102 en | Maintenance Aspiration smoke detector LSN improved
2020.04 | 6.1 | F.01U.029.275 Operation guide Bosch Sicherheitssysteme GmbH
Notice!
Once any faults have been rectified, the parameter settings must be restored to their original
status via the RPS software.
The commissioning procedure must be repeated from
Calibrating the airflow sensor, page 97
.
Once commissioning has been concluded, the set values must be collected and saved using
the DIAG Diagnostic Software. A printout of the set values should be placed in the project
folder.
8 Maintenance
8.1 Visual check
Check whether…
– The pipe system is securely installed and undamaged (where freely accessible)
– The air sampling openings of the pipe system are free
– The aspiration pipe and connection cable are securely connected
– The unit mounting – if present – is properly secured
– The aspirating smoke detector is damaged (see also
Flash code table, page 102
).
8.2 Flash code table
Malfunctions and unit statuses are displayed using flashcodes:
– By means of an LED on the detector module
– By means of one or two LED(s) on the unit motherboard (one LED per detector module).
LED flash code on detector module
1 flash Airflow initialization active (flow-init)
2 flashes Airflow too small (obstruction)
3 flashes Airflow too large (pipe breakage)
4 flashes Unit upload (approx. 2min)
Permanently lit Detector faulty
LED flash code on the motherboard (LED1/LED2)
1 flash Error: internal voltage monitoring 1
2 flashes Error: internal voltage monitoring 2
3 flashes Error: fan voltage monitoring
4 flashes Error: air pressure correction voltage monitoring
5 flashes Software error
6 flashes Internal error 1
7 flashes Internal error 2
8 flashes Unit upload (approx. 2min)
8.2.1 1 Flash - Error: Internal Voltage Monitoring 1
In operation with two detector modules, both LEDs flash. When troubleshooting, the following
steps should be carried out in the specified order.
– Operating voltage too low
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