Thanks. Yes I can also have it like that on the picture but then I can’t set thermostat temperature! It’s either indoor temperature OR weather law offset temperature/outlet temperature.
I was just playing with it and for me it works as follows (not satisfactory).
The options what you have on bottom left corner depends on some settings. In service mode you have “Indoor Zone Options”. First Item is colling/heating where you can select Colling&heating and heating only. If you select heating only you will have only one item “Heating” in bottom left corner and you can’t change it. If you select heating&cooling then you will see 3 option in bottom left corder. “Heating”, “Cooling” and “Auto”. But if it is greyed out or not depends on another setting called “Standar Temperature”. And this is the catch. There are two options “Indoor” and “Water outlet”. If you select Indoor then in right bottom corner you see “Indoor” only and you can’t change it. But if you select “Water outlet” then you have “Auto” available!
But the big problem is that then in Heating mode you can change only water outlet temperature so water law is ignored completely and in Auto mode you can offset weather curve by +/-5C…
This is also what I don’t need. I would need 3rd option to set a thermostat temperature but this is not available… Again Samsung or I missing something 
UPDATE: I wonder one thing. When I switch to AUTO and Water Law… How the pump know if it should start heating or stop heating when there is no thermostat target temp visible anymore ??? Will it stay at the last set value or how it works ?? Really Can’t understand this…
If so it will remember so if I set 22C before as a target temperature and in Water Law mode it will start heating at 22C and stops at 23C - only as a security point then I would be fine with that because I don’t need to touch target room temperature. I always have constant temp.