Ice formation brine pipe heat pump

Exactly through my instructions, a source of error is excluded. The installers seem to have no idea.

I took a look inside the heating circuit distributor; normally, these markings in the tubes are at the numbers according to how they were set.

Now I noticed that when the system is not running, all the tubes are closed, see image 2—is that normal?

I also took a few more pictures of the cooling circuit in operation; can you see anything here?

No, that is not normal, the water is standing in the return flow and no wonder the switching hysteresis is reached so often. Does the pump run continuously? (in the overview circle on the left side)

the water is standing in the return line there

As a complete layman, the question: Where exactly do you see that?

As a complete layman the question: Where exactly do you see that?

Well, if the valve is closed, nothing moves in the circuit anymore. That means the water may cool down between the HKV and the heater, even though the pipes in the room might be exposed to sunlight and the water there is still relatively warm. When the pump switches on, the warm water comes from the underfloor heating and the heater switches off again at the same time. Since I don’t have a return flow controlled heater, I can’t say how other heaters do it.

Pump is running, I think it was because it was just producing hot water, then the circulation of the underfloor heating switches off. But I didn’t know that these small floats always all rise when the pump is off... Learned something new again.

I talked to the company today, they explained the Tichelmann system to me again. That they have always done it that way and have had good experiences with it. They only connect the power after 4 drillings in parallel because it costs more, of course. At the moment, they still don't know remotely where the problem lies, because according to the technician all values were great after the last flushing 2 weeks ago.

In any case, we are supposed to keep an eye on the temperatures and icing so that the probe doesn’t freeze too much. If necessary, just switch to the heating rod.

On 12.10, the technician wants to have a look together with the boss, well, I’m curious if we’ll make progress then. You have already helped me a lot, now I also have a little bit of background information. After I told them about the cycling and operating hours, they finally registered it and woke up.

They wanted to tell my wife on the phone that it is normal for condensation to form on the pipes because we have such a high humidity and that it just freezes...