On most Menta properties, in the entrance hallways, there are 3 sets of wiring and have now qualified what they are all for
One is obvously a wall light and the 2nd , normally the right hand wires, is the pre-installation for the AC control panel
The third set, immediately left of the AC wiring, is pre-installation for an optional controller for the heating as this has no timer and temperature is controlled via thermostatic radiator valves in each room
I am now checking costs and the features for this controller and if ithey are controlled by a dedicated breaker in the fuse box, as on RODA, but if you are not having this controller this these wires should be safely disconnected and the wall made good