FACP FACP Troubleshooting & Diagnostics 1

Question 1

A fire alarm control panel displays a 'ground fault' trouble condition. What is the most likely cause?

Accepted Answer

A wire in the system is contacting a grounded surface

Answer

A ground fault trouble indicates that a conductor in the wiring circuit is making unintended contact with a grounded metal conduit or enclosure.

Question 2

Which tool is most useful for locating a wire-to-wire short circuit in an SLC loop?

Accepted Answer

Multimeter set to resistance (ohms)

Answer

A multimeter set to resistance mode measures continuity and can pinpoint a short by identifying near-zero resistance between two conductors.

Question 3

An initiating device circuit (IDC) shows an 'open' trouble. What does this indicate?

Accepted Answer

A break in the wiring continuity of the circuit

Answer

An open trouble on an IDC means the supervisory current path has been interrupted, indicating a wire break or disconnected device.

Question 4

After replacing a smoke detector, the FACP still shows a trouble for that address. What is the FIRST diagnostic step?

Accepted Answer

Verify the replacement detector is fully seated in its base

Answer

A detector that is not fully seated will not make proper electrical contact with its base, causing persistent trouble conditions.

Question 5

A notification appliance circuit (NAC) shows a 'short' trouble. Which condition would cause this?

Accepted Answer

Positive and negative conductors are touching each other

Answer

A short on a NAC occurs when the positive and negative circuit conductors make direct contact, bypassing the load and circuit supervision.

FACP - Fire Alarm Control Panel Certification Practice Test