Unexpected error fetching myVAILLANT data

[Krzysztonek]

Before submitting a new issue

• [x] I redownloaded the latest release and restarted Home Assistant
• [x] I've checked known issues
• [x] I've enabled debug logs and attached the relevant logs to this ticket

Problem description

Unexpected error fetching myVAILLANT data

Logs

Traceback (most recent call last):
  File "/usr/src/homeassistant/homeassistant/helpers/update_coordinator.py", line 354, in _async_refresh
    self.data = await self._async_update_data()
                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/config/custom_components/mypyllant/coordinator.py", line 177, in _async_update_data
    data = [
           ^
  File "/usr/local/lib/python3.12/site-packages/myPyllant/api.py", line 358, in get_systems
    system = System.from_api(
             ^^^^^^^^^^^^^^^^
  File "/usr/local/lib/python3.12/site-packages/myPyllant/models.py", line 954, in from_api
    DomesticHotWater.from_api(
  File "/usr/local/lib/python3.12/site-packages/myPyllant/models.py", line 575, in from_api
    data["current_special_function"] = DHWCurrentSpecialFunctionVRC700(
                                       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/local/lib/python3.12/enum.py", line 757, in __call__
    return cls.__new__(cls, value)
           ^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/local/lib/python3.12/enum.py", line 1171, in __new__
    raise ve_exc
ValueError: 'ONE_DAY_BANK_HOLIDAY' is not a valid DHWCurrentSpecialFunctionVRC700

[dcw77]

I am also experiencing the exact same issue.

[electricfire]

I have the same issue as well just different variables.

[rhgiter]

same problem

[aurelieng2009]

Same Here

[Seliaks65]

Same here - all entities became unavailable since 7.16am UK time this morning. myVaillant App is still working fine.

[Xerbo]

2024-10-09 07:17:21.644 ERROR (MainThread) [custom_components.mypyllant.coordinator] Error fetching myVAILLANT data: 404, message='Not Found', url='https://api.vaillant-group.com/service-connected-control/end-user-app-api/v1/systems/____/tli'
2024-10-09 07:23:22.242 ERROR (MainThread) [custom_components.mypyllant.coordinator] Unexpected error fetching myVAILLANT data
Traceback (most recent call last):
  File "/usr/src/homeassistant/homeassistant/helpers/update_coordinator.py", line 354, in _async_refresh
    self.data = await self._async_update_data()
                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/config/custom_components/mypyllant/coordinator.py", line 177, in _async_update_data
    data = [
           ^
  File "/usr/local/lib/python3.12/site-packages/myPyllant/api.py", line 358, in get_systems
    system = System.from_api(
             ^^^^^^^^^^^^^^^^
  File "/usr/local/lib/python3.12/site-packages/myPyllant/models.py", line 944, in from_api
    Zone.from_api(
  File "/usr/local/lib/python3.12/site-packages/myPyllant/models.py", line 430, in from_api
    data["cooling"] = ZoneCooling.from_api(
                      ^^^^^^^^^^^^^^^^^^^^^
  File "/usr/local/lib/python3.12/site-packages/myPyllant/models.py", line 326, in from_api
    **data["time_program_cooling"]
      ~~~~^^^^^^^^^^^^^^^^^^^^^^^^
KeyError: 'time_program_cooling'

Seemingly same here but with a slightly different error

[jan666]

KeyError: 'time_program_cooling'

Seemingly same here but with a slightly different error

same error here. Looks like it started today at 08:30

[ecranbleu27]

Same here. Maybe an api issue on Vaillant side… both app and thermostats are up and running.

[nakedfoot]

Exactly the same here.

[dardennejf]

The same here

[Merseybear]

I'll join the list too!

[mgiesl2s]

Me too

[R1200G]

Same here since 08:15..

[Richardstables]

me too

[lecocqe]

same here since 8:16 CET but official phone app is starting but if i click on 1 VR50, i get "unknown error, please try again later"

[jstott1070]

Ditto - looks to me like a possible change to the API as MyVailliant App is still functioning as expected today

[lecocqe]

now app is back. but intregation not yet

[hkcrainer]

Same issue here

[h4wk1234]

same here :( app is working fine thow.

[lecocqe]

the most strange is that i could do "call service" test data

[sgbossinga]

Since 8:16 no more data (Netherlands)

[grahamsparrow-8451]

I also have the same problem. Interestingly, at the same time, Home Assistant recognised MyVaillant Connect Gateway as a HomeKit device. Could be a coincidence, since I also update Home Assistant yesteday.

[ecranbleu27]

Does someone already try to contact [API-support@vaillant-group,com] ?

[MSGH11]

Same here

[Voyager08]

same here...

[Cameleon99]

Ditto, same errors here, app still working fine.

[Acey-yo]

Push...same

[Shortykiller]

Same problem here i DK 08:17:06

[nady2804]

Same issue from my side no Data i deinstall install the latest vesion again. NO Data can grab. Android App is already working...

[Cameleon99]

Paging @signalkraft as this seems pretty major as this integration goes. Guessing Vaillant has changed some data on their side.

I can also call the service/action - Generate Test Data - and it returns what looks to be the correct data, I assume parsing it is failing somewhere now?