Which statement about trouble signals is accurate?

Which statement about trouble signals is accurate?

• A. They must be indistinguishable from alarm signals.
• B. They must be distinctive from all signals and located where audible if intermittent.
• C. They must be audible only on the main panel.
• D. They must be suppressed during alarms.

Answer: (B)

Trouble signals are meant to flag faults in the fire alarm system, not to imitate an actual fire alarm. They must be distinctive from all other signals so responders can tell at a glance that a fault exists rather than a fire event. They should also be audible in locations where someone can hear them, especially when the fault is intermittent, so maintenance personnel can locate and fix the issue promptly. If trouble signals were indistinguishable from alarm signals, people might mistake a fault for a real evacuation, leading to confusion. If they were audible only on the main panel, occupants or technicians in other areas could miss the warning. If they were suppressed during alarms, faults could go unnoticed exactly when the system needs to be most reliable.

Trouble signals are meant to flag faults in the fire alarm system, not to imitate an actual fire alarm. They must be distinctive from all other signals so responders can tell at a glance that a fault exists rather than a fire event. They should also be audible in locations where someone can hear them, especially when the fault is intermittent, so maintenance personnel can locate and fix the issue promptly. If trouble signals were indistinguishable from alarm signals, people might mistake a fault for a real evacuation, leading to confusion. If they were audible only on the main panel, occupants or technicians in other areas could miss the warning. If they were suppressed during alarms, faults could go unnoticed exactly when the system needs to be most reliable.