Notifier NFS2-640

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What This Code Means

A TM-4 transmitter module connected to a municipal box is not responding to the control panel.

Common Causes

1TM-4 module is not responding
2Communication failure between the CPU and the TM-4 module
3TM-4 module is disconnected or faulty

Resolution Steps

Check the TM-4 module for proper connection and functionality. Verify the wiring between the control panel and the TM-4 module, and ensure the module is addressed or configured correctly if applicable.

Manual References(1)

1notifierNFS2-640Datasheet2017Open

Field Notes

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Related Codes

INVREPThe device has returned a response to the panel that the panel did not expect.LO VALThe detector chamber reading is too low, or the detector is not operating properly. In CLIP mode, this may also indicate a failure of the thermistors, CO element, or infra-red element, or a freeze warning.INST ON L1No devices are installed on the system.PREALMThe control panel activates a Pre-Alarm Warning when a detector exceeds its programmed Pre-Alarm Alert or Action level, providing an early warning of incipient or potential fire conditions.TROUBLThe system enters System Trouble mode when the control panel detects an electrical fault or a trouble condition on a supervised circuit or module.