What does a trouble signal indicate in a fire alarm system?

A trouble signal in a fire alarm system is an indication that there is a malfunction or issue that needs attention. This could be related to various components of the system not functioning correctly, such as a faulty sensor, a broken connection, or issues with wiring. The presence of a trouble signal alerts technicians or system users to investigate and resolve the problem to ensure the fire alarm system is fully operational.

Understanding this aspect is critical for maintaining safety and reliability in fire protection measures. A timely response to a trouble signal helps prevent potential failures in detecting fires or alerting occupants in an emergency situation, thus reinforcing the importance of promptly addressing any operational issues within the fire alarm system.