Hi,
My system is around 4-5 years, warranty is not valid any longer.
While using Floor heating ('Water law' mode with all zones open) + DHW, I encountered a strange issue (No errors).
The issue:
1. Flow pump starts;
2. Heat pump starts to run;
3. After 3 minutes, 3 way valve switches to DHW (at the time DHW is 47.5 degrees celsius, keeping it at 48 degrees celsius - start at 5, stop at 2 - default setting values);
4. Warms up to the DHW temperature or slightly lower (takes a couple of minutes ) then switches back to the floor heating by releasing hot water into the floors;
While EHS is working as described, DHW temperature drops much faster what results in increased consumption, floors doesn't feel comfy at all
Worth to mention, if heating or DHW only is used, system works just fine.
Has anybody encountered anything similar? My best guess is faulty PCB..
/ Jonas