Adding Nest Thermostat via Matter fails (Error code: 39-511)

Devices & Integrations
1

I just purchased the latest Nest Thermostat, specifically because it supports Matter integration. But when I try to add the device to SmartThings using the setup code generated by the Nest, it fails adding the device to SmartThings.

Commissioning begins smoothly, the process finds the device and determines it’s a Nest Thermostat. In the final step “adding the device to SmartThings through your hub” it eventually fails with the error code 39-511.

I’m not sure where to find any additional details on what’s happening. I’m running the latest software on the Nest Thermostat, and have tried everything I can think of.

Does anyone have this working? Any ideas what I might try next?

Thanks,

Chris

2

Hi, @ChristopherH
Can you share the following with us, please?

  1. Complete model of this Nest device
  2. Which OS (Android/iOS) and app version are you using?
  3. Please open support access
  1. We need your help to reproduce the issue and record the app’s screen so we can see the same as you
  2. After that, submit the hub logs (instructions below) and share the timestamp of the test including your timezone.
  1. In the Advanced Users app, enter the “Hubs” section
  2. Enter the corresponding Hub and click on “Dump Hub logs”
  3. Confirm the process by clicking on “Dump Hub logs” again in the pop-up.
  4. You’ll get a green box at the top confirming the Hub logs were requested.
3

Hi Nayelyz,

1. Model: Thermostat-1.4 / SW Version: 2.2-6

2. Android CinnamonBun build CP21.260206.011

3. Where do I open a support case? I did submit a request from the app, but it didn’t provide any case information.

4. Attached is a screenshot of the final screen once it times out. I can make a series of them if you want to see all of the screens, but it takes several minutes for it to actually timeout.

5. I submit the logs, which should contain my attempts to pair with the thermostat.

Thank you!

Screenshot_20260303-104828
Screenshot_20260303-1048281080×1547 113 KB

4

Quick question.. the ST hub and Nest Thermostat are on the same subnet?

5

Yup, they are. I have other Matter over wi-fi devices which work as well.

Chris

6

Hi, @ChristopherH
I see you have more than 1 hub, can you let me know the name of the one where you tried to discover the device to get its ID for the report, please?
Also, the screenshot you took was at 10:48 am, and you’re using Pacific Time, correct?

7

The hub in question should be <REDACTED>-c9702cc7657d as it’s the HA primary. That’s the one I sent the logs for.

And yes, that time on the phone is Pacific Time. Thanks!

1 Like
8

Hi, @ChristopherH
The engineering team checked the hub logs, and they noticed they present the same error as the known issue with Nest devices.
The Hub firmware version 60 should help with this (which is currently available for the Beta Group), so the suggestion is to install this version in your hub to see if it helps.
We can add your hub manually to receive only this version, but we need your authorization if that’s what you want.
You can also wait for the Customer release, but there’s no ETA yet.

9

Hi @nayelyz

Great, thanks for the update. Please add me to get the version 60 beta update, and I can report back. Thanks!

1 Like
10

Hi, @ChristopherH
The engineering team added you to the list to receive this last beta firmware. This won’t add you to the Beta Group completely, you’ll receive the Beta update only this time.
The next time the Hub “checks in” with the platform, it will be updated. You can speed up the process if you reboot it.

11

Hi @nayelyz

Great! I updated to v60 and the issue is resolved! Thank you so much for your help!

Chris

1 Like
12

Hi, @ChristopherH
The engineering team told me that if you wish to continue being part of the Beta Group to receive the firmware updates beforehand, you should enroll directly as mentioned here: