Ziton ZP3-ECU, Руководство по обслуживанию

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Chapter 3: Fault finding – ECU faults
22 ZP3-ECU Extinguishing Control Unit Maintenance Manual
Extinguishant discharge siren fault
Indications
• The Extinguishing Bell Fault LED on the ECU main board illuminates (see
Figure 1 on page 16).
• The Fault LED on the ECU front panel illuminates.
• A GNFLT fault message is displayed on the fire alarm control panel and the
panel buzzer sounds. The Fault LED on the fire alarm control panel also
illuminates.
GNFLT Zone 001 Dev 5001 Event 002
Possible causes
• The EOL resistor across the extinguishant discharge siren is not inserted.
• Monitored wiring is open or short-circuited.
• Faulty fire bell fuse.
Corrective actions
1. Press the Accept/Panel Silence button to silence the buzzer to acknowledge
the fault.
2. Inspect the EOL resistor. If it is missing, insert one between terminals 7 and 8
of TB1 on the ECU main board.
3. Check the continuity of the monitored wiring.
4. Inspect fire bell fuse, replace if necessary.
5. Reset the panel.