"400 Bad Request" error when fetching ecomXstatXtotalXclear from AdoraWash V6000 in standby mode

[OliverSpiess]

Problem
The V-ZUG integration throws a "400 Bad Request" error when trying to fetch configuration data from an AdoraWash V6000 washing machine that is in standby mode.

Environment

• Home Assistant Version: 2025.09.4
• V-ZUG Integration Version: v0.4.5
• Device: AdoraWash V6000
• Device IP: 10.0.0.7

Error Log

Logger: custom_components.vzug.shared
Source: helpers/update_coordinator.py:392
Integration: V-ZUG
First occurred: [timestamp]

Unexpected error fetching config data
Traceback (most recent call last):
  File "/usr/src/homeassistant/homeassistant/helpers/update_coordinator.py", line 392, in _async_refresh
    self.data = await self._async_update_data()
  File "/usr/src/homeassistant/homeassistant/helpers/update_coordinator.py", line 293, in _async_update_data
    return await self.update_method()
  File "/config/custom_components/vzug/shared.py", line 137, in _fetch_config
    return await self.client.aggregate_config()
  File "/config/custom_components/vzug/api/__init__.py", line 481, in aggregate_config
    await asyncio.gather(
        *(handle_command_key(command_key) for command_key in command_keys)
    )
  File "/config/custom_components/vzug/api/__init__.py", line 478, in handle_command_key
    command_raw = await self.get_command(command_key)
  File "/config/custom_components/vzug/api/__init__.py", line 567, in get_command
    return await self._command(
        "hh", command="getCommand", params={"value": value}, expected_type=dict
    )
  File "/config/custom_components/vzug/api/__init__.py", line 343, in _command
    return await once()
  File "/config/custom_components/vzug/api/__init__.py", line 299, in once
    resp.raise_for_status()
httpx.HTTPStatusError: Client error '400 Bad Request' for url 'http://10.0.0.7/hh?value=ecomXstatXtotalXclear&command=getCommand&_=1759308791'
For more information check: https://developer.mozilla.org/en-US/docs/Web/HTTP/Status/400

Steps to Reproduce

1. AdoraWash V6000 goes into deep standby mode (WLAN still connected but device in low-power state)
2. Home Assistant starts or integration tries to fetch config data
3. Error occurs when trying to retrieve ecomXstatXtotalXclear command

Expected Behavior
The integration should gracefully handle devices in standby mode, either by:

• Skipping non-essential commands when device is in standby
• Implementing proper error handling for 400 responses
• Retrying the command later when device becomes fully active

Actual Behavior
The integration throws an unhandled HTTP 400 error, causing error logs and delayed startup warnings.

Additional Context

• The device works perfectly fine once it's active (door opened, program started)
• Other V-ZUG devices (Tumbler, Dishwasher, Oven MSLQ) don't show this issue
• The AdoraWash V6000 doesn't have a "WLAN always active in standby" setting
• This appears to be specific to the eco statistics command

Suggested Solution
Add error handling for commands that may not be available in standby mode, or mark these commands as optional/non-critical so they don't cause errors during initialization.

[david-aggeler]

@OliverSpiess ,

My devices behave differently.

I've now made a binary version of the API response collector. https://github.com/siku2/hass-vzug/tree/users/david/compile-collector/dist.

Instructions: https://github.com/siku2/hass-vzug/blob/users/david/compile-collector/CONTRIBUTING.md#collect-data-from-your-v-zug-device

1st run it with the device in standy, and 2nd when online. Create two different profiles to refelect the different responses.