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

so!!!!!!!!
This morning the bypass valve from chewbacca123 was closed from 4 to 5 and
TADA, the return temperature now only rises after about 6 minutes. This means more heat is reaching the screed. The heat pump will now work more efficiently. The heating curve needs to be adjusted, I would initially try 27-22-0. Otherwise, it will get way too warm in the house
Here is the proof

[ATTACH alt="ÜV-Stufe5.jpg"]41275[/ATTACH]

Possibly more is possible if the bypass valve is closed from 5 to 6 or even completely.
again for comparison before:

[ATTACH alt="RL-Anstieg.jpg"]41277[/ATTACH]

Heating cycles are also longer in the first trend:

[ATTACH alt="ÜV-Stufe5-Heiztakte.jpg"]41278[/ATTACH]

Now courage for the next step!
The exciting question remains how the bathroom temperatures will develop. Through the previous measures, the flow rate could be increased from initially 1.5 l/min to 2.9 l/min.
I'm curious...

What do these three numbers actually mean? For example 27 22 0 Can every heating (control) be read out, or do you need some gadgets for that?

Can you read out any heating (control) system, or do you need some gadgets for that?