Setting hot water temp no longer works

[CommanderROR9]

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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

I have an automation to set my hot water temp, but this no longer works as of today. Error message below.

Logs

Fehler: 404, message='Not Found', url='https://api.vaillant-group.com/service-connected-control/end-user-app-api/v1/systems/66916eb8-69ff-42c4-b053-6f42bfe8877f/tli/domestic-hot-water/255/temperature

[signalkraft]

Could you attach full debug logs, please? The same exact query still works fine on my end, so I need more info.

[CommanderROR9]

Thanks for your reply. The problem resolved itself after a few days without any changes on my end, so maybe it was a Vaillant issue.

[jstott1070]

I suspect there are quite a few changes happening to the API right now, i updated the app yesterday and noticed that the hot water boost function didnt actually do anything to the heatpump despite the app indicating it was active. I would bet this is connected to your observation also.

[CommanderROR9]

There are definitely changes, the myVaillant integration has been failing constantly for me over the last few days... any time I tried to set a temperature... But the Hot Water Boost in the app was always useless for me. It only works if the hysteresis for hot water has been reached.

jstott1070 @.***> schrieb am Mi., 23. Okt. 2024, 11:12:

I suspect there are quite a few changes happening to the API right now, i updated the app yesterday and noticed that the hot water boost function didnt actually do anything to the heatpump despite the app indicating it was active. I would bet this is connected to your observation also.

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[boelle]

@CommanderROR9 so this is still an issue?

[CommanderROR9]

I can't really say. I stopped using the myVaillant App and Integration a long time ago since the Vaillant API and Servers were just too unreliable. I have been reading and sending data to the heat pump with an ebusd adapter since. It's not exactly straightforward to set up and also not 100% reliable, but it's good enough for my usecase and has been doing the job for Months now without constant babysitting from my end.

[boelle]

well i never had an issue with hot water,

well yes there where a problem if the heat pump was set to 52C

i use an automation together with the nordpool integration so i can ask for a cylinder boost when electricity is cheapest

if i set the heatpump to 52 and say the water is 45 then it would not heat. and the household are 3 adults so we need to have it go to 52, my fix was to set it to 62 and have HA stop it at 52

but yes there was a period where things failed every now and then, sometimes for a day at a time

[boelle]

@signalkraft poke