Fire System Monitoring Panels
Chubb Fire & Security Pty Ltd
Technical Manual
Page 19 of 22
4: Troubleshooting
Failure of a fire system monitoring panel to function properly will likely be caused by one or more of the
following conditions:
1. Failure of the power supply
2. Incorrect installation
3. Damaged wiring or corrosion
4. Component failure
When a failure occurs and the cause is not known, check as many of these items as is practical before
starting a detailed check.
If possible, obtain information about any changes taking place that may have affected the system. When
troubleshooting, the fault may often be discovered through visual inspection alone. Some faults, such as
burned out relay tracks or wiring can be located by sight or smell. Check for smoke or the odour of burned or
overheated parts. Look for loose connections. Visual inspection is also useful in avoiding damage to the
system which could occur through improper servicing methods. Many faults on the system can be caused by
problems with power. Ensure battery and line voltages are checked prior to troubleshooting the system.
The effectiveness of the following tables is greatly increased by first reading the entire manual. A service
technician must have a sure understanding of the functionality of system before attempting corrective
maintenance. These tables contain instructions to aid a technician in the causes of common system faults
.
Power supply
Symptom
Probable Cause
Corrective Action
No LED’s
on
1. No power to panel
1. Check fuses, power supply and
connections.
2. Check equipment isolation switches
Table 3 - Power supply
Alarm
Symptom
Probable Cause
Corrective Action
Green Power
L
L
E
E
D
D
,
Red Alarm
L
L
E
E
D
D
,
,
Red
Discharged
L
L
E
E
D
D
, Red
Shutdown
L
L
E
E
D
D
,
,
A
A
m
m
b
b
e
e
r
r
Low
pressure
L
L
E
E
D
D
all
on
.
Buzzer sounding once every
10 seconds.
1. Discharge Pressure
Switch operated
2. Manual release
initiated by operator.
3. Automatic release by
detection device.
1. Investigate cause of discharge (manual,
automatic or both)
2. Service system.
3. Check Discharge pressure switch for correct
operation.
4. Check that the pressure switch Deutsch
pins are in the correct position:
Table 4 - Alarm
Fault
Symptom
Probable Cause
Corrective Action
Green Power
L
L
E
E
D
D
on
and,
Low pressure
L
L
E
E
D
D
,
,
A
A
m
m
b
b
e
e
r
r
on
.
Buzzer sounding once every
10 seconds.
1. Low Pressure Switch
operated
.
1. Investigate cause of pressure loss
2. Service system.
3. Check Low pressure switch for correct
operation
4. Check that the panel and pressure switch
Deutsch pins are in the correct position:
Table 5 - Fault
