If a trouble signal occurs while the system is in silent mode, what should happen?

In the context of NFPA 72, a trouble signal is an indication that there is a fault or issue within the fire alarm system, which could include issues like wiring problems, device malfunctions, or low power conditions. Even when the system is in silent mode—typically activated to mute alarm signals to prevent unnecessary disturbance in a non-emergency situation—safety protocols dictate that trouble signals must still be active.

This is because the presence of a trouble signal could indicate a significant problem that requires immediate attention to ensure the system remains functional. Ignoring the trouble signal, or allowing it to go silent, could leave the system non-compliant with safety standards and potentially endanger occupants in the facility.

Therefore, regardless of whether the system is in silent mode, it is essential for the trouble signal to be audible or visually indicated so that responsible personnel can address the issue promptly and ensure the reliability of the fire alarm system. This adherence to protocol reinforces the importance of maintaining the operational integrity of safety systems.