User manual

9LST700 SERIES USER MANUAL • Approved Document No. DFU7001003 Rev 4
LST700 SERIES FIRE ALARM PANEL
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 hasn’t been disabled). The type of
faults typically indicated at the fire alarm panel are described below:-
Zone Fault
The relevant zone fault light flashes when there is a
wiring problem on a zone or a detector has been removed
from its base. It should be noted that any alarms raised on
the faulty zone(s) may not be recognised by the fire alarm
panel until the fault condition has been cleared.
Power Supply Fault
The power supply fault
light flashes when the mains
supply has failed, or the
standby batteries or its
charger are faulty.
If the mains supply fails, the
panel will only operate for
the standby period dictated
by the size of the batteries
fitted. If the batteries or
charger fail at the same
time as the Mains, the
Panel will be inoperative.
Sounder Fault
The Sounder
Status light flashes
when there is a
wiring fault on the
sounder circuits.
Depending on
where the fault has
occurred, one or
all of the alarm
sounders may no
longer be
operative.
System Fault
The system fault light flashes
when the panel’s micro proc-
essor
has reset, typically after
excessive
electrical interference,
or if the contents of its memory
have been corrupted. This fault
can only be cleared by pressing
the Control Panel Reset button
. If the fault re-occurs
within two minutes, this is
indicative of a corrupt memory
and expert advice should be
sought.
General Fault
The general fault light flashes 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 conveys more precise
information on the type of fault detected.
Repeater Fault
The repeater fault
light flashes when
the connection
between a repeater
panel (if fitted) and
the master panel
fails. Depending
on where the fault
has occurred, some
or all of the
repeaters may no
longer operate
correctly.
In the event of a fault condition
■ Mute the panel’s internal sounder by pressing the Silence Internal Sounder button
(The panel does not have to be in access level two to do this)
.
■ Note the fault(s) down in the Log Book at the back of this manual and take appropriate action to
correct it / them. See User Responsibilities section on page 5.
When a fault has been rectified the indicator light for that fault is automatically turned off. If all
faults are cleared, the general fault light will go out, and the panel’s internal sounder will be silent (if
not already muted). If the fire alarm panel is reset any existing fault(s) will reappear as before and
the silencing process will have to be repeated.
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supply
present
remote
output test accessed
general
disablement
fault
output
status
remote
output
status
general
fault
power
supply
fault
system
fault
repeater
fault
sounder
status
auxiliary
output
status
output
delays
FAULT CONDITIONS
Fault Output,
Remote Output or
Auxiliary Output
Fault
Flashes when a wiring
fault has been detected
on the lit output’s
transmission path.