We have an aircon system for 3 rooms. Temperature control of these rooms has been erratic. Building was built in 2008, but when I tried looking at the O&M Manual much of it says 'to follow'. Each room has a local Daikin BRC1D52 controller, there is also a BMS which I have interrogated using its IQView touch panel and discovered it monitors the CO2 and temperature in the rooms. On Friday 2 of the Daikin controllers indicated they were under control from elsewhere (presumably the BMS) and one wasn't. Today it's the other way round. No one in the school has a clue why they are different, why they have swapped or how to control the system.

Can anyone suggest how I can control where the aircon from a room is controlled from?