Notifier NFS2-640

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What This Code Means

The status banner displays ACTIVE when a monitor module programmed with a Trouble Monitor Type Code (such as AUDIO SYSTEM or POWER MONITR) is activated. These modules monitor external system functions that produce trouble signals.

Common Causes

1Fault in monitored audio equipment or amplifiers
2Power supply fault detected by a power monitor module
3Activation of a monitored system function that indicates a trouble condition

Resolution Steps

Press the ACKNOWLEDGE/SCROLL DISPLAY key to silence the panel sounder. Check the LCD display for the specific location and type of device reporting the trouble. Investigate and correct the condition causing the trouble in the monitored equipment. The panel will automatically return to normal once the condition is cleared, as these modules are non-latching.

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.