Compliance with fire orders is an Owners’ Corp responsibility not an individual owner’s responsibility. This is followed up most often by the OC installing fire or more correctly, “smoke” detectors in each flat. One detector per floor. So a one level flat would have one detector. A flat of the same size but on 2 floors (levels) require 2 detectors. If installed by the OC, these are connected to a common “fire board” located in say the garage, store room or meter room.
The very fact that such a fire board (to which the many flats’ alarms are connected) exists is proof of OC responsibility to install and maintain (and that includes annual testing).
If a “fire board” does not exist then it would seem that the OC decided that each owner would install his/her own smoke detector and with that often comes the individual owner’s responsibility for annual testing. Of course the OC could complicate matters by deciding to itself arrange for annual inspections those detectors installed by individuals.
Note: “fire board” is an electronic board that reveals if the various detectors are working fine or if there is a fault with one or more. It also identifies where the fault is located.