Notifier NFS 2-8 - Fault Finding Chart

997-492-000-5, Issue 5
June 2009
24
EN 54 & ISO 7240 2-8 Zone Conventional Fire Panel - Installation & Configuration Manual
No indication on panel - buzzer
not sounding
Panel in Fire state.
No power to panel. Check mains supply;
Check total battery voltage is
>21V.
Check mains supply to panel;
Check battery connections
Carry out visual check;
if problems persist replace
units/batteries until fault clears.
Indication
Action
Possible Cause
Common Fault Indication plus:
AC mains failed - panel operating on
batteries;
Batteries - poor connection/
disconnection;
Battery charger fuse blown;
Batteries reversed;
Batteries - deep discharge state
(mains supply on).
Auxiliary output - short circuit or
overload
Incorrect EOL device.
Sounder circuit fault - open or short
circuit.
Zone circuit fault - open or short
circuit.
Zone circuit fault - partial open or
short circuit; excess capacitance/
cable length; dual or no EOL device;
incorrect configuration of EOL.
Check cables.
Change EOL configuration type.
Change EOL device(s)
Carry out visual check.
Carry out visual check.
Reset system. If unable to
reset or problem re-occurs -
replace panel.
Carry out visual check.
Carry out visual check.
Power Supply Fault indication
plus intermittent buzzer.
Auxiliary Fault indication plus
intermittent buzzer.
Sounder Fault/ Disabled flashing
plus intermittent buzzer.
Zone Fault/ Disabled/ Test
flashing plus intermittent buzzer.
Earth Fault indication plus
intermittent buzzer.
System Fault indication plus
continuous buzzer.
System Fault indication plus
Common Fault indication plus
intermittent buzzer.
Zone Fault/ Disable/ Test plus
Disablement steady indications.
Zone Fault/ Disable/ Test plus
Test steady indications.
External sounders operating, no
buzzer activation.
Unable to reset.
Go into Test/ Disable Options
and re-enable zone.
Go into Test/ Disable Options
and take zone out of Test mode.
Remove input.
Turn key (cover on only);
check cause of alarm - ensure
broken glass replaced/ smoke
cleared, etc.
Processor failed.
Expansion PCB(s) missing or
disconnected..
Relevant zone disabled.
Relevant zone in Test mode.
Class Change input operated.
Key in Access Level 1 position
(cover on only);
Alarm condition stills exist.
Unwanted connection of external
cabling to earth.
System Fault indication plus
intermittent buzzer.
Expansion PCB(s) missing or
disconnected.
Re-fit / re-connect Expansion
PCB(s).
Re-fit / re-connect Expansion
PCB(s).
6.10 Fault Finding Chart
Use this chart to identify the cause of possible problems
when commissioning your system.