Air-water heat pump current consumption and data

But the heater guy hasn't exactly done himself any favors so far (strictly professionally - he seems to be making an effort, after all), has he? I claim he simply doesn't know any better and won't fix it anymore. Didn't he cause the whole messed-up installation in the first place? Or was that someone else?

Hmm, the little spikes in the second picture are probably the pump that occasionally runs briefly to check the return flow. When my pump doesn't heat, I also always have something like that, the UWP then starts up briefly for a few minutes. In the first picture, I also suspect that the sensor directly at the end of the heating phase just measures some nonsense again. I was told in another forum that I can completely ignore this.

The heating technician, so far (purely professionally – he seems to be making an effort) has not exactly distinguished himself, has he? I claim he simply doesn't know any better and won't fix it anymore. Didn't he cause the whole messed-up installation in the first place? Or was that someone else?

Sorry, I confused Zaba and Alessandro. Please just ignore.

Hmm, the small jitters in the second picture are probably the pump that briefly starts up from time to time to check the return flow. When my pump isn't heating, I always have that too; the UWP then kicks in for a few minutes briefly. In the first picture, I also suspect that the sensor measures nonsense again right at the end of the heating cycle.

I was told in another forum that I can completely ignore this.

And that's how it is permanently, with the nonsense measurements. With a return flow controlled heat pump, that's a big problem because if it measures 25 degrees but it’s actually 31 degrees, the heat pump has run for 5 hours for nothing since it should have stopped at 27 degrees return flow.

But when it comes to heating, it looks good, doesn't it, or am I missing something?

But when heating, it looks good, or am I missing something?

The heat pump does not run smoothly due to the fluctuations in the return temperature. Up to 8K differential in standby and 15K differential in heating mode is not good at all.

The consequence of these high differentials is simply that the heat pump starts up far too often, pauses briefly, and thus the temperature keeps escalating. Recently, I had almost 25 degrees without sun in the living room due to the short heating cycles at 25/20.5/0. That is basically not possible.