SMOKE MULTI: NFS2-640 Trouble Code | Fire Alarm Resource Center

What This Code Means

This is a Type Code for a multisensor smoke detector (such as the Acclimate Plus™) operating in CLIP mode. It indicates that the detector has been activated.

Common Causes

1Smoke or fire detected by the multisensor device
2Activation of an Acclimate Plus™ detector
3Environmental conditions triggering the sensor

Resolution Steps

Identify the location of the activated detector. Investigate the area for fire or smoke. If no fire is present, check for environmental factors or detector contamination. Reset the panel after the condition is cleared.

Manual References(1)

1notifierNFS2-640Datasheet2017Open

Related Codes

INVREPThe device has returned a response to the panel that the panel did not expect.INST ON L1No devices are installed on the system.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.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.

Notifier NFS2-640

What This Code Means

Common Causes

Resolution Steps

Manual References(1)

Field Notes

Related Codes

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