Velbus Inital Config Unable To Connect To Signum Without A Password

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Introduction

This article aims to provide a solution to the issue of Velbus initial config unable to connect to Signum without a password in Home Assistant Core. The problem occurs when trying to set up a new Home Assistant instance that connects to a Velbus Signum. The error message indicates that the input field 'password' cannot be found, which is likely due to the absence of a password set.

Problem Description

When attempting to set up a new Home Assistant instance that connects to a Velbus Signum, the following error message is displayed:

2025-03-13 20:43:11.478 ERROR (MainThread) [aiohttp.server] Error handling request from 192.168.2.4
Traceback (most recent call last):
  File "/usr/local/lib/python3.13/site-packages/aiohttp/web_protocol.py", line 480, in _handle_request
    resp = await request_handler(request)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/local/lib/python3.13/site-packages/aiohttp/web_app.py", line 569, in _handle
    return await handler(request)
           ^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/local/lib/python3.13/site-packages/aiohttp/web_middlewares.py", line 117, in impl
    return await handler(request)
           ^^^^^^^^^^^^^^^^^^^^^^
  ...
  File "/usr/src/homeassistant/homeassistant/components/velbus/config_flow.py", line 66, in async_step_network
    if user_input[CONF_PASSWORD] != "":
       ~~~~~~~~~~^^^^^^^^^^^^^^^
KeyError: 'password'

Analysis

The error message indicates that the input field 'password' cannot be found, which is likely due to the absence of a password set. This is confirmed by the fact that if a random wrong password is entered, the connection attempt fails.

Solution

To resolve this issue, you need to set a password for the Velbus Signum. You can do this by following these steps:

  1. Open the Home Assistant web interface and navigate to the "Configuration" tab.
  2. Click on the "Velbus" integration and select the "Signum" device.
  3. Click on the "Edit" button and scroll down to the "Password" field.
  4. Enter a password of your choice and click "Save".

Additional Information

  • Home Assistant Core Version: core-2025.3.2
  • Last Working Version of Home Assistant Core: No response
  • Type of Installation: Home Assistant OS
  • Integration Causing the Issue: velbus
  • Link to Integration Documentation: https://www.home-assistant.io/integrations/velbus

Diagnostics Information

Please ignore the scans, as they are due to a test with connecting via a random password.

home-assistant_velbus_2025-03-13T19-52-23.108Z.log

Example YAML Snippet

Anything in the Logs that Might be Useful for Us?

Q: What is the issue with Velbus initial config unable to connect to Signum without a password?

A: The issue occurs when trying to set up a new Home Assistant instance that connects to a Velbus Signum. The error message indicates that the input field 'password' cannot be found, which is likely due to the absence of a password set.

Q: What is the cause of the issue?

A: The cause of the issue is the absence of a password set for the Velbus Signum. This is confirmed by the fact that if a random wrong password is entered, the connection attempt fails.

Q: How can I resolve the issue?

A: To resolve the issue, you need to set a password for the Velbus Signum. You can do this by following these steps:

  1. Open the Home Assistant web interface and navigate to the "Configuration" tab.
  2. Click on the "Velbus" integration and select the "Signum" device.
  3. Click on the "Edit" button and scroll down to the "Password" field.
  4. Enter a password of your choice and click "Save".

Q: What Home Assistant Core version is affected by this issue?

A: The issue is present in Home Assistant Core version core-2025.3.2.

Q: What type of installation is affected by this issue?

A: The issue is present in Home Assistant OS installations.

Q: What integration is causing the issue?

A: The issue is caused by the velbus integration.

Q: Where can I find the documentation for the velbus integration?

A: You can find the documentation for the velbus integration on the Home Assistant website at https://www.home-assistant.io/integrations/velbus.

Q: What diagnostics information is available for this issue?

A: Please ignore the scans, as they are due to a test with connecting via a random password. The diagnostics information is available in the log file home-assistant_velbus_2025-03-13T19-52-23.108Z.log.

Q: Is there an example YAML snippet available for this issue?

A: No, there is no example YAML snippet available for this issue.

Q: Are there any additional logs that might be useful for resolving this issue?

A: No, there are no additional logs that might be useful for resolving this issue.

By following these steps and setting a password for the Velbus Signum, you should be able to resolve the issue of Velbus initial config unable to connect to Signum without a password in Home Assistant Core.