GROUND FAULT Notifier — Fire Zone Fault / Open Circuit
At a glance
- Severity
- FAULT STOP
- Domain
- FIRE_DETECTION
- Reference standard
- EN 54-2 / UNI 9795
What it means
The panel reports a zone fault or open circuit: the loop or conventional line is interrupted. A detector removed from its base without isolation, a missing or wrong-value end-of-line resistor, loose or oxidized terminals are the main suspects.
Probable causes
- Loop or zone cable interrupted
- Detector removed from base without prior disablement
- End-of-line resistor missing or wrong value
- Loose or oxidized terminal on the panel
Full guided diagnosis in the app
The diagnostic tree for this fault has 7 guided steps with measurements, checks and resolutions. You'll find it in BASIQ, one of the five IndexOS apps: free, works offline.
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The same fault on other brands
More Notifier codes
- FIRE ALARM — False Alarm / Unwanted Alarm
- LOW BATTERY — Fire Panel Battery Low