Alarm Silence Software Considerations
The following software functions affect ALARM SILENCE operation.
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If a Coded Input Device is activated, the <ALARM SILENCE> key press may be ignored until this function
has completed coding. Notification appliances cannot be silenced when a coded station is in alarm. However,
the flashing LED will change from flashing ON to steady ON when the <ALARM ACK> key is pushed. The
notification appliances silence automatically upon coding completion.
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If the Alarm Silence Inhibit Function is activated but not completed, the <ALARM SILENCE> key press is
ignored. The message, “ALARM SILENCE INHIBITED”, displays for a short time to indicate the action was not
taken. The message “ALARM SILENCE NO LONGER INHIBITED” displays when the inhibit function times
out. If selected, the alarm silence inhibit may be programmed from 1 to 99 minutes. When selected, signals
cannot be silenced until the programmed time has elapsed.’
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If Waterflow/Sprinkler Devices are activated, notification appliances may or may not be silenced (depending
on local code requirements). Usually, a dedicated bell will continue to sound to indicate water flow.
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Some visual notification appliances may continue to flash until the system is reset.
SYSTEM RESET KEY
The <SYSTEM RESET> key is used to return the system to its normal state after a Fire Alarm Condition has been
cleared. When the <SYSTEM RESET> key is pushed, it causes any latched circuits to reset automatically. Also reset
are initiating devices, relays (including the city relay), notification appliances, and all LEDs and indicators which are
programmed to reset with the <SYSTEM RESET> key. The message, “SYSTEM RESET IN PROGRESS”, displays
when the <SYSTEM RESET> key is pressed. When the Fire Alarm Condition has reset, the FIRE ALARM LED
flashes, and the system requires that the <ALARM ACK> key be pressed.
When the <ALARM ACK> key is pressed, a message should be displayed that is similar to the one shown below.
SYSTEM IS NORMAL
8:37:13 MON 04-APR-94
If a zone stays in alarm during the reset period, the message “SYSTEM RESET IN PROGRESS” is followed by the
message shown below.
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ALARM PRESENT, SYSTEM RESET ABORTED
When the “SYSTEM RESET ABORTED” message displays, the system remains in an alarm state. The display
indicates the total number of alarms present in the system along with a prompt to use the <ALARM ACK> key to
review the points. These points do not require acknowledgment. The ALARM LED remains ON to indicate that a
device is still in an alarm condition.
If the system does not reset, and the display still shows an alarm although no alarm condition exists, read the
alphanumeric display on the interface panel to determine the type of device and the location of the device in alarm.
Follow local procedures to investigate the area of the building with the alarm. Look for devices still in alarm (pull
stations, smoke detectors, etc.). Most devices latch until they are reset, either by the system or manually.
IF THE ALARM POINT DOES NOT RESET
If a device does not reset, you may choose to perform the Disable Procedure given in the following paragraphs.
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