What flow temperatures are you currently running?

I didn't understand it. But I'll raise it and observe. So down, it's a negative value.

I didn’t understand it. But I’ll raise it and observe. So down, it is a negative value.

What do you want to achieve? Fewer cycles (compressor lifespan) or higher efficiency (power consumption)?

How I came up with this read in the forum if I now write the name I will get the next warning. But I’ll send you the link. But for understanding, if the water runs slower through the pipes, you have better heat output or efficiency. By the way, we tried getting a spread of 6k on my heating system. I just trust the professionals with that, by which I do not mean the heating installers.

I would be very careful there! Especially when operating with a heat pump. They run most efficiently the lower the temperatures you have. Likewise, a bigger delta T is more inefficient. A 6k spread is certainly not optimal. It is clear that at some point the electricity consumption of the circulation pump is greater than the savings from lowering the temperature. If the towel radiator runs all day, that is clear. Something like that is also not suitable for tempering the room. If needed, turning on a fan heater for 5 minutes has more of the desired effect.

Ideal both. But especially during the transition period, also longer bars.

No. The integral is reduced by the delta supply actual/return actual. According to your description, the integral would only be counted down once the floor was "recharged" again. But that already happens minutes after the compressor starts.

Okay, learned something new again, and in what context is a higher supply actual compared to a supply setpoint when at the same time there is a spread of 3-4 K between supply and return?

A spread means, conversely, a heat output; if I am outputting heat, then conversely the supply cannot rise higher than it actually should, right? Or is the spread too low? It is usually said that 3-5 K are optimal for a heat pump, isn't it?

Okay learned something new again, and in what context does a higher actual flow temperature compared to a target flow temperature relate when at the same time there is a spread of 3-4 K between the flow and return?

Sorry, I just reread what I wrote. :( Of course, it’s rubbish. Nothing about flow/return. Delta actual flow / target flow temperature is correct. Otherwise, with a spread of e.g. 6 K and EI -120 degrees min., the heat pump would only run for 20 minutes instead of 50-60 minutes.