The temperature inside MC building has rised to about 25 degrees in environmental probes, after a fast rise it seems to have reached a plateau.
Looking at HVAC monitors and IPS current monitors (see Figure) the HVAC system (heaters and chillers) seems to have stopped around 13:20 UTC.
It can be related to the test that was started this afternoon of putting the MCB on a local electrical neutral.
Davide has been contacted. Yet, the situation seems not crtitical and can probably wait till the morning. Having reached the maximum the internal temperature will not increase more during the night.