93-331-73 Issue 2 Page 24 of 32 © Protec Fire Detection PLC 2013
13.0 Fault Rectification Guidelines
Detector Circuit Fault
Disconnect the faulty zone and connect a correct end of line unit (resistive or capacitive) directly
at the 3200 zone terminals. If the zone fault clears the zone wiring, end of line unit and detector
base connections should be thoroughly investigated, and any faults rectified. In particular check
that all detectors are connected properly into their bases.
If the fault remains check the end of line programming (see section 14.6) and ensure it is set-up
for the type of end of line monitoring being used. If the fault still remains either the end of line, or
the main board is faulty.
Alarm Open Circuit Fault
Disconnect the faulty alarm circuit and connect an end of line unit directly at the 3200 alarm
terminals. If the alarm fault clears the alarm wiring, end of line unit and sounder connections
should be thoroughly investigated, and any faults rectified. In particular ensure all sounders are
polarity protected and suppressed.
If the fault remains the main board is suspect and should be replaced.
System fault
An internal software fault has been detected. Enter the user code, press Silence then Reset . If
the fault re-appears within 2 minutes the main board is suspect and must be replaced.
Power supply fault
A fault has been detected in the power supply, charger or batteries.
Verify the integrity of the mains input. If it is acceptable, check the mains fuse (FS1) has not
ruptured, replace with a 1A HRC 20mm if necessary.
Check the battery fuse (FS2). If it has ruptured replace with a 1Amp F 20mm if necessary.
If no problems are found with the mains input, mains fuse or battery fuse, remove the battery and
measure the dc Voltage across the battery terminals on the main board. If the Voltage is above
28V the main board is suspect and should be replaced.
Replace the battery with a new one of the same type, if the power supply fault remains the main
board is suspect and should be replaced.
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