24 NFS2-640 Operations P/N 52743:L4 06/10/19
Operation of the Control Panel Mass Notification Mode of Operation
• Initiates any Control-By-Event actions
• Activates special zone ZFF
• Sends an MN Trouble message to the proprietary receiver via the network, if applicable
3.4.6 How to Respond to an MN Trouble
If the control panel indicates an MN trouble, you can do the following:
1. Press the
ACKNOWLEDGE/SCROLL DISPLAY key to silence the panel sounder and switch the
TROUBLE LED from flashing to steady. An Acknowledge message is sent to the remote
annunciators, history buffer, installed printers, and CRTs. Pressing the
ACKNOWLEDGE/SCROLL
DISPLAY will acknowledge all MN trouble events on the fire panel.
2. Check the trouble message for location and type of trouble.
3. Correct the condition causing the trouble condition. If the trouble clears, the panel sends a
Clear Trouble message to the History Buffer and installed printers, annunciators and CRT-2s.
(troubles will clear from the fire panel even if they are not acknowledged.)
4. If no other events are present on the fire panel, a “System Normal” message is sent to the LCD
display, remote annunciators, history buffer, installed printers, and CRT-2s and the fire panel
returns to normal operation.
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