FAULT DIAGNOSIS
Fault indications
When a fault occurs on a critical part of the fire alarm system, the panel responds by activating its internal sounder
and illuminating the General Fault light and any other Fault light(s) relating to the fault. The panel’s fault output
will also activate (provided it has not been disabled).
The type of faults typically indicated at the fire alarm panel are highlighted below. A more precise diagnosis of
fault conditions is available at access level 3 (the summaries below refer to the sections you should read later
in this manual for further information). Unless otherwise stated, repairing any particular fault condition will
automatically clear the fault from the panel. If the panel is reset whilst faults still exist, the faults will reappear
after a short period of time.
Note: It is possible to mute the panel’s internal sounder at any time by momentarily pressing the SILENCE INTERNAL
SOUNDER button.
LPCB APPROVED CFP ALARMSENSE 2/4/8 ZONE FIRE ALARM PANEL
INSTALLATION & MAINTENANCE MANUAL • Approved Document No. DFU7002020 Rev 4 • Page 18 of 24
General Fault
This light flashes yellow when there is a
fault on any part of the fire alarm system.
It is always lit in tandem with at least one
other Fault light which displays precise
information on the type of fault detected.
Zone Faults
All of the panel’s zone circuits (up to eight) are monitored for open
and short circuit faults and detector head removal (unless there is
an alarm condition or the zone is in test or disabled). All faults are
indicated by the relevant Zone Fault light(s) pulsing yellow. The
Sounder Status light will also pulse yellow if sounders are fitted.
For advice on how to correct this fault see page 19, section 1.1.
Supply
Present
This light
should be lit
green at all
times. If off, see
power supply
faults, page 19,
section 1.2.
Power Supply Fault
This light flashes yellow when
one or more of the following
has occurred:
1) The Mains supply is too low or
has failed completely.
2) Mains fuse (F1) has ruptured.
3) Battery fuse (F2) has ruptured.
4) The battery supply voltage is
too low.
5) The panel’s power supply unit
is faulty.
For advice on how to correct this
fault see page 19, section 1.2.
Remote Output Status
This light flashes yellow
when there is a fault on
the output’s aux. 24V
supply.
For advice on how to deal
with this type of fault see
page 22, section 1.6.
System Fault
This light flashes yellow
when one or more of the
following has occurred:
1) There is a microprocessor
“watchdog” fault.
2) The microprocessor’s
site memory has been
corrupted.
3) The microprocessor’s
program menu has been
corrupted.
4) The Main Control PCB is
faulty.
For advice on how to
correct this fault see page
21, section 1.3.
Repeater Fault
This light flashes
yellow when the
master panel cannot
communicate with
one or more repeater
panels (if fitted).
For advice on how to
correct this fault see
page 22, section 1.4.
Sounder Status
This light pulses yellow
when one or more
of the following has
occurred:
1) A conventional
sounder circuit has a
fault.
2) A sounder on a zone
circuit has a fault. The
relevant Zone Fault
light(s) will also pulse
yellow.
All sounder circuits are
monitored for open
and short circuit faults
(unless disabled or in
an alarm condition).
For advice on how to
correct this fault see
page 22, section 1.5.
1
2
3
7
5
4
6
8
supply
present
remote
output
general
fault
power
supply
fault
system
fault
repeater
fault
sounder
status
auxiliary
output
status
output
delays
test
remote
output
status
fault
output
status
general
disablement
accessed
Zone fault/disabled/test
