We did it! The binding will be included in the next milestone. A huge thank you to @STSC @opus @cweitkamp and @sven1234 for your support. The binding wouldn’t have gotten this far without you.
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That’s great. Thank you very much for all the time you spent into the development. 
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Every hour I get the following error message:
API IOException: Unable to execute GET: java.util.concurrent.ExecutionException: org.eclipse.jetty.client.HttpResponseException: HTTP protocol violation: Authentication challenge without WWW-Authenticate header
Do I need to change some settings?
@Oliver2 I tested it on my system and couldn’t reproduce the error. Which version do you have installed?
Good point. I didn’t realised there is a newer version available. With the latest binding release these errors are gone.
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Hi @rogrun,
I finally migrated to your new add-on. Unfortunately some Channels for power consumption seem to deliver no values to the Items. Power consumption heating is working, Power consumption water and total are not working. Just tested values for today. Might be the same for yesterday, and so on.
Maybe my power consumption for water is too low to be displayed.
Can you help? Thank you in advance.
Hi @cweitkamp yes this is possible. Can you please send me the API response (in TRACE mode) via PM.
I’d like to analyse the original values from the API
Hi @rogrun,
i have similar problems with Power channels like @cweitkamp.
Things i discovered in the past 2 weeks during the development if a widget for semanticHome:
Power consumption items dhw-, heating- and total- this-month aren’t aren’t from december but from november.
Analog last-month are from oktober so at least the naming of the channels is misleading.
I have no clue who is responsible the binding or viessmann for delivering this data.
From my insight up till now this seem to be like that for all power consumption channels.
So having no data for this-month that i am able to represent in a chart i tried to build the data for the aktual month with a rule emptiing an additional item at first of month and than adding every day at 00:01 the data from yesterday to those items.
The problem that arose is the most of the time all day channels don’t update as they should.
To illustrate i added power consumption dhw yesterdays as chart for the past month so you can see that the data the channel provides isn’t usable.
Last week i migrated my installation from the old style with bridge to the new account style.
After migration at least the channel heating.dhw.scaldProtection (Verbrühungsschutz) isn’t available anymore although the viessmann developer portal still list this data-point.
If i can help with logs to get this sorted out just tell me what i shall provide.
Thanks for this otherwise great binding.
Edit:
Could be helpful to know what kind of device 
Heatpump Vitocal 250A
Hi @Sysiphus These four channels contains the RAW data in an array from viessmann API
For example:
The first value (0.72) is the current consumption for today und the next (0.754) for yesterday and so on..
On my system, the values match those in the ViCare app. I think there is something wrong with the provided data from the viessmann API.
For further analysis please send me your log in TRACE mode via PM. I need the complete API Response wich starts here:
I will take a look at your log and search for the cause.