Ice formation brine pipe heat pump

Can you tell me more about the heat pump between Fixed and the other one, preferably via private message. We signed our contract for the building services at the end of 2018 and it stated a 333G there. According to the company, Viessmann launched a new generation of heat pumps at the beginning of 2019 and the old 333G is now supposed to be the 222G and the 333G was newly developed—is that correct? That’s why the company thinks we received the technology we purchased. Well, in my opinion, if 333G is in the contract it must be delivered as well. If I order a Golf I don’t want to get a Polo just because it now has the same engine, that’s my opinion... Well, but that’s actually a different topic.

Here are a few pictures of the entire system and possibly some more helpful pictures I found in the menu, I don’t know what can be read from these. I might take a look at this forum, thanks!

Just for comparison, I have a 333-G with 2x 70m probes. I also find it quite intense how often the heating has already been running. Let someone from Viessmann come, something is fundamentally wrong.

44h compressor runtime and 260 kWh in one week in September is not normal, and that also explains the icing. Look at the values from H. In the last 4 weeks, I had a total of 6h compressor runtime. Those are normal values.

So the question is: why is the compressor running so much? I suspect you don't have 30°C in the house, the hot water is not set to 60°C. What is the average runtime of the compressor? Does it run often and short, or rarely and long? What is your system layout - do you have a buffer tank or do you go directly into the underfloor heating? Do you see any error messages in the brine-water heat pump?

No, we have 22 degrees in the house and the hot water is at 42°. I believe it goes directly into the underfloor heating without a storage tank. The system often runs only briefly. Here is a picture of the message history. It is always notice 54 that the flow temperature is too low and notice 10 means the compressor is off.

The runtimes and cycles will only be a symptom. The problem lies towards the heat source

No, we have 22 degrees in the house and hot water is at 42°. I believe it goes directly into the underfloor heating without a buffer tank. The system often only runs briefly. Here's a picture of the message history. It's always message 54 that the flow temperature is too low and message 10 is compressor off.

Something is fundamentally wrong. Turn off the cooling completely, maybe it is interfering. Can you read out the settings of the curves (flow, return)? Do you have ERRs?