Daikin "ZENA" FTXJ35TVMAW/RXJ35TVMA detected but "Failed to connect"

[sentience]

The problem

I have a newly-installed Daikin "ZENA" FTXJ35TVMAW/RXJ35TVMA air conditioner, running WiFi module firmware version 1.16.0. It's connected to my home WiFi with an IP address reservation. Home Assistant auto-detects the device and offers to set it up with the Daikin integration.

When I click Configure, I get a dialog prompting for a Host, API Key, and Password. The Host is pre-filled with the correct local network IP address for the device.

When I click submit, the dialog displays an error: "Failed to connect", and the Host field is cleared.

Unfortunately I don't know the model number of my unit's integrated WiFi module, nor do I know how to determine what it is.

What version of Home Assistant Core has the issue?

core-2023.9.3

What was the last working version of Home Assistant Core?

No response

What type of installation are you running?

Home Assistant Container

Integration causing the issue

daikin

Link to integration documentation on our website

https://www.home-assistant.io/integrations/daikin

Diagnostics information

No response

Example YAML snippet

No response

Anything in the logs that might be useful for us?

No response

Additional information

No response

[home-assistant[bot]]

Hey there @fredrike, mind taking a look at this issue as it has been labeled with an integration (daikin) you are listed as a code owner for? Thanks!

Code owner commands

Code owners of `daikin` can trigger bot actions by commenting: - `@home-assistant close` Closes the issue. - `@home-assistant rename Awesome new title` Renames the issue. - `@home-assistant reopen` Reopen the issue. - `@home-assistant unassign daikin` Removes the current integration label and assignees on the issue, add the integration domain after the command. - `@home-assistant add-label needs-more-information` Add a label (needs-more-information, problem in dependency, problem in custom component) to the issue. - `@home-assistant remove-label needs-more-information` Remove a label (needs-more-information, problem in dependency, problem in custom component) on the issue.

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[robinhood-code]

API key = the SSID key on the sticker For password leave it blank

[sentience]

Thanks @robinhood-code. When I enter the "KEY" from the sticker (the password for the unit's WiFi network), I get a progress spinner for about a minute and then the authentication modal refreshes with "Unknown error occurred". But if I ignore this and refresh Home Assistant, it turns out the device was added successfully and is showing a "Failed to set up" error. From there, if I Reload the integration, it loads successfully and the device seems to operate correctly.

This is now working for me, but that setup process definitely has some bumps in it!