Bosch FAS‑420‑TP Series - Page 122

122 en | Appendix Aspiration smoke detector LSN improved
2020.04 | 6.1 | F.01U.029.275 Operation guide Bosch Sicherheitssysteme GmbH
Device number
Temperature [°C]
Obstruction malfunction
LED flashing +/-
Relay fails after delay +/-
Signal transmission to fire panel +/-
Cause eliminated, LED off +/-
Relay activates after drop below threshold
+/-
Cause eliminated, LED saved +/-
Relay remains off +/-
Breakage malfunction
LED flashing +/-
Relay fails after delay +/-
Signal transmission to fire panel +/-
Cause eliminated, LED off +/-
Relay activates after drop below threshold
+/-
Cause eliminated, LED saved +/-
Relay remains off +/-
Info alarm
LED flashing +/-
Relay activates after delay +/-
Signal transmission to fire panel +/-
LED saved +/-
Relay saved +/-
Internal alarm
LED flashing +/-
Relay activates after delay +/-
Signal transmission to fire panel +/-
LED saved +/-
Relay saved +/-
Main alarm
LED flashing +/-
Relay activates after delay +/-