Daikin Onecta integration not finding devices

Configuration
1

I’ve been trying to set up GitHub - jwillemsen/daikin_onecta: Home Assistant Integration for devices supported by the Daikin Onecta App and I have it ‘working’ but nothing is showing up. I enabled the debug logs and got the below. So it seems that the api isn’t listing any devices?

Perhaps I did something wrong when creating the oauth client but I’m not sure what, any clues on how to debug this would be helpful.

2026-01-05 19:44:14.637 DEBUG (MainThread) [custom_components.daikin_onecta.daikin_api] Initialing Daikin Onecta API...
2026-01-05 19:44:14.638 INFO (MainThread) [custom_components.daikin_onecta.daikin_api] Daikin Onecta API initialized.
2026-01-05 19:44:14.638 DEBUG (MainThread) [homeassistant.helpers.config_entry_oauth2_flow] Sending token request to https://idp.onecta.daikineurope.com/v1/oidc/token
2026-01-05 19:44:15.958 INFO (MainThread) [custom_components.daikin_onecta.coordinator] Daikin coordinator initialized with 0:10:00 interval.
2026-01-05 19:44:15.961 DEBUG (MainThread) [custom_components.daikin_onecta.coordinator] Daikin coordinator start _async_update_data.
2026-01-05 19:44:15.961 INFO (MainThread) [custom_components.daikin_onecta.daikin_api] Request URL: /v1/gateway-devices
2026-01-05 19:44:15.961 INFO (MainThread) [custom_components.daikin_onecta.daikin_api] Request GET Options: None
2026-01-05 19:44:16.490 INFO (MainThread) [custom_components.daikin_onecta.daikin_api] Response status: 200 Text: [] Limit: {'minute': 0, 'day': 0, 'remaining_minutes': 0, 'remaining_day': 0, 'retry_after': 0, 'ratelimit_reset': 0}
2026-01-05 19:44:16.491 DEBUG (MainThread) [custom_components.daikin_onecta.coordinator] Daikin coordinator finished _async_update_data, next interval 0:10:00.
2026-01-05 19:44:16.491 DEBUG (MainThread) [custom_components.daikin_onecta.coordinator] Finished fetching daikin_onecta data in 0.530 seconds (success: True)

I did wonder if the login flow has changed recently, I’m using the SSO login.

When I look at the developer portal it says I have “No Products”, although the “Register for v1” button in the cloud API docs is disabled.

I just tried re-creating my application in the daikin could and same result.

2

Hi,

The same thing happened to me 2W ago.

You need to use the Onecta app to register your Altherma ASHP with your details and give permissions for remote access for your device to appear in the developer portal.

If this helps, :heart: this post!

3

I’m not sure that’s the problem here although I might have got in a similar mess some other way. I did register it via their portal at some point, I got an email confirming it. I reckon I’ve somehow got two logins and one of them is a dud perhaps but I’m confused as hell.