Fault indications
All fault repairs should be
carried out by the
servicing organisation.
In a fault condition:
·
the common
Fault light
is lit
·
appropriate
Fault light
is also lit
·
internal Fault Buzzer sounds
intermittent tone
·
Multiple faults are
simultaneously annunciated
when this does not cause
confusion.
NOTE:
Normally the fault lights
will be automatically extinguished
once the fault condition is
rectified.
NOTE:
If the system detects a
fire during a fault condition the
fault indicators may be
extinguished.
How to silence the fault
buzzer
q
Press the 3 digit code, if
required and then press Cancel
Buzzer.
q
Notice the buzzer is silenced
but visual indications remain
active.
NOTE:
The sounder circuits
are pulse monitored for
failure.
Fire Panels
Fault indications
4188-424 issue 4_Part 1_10-09
16
Cancel
Buzzer
System
Reset
Sound
Alarms
Silence
Alarms
1
2
3
4
5
6
7
8
9
0
v
Shift or Function
key
Shift
Numeric
keypad
Display test
key
Display
Essential controls
Zones
FIRE
Fault
System
Power
Earth
Sounder
Disabled
Test
Delay
Access /
Function
Normally lit
to indicate
Power supply
healthy
The light is lit when
the Shift/Function key is pressed
or there is an entry to controls
with coded access
ZONE Fire, Fault or Disablement indications
Other Fault
indications
1
red
yellow
2
3
4
5
6
7
yellow
yellow
yellow
green
8
Power
yellow
Figure 15 Fault indicators
Faults
Cause
What is a Zone
fault?
A zone fault occurs when a zone circuit cable is open
circuit or short circuit, or the end-of-line capacitor unit
has been disconnected or a detector has been
removed.
What is a
Sounder fault?
A sounder fault occurs when a sounder circuit cable
is open circuit or short circuit, or the end-of-line
resistor unit has been disconnected.
What is a Mains
power fault?
A mains failure occurs when the mains power supply
to the panel is removed. This can occur on mains
fuse failure or mains supply disconnection.
What is a Battery
power fault?
A battery supply failure occurs when the battery
supply to the panel has failed (due to aging process)
or battery voltage is too low or is disconnected or the
battery fuse has failed.
What is an Earth
fault?
An earth fault occurs when there is an electrical path
for current flow from the system to earth connections.
What is a Repeat
panel fault?
A Repeat Panel fault occurs when a fault is detected
within the Repeat Panel
What is a Repeat
panel link fault?
A repeat panel link fault occurs when there is a
communication failure between the control and
repeat panels or if the link has been removed or
damaged.
What is a System
Fault?
A system fault occurs in the event that the
microprocessor or software fails.
What is a charger
fault?
A charger fault occurs when the charger will not
switch off or will not provide charge when on.
What is a power
fault?
A power fault occurs when there is an incorrect 24V
level or fuse failure. Also occurs if the sounder output
supply is at the incorrect level or overloaded during
alarm condition.
Table 3 Types of faults