Heating program screed - only one room will be warm

Hello, with us (Gasbrennwert, Vaillant) the heating program for the screed has been running for 4 days. You can slowly feel the warmth, but only in one room. Below at the heating circuit distributor, only the first pipe loop, which leads to the guest toilet, is getting warm and only there can you feel the underfloor heating. The other loops are cold, upstairs all are completely cold.

Does the heating / the program gradually switch all loops on or is the program not running properly?

Thank you very much for your answers ...

We had that too. It then turned out that the technician forgot to open the valves for the other heating circuits. It was a matter of a minute.

I thought so too ... can I turn them on myself or does the technician have to do it?

You can turn it on by yourself. However, I would still only do so in consultation with the technician, as it could be that he had a reason for allowing the other loops to remain closed.

And if not, then I would feel more comfortable if the heating engineer also knows that he made a mistake. Even just for possible warranty claims, in case any problems arise from the delayed heating, even if it’s only that follow-up work cannot be completed on time.

We had that too. It then turned out that the technician forgot to open the valves for the other heating circuits. It was a matter of one minute.

How did the technician pressurize the heating circuits if the valves were closed?

So, they simply forgot to open the other valves. That has now been done and the house is sweating away.