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

INVREP

trouble

Notifier NFW2-100

169 views·0 field notes

What This Code Means

Invalid reply from the addressable device, indicating a hardware problem.

Common Causes

1Internal device hardware failure
2Electrical noise on SLC loop
3Duplicate device address

Resolution Steps

Verify that no two devices share the same address. Check for sources of EMI/RFI interference. Replace the device if it continues to provide an invalid reply.

Manual References(1)

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

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