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My 'summer' / 'winter' mode is, well, the same

As my system is entirely temperature driven, it simply doesn't kick in on higher temperatures. I never understood the need for different summer / winter modes...

I have adjusted a bit the setting of WHS2 - several times I woke up in the middle of the night and heard the heating running, although all radiators should be off - they looked like, but probably they were more than 1% open - so I have changed the setting to switch on from 5% on and it's working pe...

(Never could find a solution, but it's getting annoying... How can you see a CAL alarm on a HM-CC-RT-DN on the CCU2? Nothing seems to work, absolutely nothing. Replies in German are fine...)

Ah okay. Already found that one. Have some other things to do first, but I was thinking about getting one of his WIzzi thingies just to play with it. Or build something myself. I bought a cheap but reasonable air quality meter from AliExpress and took it apart, just to see what made it tick. Breakdo...

No, sorry, just used the internal tools. I'm pretty sure it is a bug (as it is fairly logical to explain and reproducable).

I was wondering if someone else noticed the same thing, or if my own logic was faulty

I have one Homematic IP humidity / temperature sensor in my bathroom. I *think* I understand what is going on, but I'm not entirely sure. When I look at the graph I notice there is often little bit of data missing at the end of the graph, like this: 1.jpg The yellow line is humidity as reported by t...

Factory reset perhaps?

No, I actually was thinking of a Co2 sensor :D They shouldn't be that hard to develop / adapt. You can buy a reasonable unit for less than a 100 euros, including display, Co2 PM2.5 and PM10. Accuracy is probably not very good, but some indication is better than none I guess... (Got one standing on m...

Previously I was tempted to think it's a bug in the CCU2... And I'm beginning to think so again. Whenever I use any of the 'error checking' fields like sticking valves, low battery etc. strange and unpredictable things happen. And in spite of looking around I haven't found any message confirming the...

(I crossposted this in the German part of the forum, in the hope someone could point out my error to me.) I am utterly stumped. The next program simply doesn't run, but why? Is it a bug in the CCU2 with complex conditions, or is the problem as usual between chair and keyboard? What I'm trying, in ps...