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Nfs 320
Photo Co C Sup

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System TroubleSupervisoryGround FaultNACCommunicationPowerDeviceNetwork

Troubleshooting Tip

When diagnosing codes, always check the event history log first. Many trouble conditions are intermittent and tied to environmental factors like temperature or moisture.

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Photo/CO (C Sup): NFS-320 Trouble Code | Fire Alarm Resource Center

Photo/CO (C Sup)

supervisory

Notifier NFS-320

65 views·0 field notes

What This Code Means

Indicates activation of the CO element of a detector, which triggers the SUPERVISORY LED.

Common Causes

1Carbon monoxide detection
2CO element activation

Resolution Steps

Investigate the area for carbon monoxide and reset the panel.

Manual References(2)

1notifierNFS-320Operations2011p. 21, 68, 70, 5Open

2notifierNFS-320CDatasheet2017Open

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Related Codes

LO VALThe detector chamber reading is too low or internal elements are failing.BAT.BACKUP RAMThe RAM battery backup voltage is low.PRLOSSThe output module or new sounder base lost power.INVREPThe device has returned a response to the panel that the panel did not recognize.System ResetA system command or status message indicating the control panel is clearing all active inputs, interrupting resettable power, and decoupling from the network for 60 seconds.

Related Questions

What are the main differences between the NFS-320 and the NFS2-640?What are the NAC circuit specifications for the NFS-320, and how does the shared 6-amp power supply limit total NAC loading?What batteries does the NFS-320 use, and when is an external battery box required?

All NFS-320 trouble codes NFS-320 panel page