Honeywell Evohome Integration


I’m new on HomeAssistant and I’m trying to switch to this platform coming from OpenHab.
I’m trying to integrate my Honeywell Evohome system, I red the documentation here and it seems to be very easy. However I’m unable to make this system running in my environment.

My config.yaml:

    username: email_address
    password: password
    scan_interval: 300

The password has been verified and I can access to the Honeywell portal without any issue.

The errors I see in logs are:

Logger: homeassistant.setup
First occurred: 0:48:04 (1 occurrences)
Last logged: 0:48:04

Setup failed for evohome: Integration failed to initialize.


Logger: homeassistant.components.evohome
Source: components/evohome/
Integration: evohome (documentation, issues)
First occurred: 0:48:04 (1 occurrences)
Last logged: 0:48:04

Failed to authenticate with the vendor's server. Check your network and the vendor's service status page. Also check that your username and password are correct. Message is: Unable to obtain an Access Token, hint: {"error":"invalid_grant"}

My setup is based on Hassbian 32bit (latest version) on Raspberry PI4

Please can somebody try to help me? Or can give me some ideas on how to troubleshoot better this issue (I’m new on HA platform and I don’t know every aspects).

Thanks a lot