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Nac 3 Fault

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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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NAC 3 FAULT: MS-9200UDLS Trouble Code | Fire Alarm Resource Center

NAC 3 FAULT

trouble

Fire-Lite MS-9200UDLS

158 views·0 field notes

What This Code Means

A fault condition (open or short) has been detected on Notification Appliance Circuit 3.

Common Causes

1Missing 4.7K ohm EOL resistor
2Broken circuit wiring
3Short in a notification appliance

Resolution Steps

Check for the presence of the 4.7K ohm EOL resistor at the end of the circuit. Inspect wiring for opens or shorts.

Manual References(3)

1fire-liteMS-9200UDLSInstallation2005p. 110, 153, 108Open

2fire-liteMS-9200UDLS Rev 2Datasheet2009Open

3fire-liteMS-9200UDLS Rev 3Datasheet2010Open

Field Notes

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Related Codes

COMM FAULT 1The communicator failed to successfully transmit a report to the central station using line 1.TELCO LINE 1The panel has detected a loss of voltage or failure on telephone line 1.COMM FAULT 1 / COMM FAULT 2Indicates a communication failure between the panel's internal Digital Alarm Communicator/Transmitter (DACT) and the central station.NAC 4 FAULTA fault condition (open or short) has been detected on Notification Appliance Circuit 4.REMOTE SYNC FAULTA fault has been detected on the remote synchronization output circuit.

Related Questions

What does INVREP trouble mean on the MS-9200UDLS and how do I resolve it?How do I perform a walk test on the MS-9200UDLS?How do I troubleshoot a ground fault on the MS-9200UDLS?

All MS-9200UDLS trouble codes MS-9200UDLS panel page