Experiences with brine heat pump

, have you already put your FlexoTherm into operation? We have had it running for about a week now and have the problem that it occasionally switches to "brine outlet temperature too low" (then you have to reset it), as it is factory-limited to +2°C brine outlet (meaning: "frost protection"). I am absolutely convinced (the pink forum says so too) that this is a wrong setting... but well, the heating engineer even called Vaillant because of this and they said that is how it is supposed to be -.- A Vaillant service technician will come again in the new year and I hope he will lower it then... just as info, in case it's interesting for you.

The standard password for the advanced settings was not changed on my heat pump, and with it you can also change such parameters. Maybe you can try that sometime (it’s probably also mentioned in one of Vaillant’s manuals or on the internet). Definitely worth a try. Although for me the temperature itself has never gone that low so far.

Passwords and stuff I have - could change that too - but I don't necessarily want to (later I might break something and the warranty is gone)
The brine outlet temperature never drops to +2 °C for you? How much heating load do you have at how many drilling meters (and what extraction capacity does your soil have)?
Cop is even given at 0°C brine inlet, right?

My pump is still at the dealer - I don't even have screed yet

After almost exactly 1 year in the house, approx. 200 sqm heated area with an average room temperature of 20 degrees. Timber frame construction, KFW 55, brine heat pump from Buderus. About €411 for heating and hot water in the 1st year (without new customer bonus from the electricity provider...). However, we can also heat with a water-based fireplace, which we use daily in winter. And we have large south-facing windows that heat the house for free in winter when the sun shines, simply raise the blinds...

Pocket fireplace with heat pump? So also a buffer tank? More interesting would be the consumed kW rather than an amount.