Air-water heat pump current consumption and data

Then there are two possibilities: The sensors of the heat pump are malfunctioning, or you are losing a significant amount of heat on the way from the heat pump to the [HKV].

Is the heat pump located in a heated room and are all pipes to the distributors insulated?

Is the heat pump located in a heated room and are all the pipes to the distributors insulated?

The heat pump is located in the unheated technical basement, but all the pipes to the HKV are insulated. What is not insulated are the copper pipes in the heat pump, which I will insulate as well as possible. The supply line loses nothing and the return line is supposed to lose between 2 and 8 degrees? How is that supposed to work? And then with this temperature difference.

Whether heat is lost and how cannot be assessed from the outside.

But the measurements on the HKV do confirm that the problem occurs in the area of the heat pump -> HKV.

Personally, I would still try to measure the flow and return of the heat pump and compare them with the specifications of the heat pump.

Then it could be narrowed down to defective sensors or actual heat loss.

At the heat pump in the menu supply 24.9, return 23.0
IR thermometer on the sleeve of the sensor of the heat pump at the supply 24.7 return 24.6

I have already measured at the heat pump here.

These fluctuations in the return temperature curve are not normal. The difference in return temperature between the sensor and IR measurement also requires clarification. Is it similar during the heating cycle? If yes, I would check the sensor.