PRE-ALARM Siemens — False Fire Alarm
At a glance
- Severity
- WARNING
- Domain
- FIRE_SUPPRESSION_SYSTEM
- Reference standard
- UNI 9795 / DPR 151/2011
What it means
False fire alarm: useless evacuations, loss of staff trust and risk of improper agent release. A serious management problem beyond the technical one.
Probable causes
- Dust on detectors (work in the room without protection)
- Inadequate thresholds or calibration
- Interference and temporary smoke/dust sources
- Detection maintenance behind schedule
Full guided diagnosis in the app
The diagnostic tree for this fault has 3 guided steps with measurements, checks and resolutions. You'll find it in DataCIQ, one of the five IndexOS apps: free, works offline.
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The same fault on other brands
More Siemens codes
- DAMPER FAULT — Smoke Damper / Extraction Failure
- DETECTOR FAULT — Detection Failure (No Alarm)
- FAN DAMPER FAULT — Release with Poor Room Integrity
- RELEASE CIRCUIT FAULT — Suppression Release Failure
- 0xE900 / 0xE901 — IO-Link communication lost (device not responding)
- 6EP1333-4BA00 — Unstable PLC power supply — cyclic restarts
- 6ES7521-1BL00-0AB0 — Digital input module — input not reading (stuck at 0)
- 6ES7522-1BL01-0AB0 — Digital output module — output not activating