fire alarm system is not an indication of a fire occur in the space, but rather an indication of a electrical/electronic system is over heat. This over heat incidence can have a very high potential chance to destroy and shut down the system.

All of this so call fire accident needs no fire starting from over heat to a system being destroy. If a system start generating smoke, that system is basically over and done.

An fire alarm system can be equipped with relays designed to shut down that particular affect electrical/electronic system before the heat getting out of control. There shloud another remote back up system from ground space center to readjust the affect electrical/electronic system.

I believe this was what happen in XX7.