Honeywell NOTIFIER NFS2-640 Operation Manual page 17

Operation of the Control Panel
3.5.2 How to Respond to a System Trouble
If the control panel indicates a trouble, you can do the following:
1. Press the
SYSTEM TROUBLE
security and supervisory signals.
NOTE: Pressing the
pressing the
an alarm exists in the system.
2. The control panel sends an Acknowledge message to the remote annunciators, history buffer,
installed printers, and CRT-2s.
3. Check the trouble message for the location and type of trouble.
TROUBL MONITOR
TROUBL MONITOR
4. Correct the condition causing the trouble. If the trouble clears, the control panel sends a Clear
Trouble message to the History buffer and installed printers FDU-80 annunciators, and
CRT-2s.
If all troubles clear and no supervisory signals or fire alarms exist, the control panel does the fol-
lowing:
• Returns to Normal operation (indicated by the "System Normal" message)
• Sends a "System Normal" message to the LCD display, History buffer and installed printers,
FDU-80 annunciators, and CRT-2s
• Restores troubles automatically - even if troubles are not acknowledged
If multiple trouble conditions exist in the system, the LCD and optional CRT-2 and FDU-80s auto-
matically step through each trouble every 3 seconds in the following order:
1. Alarms, in order of address
2. Supervisory, in order of address
3. Troubles, in order of address
Press the
for 1 minute, then begins to automatically step through remaining troubles. To manually step
through remaining troubles, press the
Refer to Appendix D, "Point and System Troubles Lists", on page 75 for explanations of troubles
that appear on the display.
26
/
ACKNOWLEDGE SCROLL DISPLAY
LED from flashing to steady—regardless of the number of troubles, alarms,
SIGNAL SILENCE
/
ACKNOWLEDGE SCROLL DISPLAY
Status banner
A C K N O W L E D G E
Figure 3.9 Sample Acknowledge Message
MODULE ADDRESS
MODULE ADDRESS
Figure 3.10 Sample Trouble Messages on CRT-2 or Printer
/
ACKNOWLEDGE SCROLL DISPLAY
key to silence the panel sounder and switch the
key when only troubles exist, gives the same result as
key. The
SIGNALS SILENCED
Time and date of Acknowledge
0 3 : 1 5 P 0 4 1 5 1 5 T u e
M021 Z00 OPEN CIRCUIT
M022 Z00 OPEN CIRCUIT
key and the display stops on the current trouble event
/
ACKNOWLEDGE SCROLL DISPLAY
NFS2-640 Operations P/N 52743:L4 06/10/19
System Trouble Mode of Operation
LED does not light unless
08:10A 042115 2M021
08:12A 042115 2M022
key.