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

I have to chime in here and say that certainly deserves a pizza-sized cookie and a whole swarm of diligent little bees. Incredible what kind of help is being provided here.

Absolutely! Top advice, really a huge thank you

Good move, the circulation pump should run as little as possible. So, for example, in the evening when the children are showering/bathing. As briefly as possible, but at least once a day!

Honestly, what you have helped me with here is absolutely amazing. No installer would have explained it to me like this. I now understand our heating and the whole system because of this. Until two weeks ago, I had no idea, big thank you.
To be honest, I would like to send you a small payment via PayPal for this, what is your address?

Let it be, I also enjoy it! I hope that many fellow readers will benefit as well. And you are not done yet. After New Year, you have to dare to tackle the bypass valve to get the system running smoothly. I can’t help with the bathroom though, unfortunately you are dependent on the electric towel radiator...

Also, thank you from me for following along with interest.

Let it be, I enjoy it too!
I hope many readers also benefit. And you’re not done yet. After New Year’s, you have to dare to tackle the bypass valve to really get the system running smoothly. I can’t help with the bathroom, unfortunately you’re dependent on the electric towel radiator...

honestly, you’re doing such a great job, thank you so much for that.
you’ve helped me a lot with why it’s not getting warmer in the bathroom, that’s not your fault. (This morning at 8 a.m. 20.7 degrees).
but I find it strange, before the bathroom was always quite warm, so something is possible there. But back then the heating curve was 40 20 0 and the individual room controllers weren’t open. During that time we had many compressor starts. I’m staying on it and experimenting. I have now set the heating curve as follows: 29.5 - 22.5 - 0. Let’s see how that affects things.
according to the heating engineer, most meters are installed in the bathroom. In the new year I will probably get the documentation then.
if we had at least 21.3° in the bathroom, that would be enough.
I wish you and everyone else here a Merry Christmas, nice relaxing days and lots of presents

Let it be, I also enjoy this!
I hope many readers benefit as well. And you’re not done yet. After New Year, you have to dare to adjust the bypass valve to really get the system running smoothly. I can’t help with the bathroom, unfortunately you’re dependent on the electric towel warmer...

Good morning, my compressor starts have decreased significantly, while it was on average every 14 minutes two weeks ago, it looks much better now, data from 12/23 to 12/25:


It can certainly only get better by modifying the bypass valve, but I don’t dare to touch that yet. The heating engineer should do that.

kWh consumption in the last 24 hours is still 20 though. I thought it would decrease due to the water setting, what could be the reason? Times for water are 6-10 am, 12-2 pm, 5-10 pm.

Regarding temperatures, hallway still at 22.8°, even though I reduced the flow to 1 at the top and 0.75 at the bottom. The children’s room is too warm at 22.4°, when the little rascal starts sleeping there next year. There I have volume 0.75. Reduce further?
Large bathroom was at 21.0°. Now I was able to set full load volume to 2.9-3.0, maybe something will change by tomorrow. 21.3° would be great! If not, we’ll have to live with it.

Best regards