6.3.10 CO sensor testing flowcharts
Figure 26: Testing a single CO sensor
Figure 27: Simultaneous testing
of multiple sensor technologies
Note: The LED on the base can turn ON prior to slow flashing
depending on when the individual sensors alarm. Only the last
LED requested to flash will slow flash. All others will turn to steady
ON. Flashing of the LED will only be performed when the IDNet CO
algorithms are disabled for testing. During Walktest, a reset timer
is activated so that the LED is reset to the OFF state without need-
ing a reset at the panel. This reset is user programmable and can
be as short as 15 seconds long. This automatic reset may cause
the LED on the base to turn OFF before the test is complete. For
example, it's possible that depending on the test tool, the LED (if
all of the sensors are good) could turn ON then reset to OFF, turn
ON then reset to OFF then finally slow flash then reset to OFF.
Note:
The following describes the LED states:
LED OFF - No sensors have exceeded their thresholds
LED ON - At least one sensor exceeded its threshold
LED FLASHING - All sensors for this device have exceeded their
thresholds (Note: This could be 2 or 3 sensors depending on what
type of CO combination device is configured)
Flashing will only be performed when in testing (IDNet CO
algorithms are disabled).
page 40 574-709 Rev. AP
4098 Detectors, Sensors, and Bases Application Manual
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