Final answer:
In the event of a fire/overheat detector loop failure, different messages will be displayed based on the specific failure. These messages help identify the type of detector loop that has failed and inform the appropriate personnel for necessary actions.
Step-by-step explanation:
In the event of a fire/overheat detector loop failure, the message displayed will depend on whether the failure is related to a fire detector loop, an overheating detector loop, or both. If only the fire detector loop fails, the message 'FIRE DETECTOR LOOP FAIL' will be displayed. If only the overheating detector loop fails, the message 'OVERHEAT DETECTOR LOOP FAIL' will be displayed. If both loops fail, the message 'FIRE AND OVERHEAT DETECTOR LOOP FAIL' will be displayed.
For example, if a building has a centralized fire alarm system with separate loops for detecting fires and overheating, and the fire detector loop fails, the message 'FIRE DETECTOR LOOP FAIL' will be displayed on the control panel or alarm annunciator.
These messages are important for alerting maintenance personnel or fire safety authorities about the specific loop failure that needs to be addressed.