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DIRTY2maintenance

Notifier NFW2-100: DIRTY2

Notifier NFW2-100·0 views·0 field notes

What This Code Means

Maintenance alert indicating that a detector needs immediate maintenance due to being within 80% of its alarm threshold for 24 hours.

Common Causes

  • 1Heavy dust or dirt buildup
  • 2Smoke residue
  • 3Sensor malfunction

Resolution Steps

Immediately clean the detector sensing chamber. If cleaning does not clear the maintenance alert, replace the detector.

Manual References(1)

Field Notes

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Related Codes

COMM FAULT 1The control panel has failed 10 total attempts to communicate with the primary Central Station phone number.TEST FIndicates a detector has failed the automatic test operation of its sensing chamber and electronics.NAC 1 FAULTA fault condition (open or short) on Notification Appliance Circuit 1.AC_FAILThe control panel has lost primary AC power.INVREPInvalid reply from the addressable device, indicating a hardware problem.

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