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Nfw2 100
Dirty1

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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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DIRTY1: NFW2-100 Trouble Code | Fire Alarm Resource Center

DIRTY1

maintenance

Notifier NFW2-100

78 views·0 field notes

What This Code Means

Maintenance alert indicating that a detector is near but below the allowed alarm limit.

Common Causes

1Dust accumulation
2Environmental contamination
3Aging sensor

Resolution Steps

Clean the detector sensing chamber using compressed air or a vacuum. If the condition persists, replace the detector head.

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.NAC 1 FAULTA fault condition (open or short) on Notification Appliance Circuit 1.DIRTY2Maintenance alert indicating that a detector needs immediate maintenance due to being within 80% of its alarm threshold for 24 hours.

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