What does it mean if a fire alarm system is deemed out-of-service?

When a fire alarm system is deemed out-of-service, it indicates that the system has completely failed and is unable to perform its intended function of detecting and alerting occupants to a fire. This status means that there is no reliable way to alert individuals in the building of a fire emergency until the system is repaired or replaced. It is crucial for safety personnel to promptly address any out-of-service status to ensure the security of the building and its occupants, as a non-functional alarm system significantly increases the risk during a fire.

Understanding that an out-of-service designation encompasses total failure helps prioritize immediate action for restoration. This is distinct from other conditions like needing maintenance or being temporarily inactive, which might still allow the system to function adequately to some degree or involve periodic checks without complete failure. A system that requires testing may not be out-of-service per se, but rather undergoing procedures to ensure functionality. Thus, the designation reflects a critical safety concern requiring urgent attention.