SUPERVISORY: NFS-320 Trouble Code | Fire Alarm Resource Center
SUPERVISORY
supervisory
Notifier NFS-320
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What This Code Means
A system condition indicating an off-normal state of a monitored device or subsystem, such as a sprinkler valve or waterflow switch, that requires attention but is not a fire alarm.
Common Causes
1Waterflow switch activation
2Sprinkler valve tamper switch activation
3Monitor module activation
Resolution Steps
Identify the active device on the 80-character LCD display, press the Acknowledge/Scroll Display key to silence the panel sounder, and press the System Reset key after the off-normal condition has been corrected.
