Chapter 3: Fault finding – ECU faults
ZP3-ECU Extinguishing Control Unit Maintenance Manual
17
General faults
There are a number of faults identified by the control panel as a general fault on
the ECU.
Indications
• The panel buzzer sounds.
• The display indicates a GNFLT fault, for example:
GNFLT Zone 001 Dev 5002 Event 012
Carbon dioxide ECU storage room
• The event is printed (if a printer is configured).
• The appropriate red Zone LED illuminates to indicate the zone in which the
fault occurred.
Possible causes
A fault on the control system falls into one of the following categories:
• Manual extinguishant release faults.
• Extinguishant actuation faults.
• Extinguishant pressure faults.
• Fire bell fault.
• Extinguishant discharge siren fault.
Corrective actions
1. Press the Accept/Panel Silence button to silence the buzzer and to
acknowledge the fault.
2. Refer to the paragraphs below with regard to the type of fault displayed.
3. Reset the panel.
