ERR are installed, they are all set to the "point" in my place and are not fully turned up. Room temperature in all rooms is about 19 degrees. Is it normal that the heating runs constantly (hums)? Is there a way to read out this heating system with a USB stick?
I was helped very well here in the forum, you have to either remove all the individual room controllers or set them all to full power, that is, level 6 of 6 – or whatever your highest level is. Then set your heating curve, for example to 29 - 22 - 0. Then wait 24 hours and see what happens, how the temperatures develop in the rooms. It will probably get quite warm at first! We then had 23° in the bedroom, but we had to endure that for a night or two. Then you see how the individual rooms react and what temperatures prevail. After that you can deal with the volume flow controllers on your floors. With these, you can regulate how many liters of water flow per minute in the individual rooms. The more liters, the warmer the rooms. For example, I throttled our bedroom to 0.25 l/min, but the bathroom to 3 l/min, because we want it as warm as possible there. Living room fully on. It took me three or four weeks until it was optimal for us. But for that, our system now runs almost flawlessly. At this point, thanks again to everyone here in the forum, you guys are really great. USB port, no idea, just call the company your system is from. It is also important that you best do not make heating adjustments when it is warmer than 5°. I hope that was all correct so far, but the experts are also here and are reading along.