Viessmann Component

I’m running my 200-W for 16 years now, there has never been any firmware update. I would check what that new firmware is supposed to fix and if nothing relevant for you I would not touch it. To get more info check the Viessmann support forums or contact them directly.

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Good to know, thanks. 16 years…! I’ll be pleased if mine lasts that long. I have no reason to think it won’t, it’s a well-built piece of hardware.

I’m leaning that way with this update as well. If it ain’t broke, and whatnot. If I learned that HA would add a new “climate” entity for the boiler with this new firmware, that would probably push me to upgrade.

I would say thats normal. Seems like your night program does not have any target temperature set, that’s why it’s not shown during this time.

Hmm, but what is with the actual temperature of the water. Looking at the diagram it is just a interpolation of the temperature but not real values in my view.

I don’t think that’s an interpolation. That’s just the water cooling out in your water reservoir.

When the warm water is deactivated, the underlying API does not return any values even if the configured target temp is still valid.

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Hi all! I recently opened this feature request: Viessmann ViCare - Add Eco / Comfort modes because the water_heater (DHW) in the ViCare integration it’s not working as expected. The post has a lot of information, including some links, but I will resume it here:

The documentation of the ViCare integration explains that the water_heater has no on/off because it interferes with the heating circuit, and it seems this was true (the method to change the modes in the Viessmann API was the same for both). But since some time ago this was changed in the API, it has different methods to change the mode in the heating and in the DHW, so it seems that now it can be used.
I wrote here to see if someone knows if all boilers can use the new methods or only the new ones can, to give the information in the feature request to let this info to the developers (in this way the old method must be maintained or can be removed safelly, and this simplifies the changes).

This is more or less explained here Viessmann Climate Solutions Community - Viessmann Climate Solutions Community it seems that the new E3 devices use the new API (so it seems the old ones need the old methods) but I don’t know exactly what E3 devices imply.

Thanks!

EDIT: sorry, it seems the info was there… in the changelog of november 2022 it’s explained: https://documentation.viessmann.com/static/changelog it shows how to detect E3 devices and what methods to use with this devices. So it’s almost 2 years old the change.

Another thing I’ve observed, is that the the daily gas counter “resets” in GMT hour. It does not take into account the time zone. Is there a way to change that? I suppose that ignore this counters and make a manual custom one in Home Assistant will do the trick, but I want to know if there is a better way.

Hi, thank you for this helpful informations in this thread and another here in the HA community. First I have a Vitocal 200S heat pump and I can’t show the watertemperature in influxDB or Grafana but in HA I get all infos.

I have HA since one week and its all new terrain for me. But I can get the water temperature with “Helpers” the problem is the water temperature is no sensor and you can’t read data from “water_heater” to get data in C° . So I use “Helpers” and create a new sensor.

Go to helper and create a new helper and you get the info also in influx-grafana