Air-water heat pump current consumption and data

Is this the last hour now? That would be a COP of 4.

Do you actually have constant faults? Just today I had two defrost errors again.

No, I have never had any faults until now. The only thing I had at the beginning of December was that the underfloor heating had a pressure loss. An inexplicable 20 liters had to be refilled. No idea where they went.

I'll put it this way, I don't know what to make of the numbers after the heat pump has been running so poorly in the last few weeks. halmi has noticed it too.

15.6 kWh in 2 hours. Now off again after 2 hours as the return flow target + 2K has been reached.

EDIT: Now hot water has started with 2.5 kW.
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We currently have the same AT, the same supply temperature, but a return temperature of 28 degrees and a return setpoint of 27 degrees. It's strange that we have to run a 3-degree higher RT setpoint for the same room temperatures. I can only explain this by the low volume flow. Can you please read from the efficiency pump what volume flow the system is running? Ours always shows about 800 liters per hour there.

Have you ever seen your flow rate during defrosting?

Ours always modulates around 600l/h. During defrosting, the flow rate is about 1100-1200l/h. The system has been running continuously since 12/24.

It only says that in there

Have you ever seen your flow rate during defrosting?

Ours always modulates around 600l/h. During defrosting, the flow rate is about 1100-1200l/h. The system has been running continuously since 24.12.

Thank you, I will compare the values tomorrow. No, I will check the flow rate during defrosting tomorrow.

strange, it looks a bit different for me. But thanks!

Here for comparison when defrosting, it can really only be due to the flow in your case.