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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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SW TBL: NFW2-100 Trouble Code | Fire Alarm Resource Center

SW TBL

trouble

Notifier NFW2-100

67 views·0 field notes

What This Code Means

Indicates a module has failed the testing of its Class A switching relay.

Common Causes

1Relay hardware failure
2Wiring fault on Class A return
3Defective module

Resolution Steps

Inspect the wiring for the Class A circuit. If wiring is correct, replace the control or monitor module.

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?

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