ADEMCO 5110XM Installation Instructions Manual page 22

If the warning buzzer is sounding or if the following is displayed on an
optional Alpha keypad,
C h e c k xx Z on e xx
press the silence/reset button (located on the upper right-hand side of the
5110XM pc board) to silence the warning buzzer. Restore any open zone(s) as
necessary (also make sure that you have connected a 2000 ohm EOL resistor
across the terminals of unused zones); Press the silence/reset button again to
reset the system and clear the display. If an optional Alpha keypad is
installed, when the **** SYSTEM NORMAL **** message is displayed,
you can proceed to the next step.
4. Fault and restore one of the hardwired zones. The built-in warning buzzer
and optional remote keypad buzzer will provide a slow pulsing sound if a fire
alarm was tripped, a steady sound if a 24 hour non-fire or emergency alarm
was tripped, or a rapid pulsing sound if a fire supervisory or trouble
condition was tripped.
Press the built-in Silence/Reset button to silence the buzzers. The built-in
SILENCED LED will light. Press the Silence/Reset key again to clear the
SILENCED indication. Repeat this procedure for each of the remaining
hardwired zones.
Note: This test may activate external alarm sounders (if connected) and may
send a central station report (if programmed). Therefore, building occupants
and the central station should be alerted before conducting this test.
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