DIRTY1

maintenance

Notifier NFW2-100

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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.DIRTY2Maintenance alert indicating that a detector needs immediate maintenance due to being within 80% of its alarm threshold for 24 hours.NAC 1 FAULTA fault condition (open or short) on Notification Appliance Circuit 1.DUCT SUPERVISORYA supervisory condition has been triggered by a duct smoke detector.COMM FAULT 1The control panel has failed 10 total attempts to communicate with the primary Central Station phone number.

Related Questions

What is the maximum SLC wiring distance and resistance limit for the NFW2-100?Which Notifier intelligent detectors and modules are compatible with the NFW2-100 SLC loop?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