the update where I think it broke was the big recent one where they changed from add-ons to apps. Could it be that the old Z-Wave add-on is hidden and running along with the app?

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Awww crap, I finally found it. I was the problem the whole time. I was working on installing RFLink the other day, and accidentally pointed it at my ZWA2 instead of the ESP32 board.

open cave Feb 25, 2026, 2:52 PM

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oops

#ZWA-2 Stopped Working