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

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So, here is the data from just now:

Then you have to measure the return temperatures at the HKV with a small IR thermometer. With short circuits, you have a higher return temperature than with long circuits. However, you must release the maximum possible flow on all heating circuits and the bypass valve should be closed. Then you will not only find the short circuits, but you will also see on the top meters the maximum flow your hydraulics provide and whether it is sufficient to reach the nominal volume flow of your heat pump.
So if the system is still cycling after yesterday's visit and it is not getting warm, you have to do the following.
1. Open all! circuits to the maximum and close the bypass valve and measure the total flow.
(The bedroom can be throttled again later when the hydraulic balancing is correct, the heating curve is correct, and the heat pump no longer cycles). If there is too much flow, the power of the circulating pump can be reduced.
2. Gradually equalize circuits with a rapid temperature increase in the return flow or higher return temperature until all have approximately the same return temperature. Then you have hydraulically balanced the underfloor heating. The heat pump should then no longer cycle.
3. Adjust the heating curve until the temperature in the house is correct.
4. Now individual circuits can be throttled to lower the temperature in the corresponding room (bedroom). Always keep an eye on the total flow; the minimum volume flow must be maintained.
5. Done for now, only fine-tuning for the following winters.

If you can still shorten the heating circuit lengths, all of this becomes easier...

Bathrooms are almost always critical when a higher temperature is desired. Adding more heating surface afterward is not possible. So you have to decide. Either an electric radiator for demand-oriented short-term supplementary heating or raising the heating curve with a reduction in efficiency. In the long term, the electric radiator is usually the more economical option. But maybe it fits in your bathrooms.
Greetings from Hamburg

If the heat pump is running well, such a picture should result. The compressor starts and runs, only interrupted by defrosting processes, in heating mode for several hours, the return flow slowly rises. If TRL is above TRLsoll plus hysteresis, the compressor stops and restarts when TRL falls below TRLsoll minus hysteresis. Domestic hot water is produced once a day.

Compressor is VD1 HUP is the heating circulation pump (also runs when the compressor is off to sense the screed temperature) TRLsoll is the return flow setpoint TRL is the actual return flow BUP is the domestic hot water pump

Sorry for the poor quality, it couldn't be done better quickly

Why is your lead not visible?

I have hidden that...
It's already confusing enough

Could you try to visualize the curves with Opendta and then upload the image here? I am interested in the behavior of the return flow during the heating phase as well as the runtime per compressor start. Regards