Problem-Solving and Critical Thinking Flashcards

During a fire alarm system inspection, a technician finds that a pull station is obstructed by a recently installed shelving unit. What must be done?

Answer: Document it and inform the customer that the obstruction must be removed to meet code

Fire codes require pull stations to be accessible and unobstructed; the technician must document the violation and require the customer to correct it.

A PIR detector is generating false alarms in a room with large windows facing west. What environmental factor is most likely responsible?

Answer: Direct sunlight heating entering through the windows and causing thermal spikes

Late afternoon sun can cause intense infrared radiation to enter through west-facing windows, creating thermal changes that PIR detectors misinterpret as motion.

A system is showing a 'low battery' trouble condition immediately after a new battery was installed. What should the technician suspect?

Answer: The new battery is defective or is not the correct capacity for the system

A new battery showing low immediately after installation indicates the battery is defective, discharged, or the wrong amp-hour rating for the panel.

An alarm system is installed in a building that subsequently undergoes major renovation, adding metal ductwork throughout. Wireless sensors begin failing. Why?

Answer: Metal ductwork attenuates RF signals, blocking wireless sensor communication

Metal structures act as RF shielding, significantly reducing wireless signal strength and causing communication failures between sensors and the receiver.

A technician installs a new access control reader but the door will not unlock when a valid credential is presented. After confirming the credential is enrolled, what is the next step?

Answer: Verify the wiring between the controller and the electric lock, and check lock power supply

When credentials are valid but the door does not unlock, the problem is likely in the physical wiring or power supply to the lock rather than the software.

A customer wants to add a second keypad in their garage but the existing wire run is too short. What is the correct approach?

Answer: Run a new dedicated home run wire from the panel to the garage

Running a dedicated home run ensures signal integrity and proper power delivery, which splice connections over long distances may not reliably provide.

A technician receives a trouble signal from a customer's system but when they call, the customer says everything appears normal. What is the best course of action?

Answer: Remotely connect to the panel's event log to identify the specific trouble condition and determine if a service visit is needed

Reviewing the remote event log allows the technician to identify the exact nature of the trouble and make an informed decision about next steps.