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NO SIGtrouble

Notifier NFS-320: NO SIG

Notifier NFS-320·0 views·0 field notes

What This Code Means

The device (module or detector) is not responding to the poll.

Common Causes

  • 1Device not connected
  • 2Incorrect addressing
  • 3Device failure

Resolution Steps

Determine whether the device is functional, and connected and addressed properly on the SLC.

Manual References(2)

Field Notes

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Related Codes

TERMINAL SUPERVISORYThere is a communication error with the CRT-2 terminal.CO TBLThe CO element on the detector is not working properly.Low Chamber valueThe detector chamber value has dropped below the allowed limit.DIRTY 1The detector is dirty and needs cleaning.BAT.BACKUP RAMThe RAM battery backup voltage is low.

Related Questions

How does the NFW2-100 ground fault detection work?What battery size does the NFW2-100 require, and how do I silence a battery trouble condition after replacement?What batteries does the NFS-320 use, and when is an external battery box required?
All NFS-320 trouble codesNFS-320 panel page