OPENtrouble

Notifier NFW2-100: OPEN

Notifier NFW2-100·0 views·0 field notes

What This Code Means

This trouble description indicates an open circuit condition on an addressable device or a notification appliance circuit (NAC).

Common Causes

1Open circuit on an addressable device
2Broken wire or loose connection on the SLC loop
3NAC circuit voltage in the range of -2.3 to -2.5 VDC
4Missing or incorrect 4.7 k ohm End-of-Line resistor on a Style Y (Class B) NAC

Resolution Steps

Pressing the Acknowledge/Step or Alarm Silence key will cause the pulsing piezo to silence and the system Trouble LED to change from flashing to on steady. Locate the device or circuit indicated on the display and check for an open circuit condition, ensuring all wiring is intact and connections are secure.

Manual References(1)

1notifierNFW2-100Installation2005p. 127, 139, 172, 3, 2, 13, 126, 34, 36, 149, 11, 5, 9, 107, 169, 125, 146, 6, 180, 124, 177, 28Open

Field Notes

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Related Codes

TEST FIndicates a detector has failed the automatic test operation of its sensing chamber and electronics.COMM FAULT 1The control panel has failed 10 total attempts to communicate with the primary Central Station phone number.NAC 1 FAULTA fault condition (open or short) on Notification Appliance Circuit 1.AC_FAILThe control panel has lost primary AC power.INV IDIncorrect device code (Type ID) has been programmed for an installed device.