Underfloor heating air-water heat pump. House too warm when the sun shines

The fact of being "left alone" is unfortunately true. However, this is mainly because the heating engineer usually does not have the documents from the energy consultant at 99% of the time during the offer and installation, since the energy certificate is only done much later or the heat pump, as in my case, is preferably operated without [KG]. No one dares to omit ERRs either, and so one thing leads to another. The thermal balancing including setting the comfort temperature can only be done by the client anyway.

Basically, everything can be corrected except an oversized heat pump and too few or incorrectly installed heating circuits.

It is crazy that people are sold a heat pump as a cure for CO2, but with the settings they are left on their own and the high consumption as well. But no problem, after 10 years they can buy a new one. Or replace the compressor for expensive money.

That really annoys me too. You are forced to build super-insulated houses and still burn coal power endlessly. But our politics currently shows in all areas what really disastrous mismanagement looks like, I only have to mention Corona...

It is crazy, people are sold a heat pump as a cure for CO2, but they are left alone with the settings and the high consumption as well. But no problem, after 10 years they can buy a new one. Or replace the compressor for a lot of money.

That's exactly how it is. I was also shocked at how little our heating technician informed us. Without this forum, we would be totally lost.

Short update on the behavior of my heat pump, after readjusting the settings with the help of Daniel-SP I have now been able to halve the compressor starts from 40 to 20 in 48 hours, 10 per day.
This is already very satisfactory, especially because it is much colder now than a few days ago. Last night -7°
the pump now runs for much longer stretches. Great!
My heating curve is at 29-22-0 and makes the rooms comfortably warm, even in the bathroom we managed to get 21°. We'll have to be satisfied with that

I was able to get the short cycling under control by turning down the compressor power. I have about 3-6 cycles per day. And I am working with 100L buffer and ERR :p :eek: What I unfortunately cannot classify is the daily consumption. At AT=-4° and WP=4.8-5.2kW for a 200sqm house, it is about 25-30kWh. Is that normal?

So ours is totally escalating right now. At minus 8 degrees, we need 38 kWh of electricity daily. The unit has now automatically reduced the hot water from 48 to 44 degrees. It can’t manage more at the outside temperature.

Sometimes I really long for the gas heating back, especially in winter :(