Open grounds in a fire alarm system result in what type of signal?

An open ground in a fire alarm system is indicative of a fault in the electrical circuit. This type of fault disrupts the normal operation of the system and creates a condition that requires attention. When an open ground is detected, the fire alarm system interprets this condition as a potential problem that could affect the reliability and functionality of the system. Therefore, it generates a "trouble" signal to alert the operator or technician that there is a need for investigation and corrective action.

In a fire alarm system's monitoring logic, trouble signals serve a crucial purpose: they ensure that any issues compromising the system’s integrity are promptly identified and addressed before they lead to failures during a real emergency. Understanding this helps technicians maintain the reliability of fire safety measures.