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How to Troubleshoot an AFP-200 Fire Alarm Panel

Terri Williams

The AFP-200 is a line of fire alarm panels manufactured by Notifier Fire Systems. The AFP-200 is marketed as a small, economical alarm panel with features comparable to larger, more expensive fire alarm panels. Like most electrical equipment, the AFP-200 is susceptible to malfunctions and errors, but these breakdowns in communication can usually be resolved easily and quickly.


Dead batteries or a loose battery connection can cause fire alarm panel issues.

Step 1

Press the “Acknowledge/Step” button, and then press the “Bell Isolate” button, and then press the “Reset” button to restore the panel to its default settings. A recent power outage or other power interruption can cause the alarm panel to malfunction. However, resetting the switch should clear the system of electrical glitches. Pressing this sequence of buttons will also clear out any existing alarm or false alarm signals.

Step 2

Press the “Acknowledge/Step” button and then press the “Isolate” button if the steps listed above do not reset the alarm.

Step 3

Check the “System Trouble” LED. The LED will emit a yellow flash when there is a problem with the alarm. However, after you press “Acknowledge/Step,” the LED will be a steady yellow color. The yellow light will remain on until all system troubles have been corrected. Note that the presence of the System Trouble LED does not mean that the alarm has not been breached, but that there is a technical problem with the fire alarm panel.

Step 4

Check the AC power to ensure connectivity and then check the circuit breaker to be sure it has not been tripped. The AC power and circuit breaker are both on the bottom left side of the panel’s keypad display area. To reset the circuit breaker, flip it completely off and then on again.

Step 5

Check the “Battery Fault" LED to see if the batteries need replacing. The AFP-200 uses two 12-volt batteries. If one of the batteries has died or is loose, the alarm panel will not function properly. In the event of an AC power loss, the batteries are essential for ensuring the continuity of communication with the between the alarm panel and the alarm system.

Step 6

Check the battery connectors to see if they are loose. The battery connectors are directly below the panel’s keypad display area.