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Nfw2 100
Nac 1 Fault

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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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NAC 1 FAULT: NFW2-100 Trouble Code | Fire Alarm Resource Center

NAC 1 FAULT

trouble

Notifier NFW2-100

93 views·0 field notes

What This Code Means

A fault condition (open or short) on Notification Appliance Circuit 1.

Common Causes

1Missing EOL resistor
2Broken wire
3Short in notification appliance

Resolution Steps

Check for the presence of a 4.7K ohm EOL resistor. Inspect wiring for opens or shorts. Verify all appliances are functional.

Manual References(1)

1notifierNFW2-100Installation2005p. 18, 127, 107, 109, 126 +5Open

Field Notes

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Related Codes

INVREPInvalid reply from the addressable device, indicating a hardware problem.COMM FAULT 1The control panel has failed 10 total attempts to communicate with the primary Central Station phone number.DUCT SUPERVISORYA supervisory condition has been triggered by a duct smoke detector.DIRTY2Maintenance alert indicating that a detector needs immediate maintenance due to being within 80% of its alarm threshold for 24 hours.WATERFLOWA device type identifier and event code for a monitor module programmed to monitor sprinkler system waterflow switches, representing a high-priority alarm condition.

Related Questions

Which Notifier intelligent detectors and modules are compatible with the NFW2-100 SLC loop?What is the maximum SLC wiring distance and resistance limit for the NFW2-100?How do I program the built-in DACT on the NFW2-100 for central station communication?

All NFW2-100 trouble codes NFW2-100 panel page