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Structure and function
3
Function
3.3.3 Diagnosis levels
32 | 94
Building Technologies
Fire Safety
The detector monitors its operation largely autonomously. The signals of all
sensors are permanently monitored. In particular, the temperature sensors, light
emitters, and light receivers are monitored to ensure that they are functioning
correctly. Signal processing takes account of the monitoring results and adapts its
behavior accordingly.
The following diagnosis levels are derived from the different control measurements:
Normal
Observe information
Replacement recommended
Replacement necessary
Fault
For details, see table below.
The CO sensor can only be monitored for failure. For a functional test, the CO
sensor must be tested with test gas.
When an error occurs which impairs the correct functionality of the device, a fault
message is reported to the control panel.
To correct the cause of the fault, additional information is available in the device.
The additional information can be displayed using e.g. the detector exchanger and
tester FDUD292 or the intelligent detector tester FDUD293.
You will find more information in documents 007227 and 009718.
A6V10209291_h_en_--
2016-03-03
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