devireg 550

Hi, The apartment I rent has Devireg 550 underfloor heating in bath. Somehow the cover of thermostat is lost and now it looks like that without cover: So, we lost cover. And now my landlord asks from me to fix it before handover. I checked many places and not found any place selling spare...

I have a Devireg 550 fitted to control our under floor heating in the bathroom. However, the controller seems to have stopped working and is not displaying the screen settings correctly or switching the heating on. How easy is it to fit a new controller? Do I need to buy the same type, same...