Notifier NFS2-640

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What This Code Means

A trouble condition occurring on a Panel Circuit, which includes ICM-4RK, CRM-4RK, VCM-4RK, or DCM-4RK panel modules connected to the control panel.

Common Causes

1Electrical fault on the circuit
2Open circuit on supervised wiring
3Short circuit on supervised wiring
4Module failure or disconnection

Resolution Steps

Press the ACKNOWLEDGE/SCROLL DISPLAY key to silence the panel sounder. Identify the specific device address and type code shown on the LCD display. Inspect the wiring and connections between the control panel and the ICM-4RK, CRM-4RK, VCM-4RK, or DCM-4RK modules for faults.

Manual References(1)

1notifierNFS2-640Operations2013p. 22Open

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.