Bosch FCS-320-TP2 - Maintenance; Visual Check; Flash Code Table; Flash - Error: Internal Voltage Monitoring

110 en | Maintenance Aspirating Smoke Detector
2018.04 | 2.0 | F.01U.130.926 Operation Guide Bosch Sicherheitssysteme GmbH
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 110).
See also
– Flash Code Table, page 110
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. 2min)
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. 2min)
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
– Using a multimeter, measure the operating voltage (DC) of the aspirating smoke
detector.
– The measurement value must be between 14V and 30V.
Restore the correct power supply.
– Display board faulty