Macurco GD-2B User Instructions - page 10
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TROUBLE INDICATOR
Internal failure of the GD-2B will cause an open circuit in the normally closed (NC)
Trouble Relay to provide for actuation of the control panel circuits. The status LED will
flash AMBER and the GD-2B buzzer will emit a short “chirp” (if the BUZZER is enabled)
every 50 seconds. See ERRORS section. The GD-2B microprocessor continuously
monitors various detector parameters. Failure of the GD-2B’s internal power supply or a
lack of power to the detector will result in the status light remaining OFF (not illuminated).
In this case, the most common cause of detector trouble would be a break in the wiring
between the control panel and the GD-2B.
END-OF-LIFE INDICATOR
Seven years after the GD-2B is installed the end-of-life signal will be activated indicating
that the GD-2B has reached the end of its service life and needs to be replaced. The end-
of-life signal will cause an open circuit in the normally closed (NC) Trouble Relay to
provide actuation of the signal circuits. The status LED will flash alternate AMBER and
OFF every 2 seconds and the GD-2B buzzer will emit a short "chirp" every 50 seconds (if
the BUZZER is enabled). The end-of-life buzzer can be silenced for 48 hours by pressing
the "TEST/RESET" button. The silencing of the buzzer also resets the Trouble Relay to
the Normally Closed (NC) position. The silence function will continue to be available for
29 days after the GD-2B initiates an end-of-life signal. After this 29 day period the GD-2B
can no longer be silenced and must be replaced.
ERRORS
The GD-2B continuously monitors various internal operating parameters. If a problem is
found, the unit will switch to Trouble mode. See TROUBLE INDICATOR section. To reset
the unit for normal operation, press the TEST/RESET switch, or remove power to the unit,
wait a few seconds, then re-apply unit power. If this problem persists, your detector
requires repair; contact the alarm panel installer or Macurco Tech Support for advice. If
repair is required, return the unit to manufacturer to comply with warranty.
Do not cover or obstruct visual alarm LED. Doing so may adversely affect product
performance and result in sickness or death.