Sorry for English (again), I like to share the progress we had using the Atlantic Explorer 3 with the help of @Obone Unfortunately he stopped this 2 months ago.
Not all things work like they should, there is more to investigate.
The app can set the Away timer and that's not easy in Domoticz because of the sequential menu's which are passed.
We can't show the current water temperature that is on the display and the app can't too.
I've got soms script errors and most of them where because of the Python version, 3.5.x gives problems.
It works fine with Python 2.7.x.
State on/off shows when the heatpump is active, sometimes it acts slow and is 1 to 20 minutes late.
Setting the desired water temperature works fine.
I'm running this script about 2 months and it always can log in, in the cron you can slow it down because getting the data takes some time.