ZP3-ECU Maintenance Manual
Doc. No. 503-0800ZE-M-01
Issue 1 (01/08/2006)
Page 15
Extinguishing Control Unit Power Fault
Indications
•
Fault message is displayed on the ZP3/ZP5 Control Panel and the panel buzzer sounds. The
Fault LED on the Control Panel also illuminates.
•
Display indicates a fault as PWRFLT Zone 001 Dev 5001 Event 002.
Probable Cause
•
Total loss of power to the Extinguishing Control Unit.
•
Loss of power to a section of the Extinguishing Control Main Board.
Corrective Actions
1.
Press the ACCEPT button to accept the fault.
2.
Check if the Green Power LED indicates on the Extinguishing Control Unit. If not it would
indicate a complete loss of 24 Volt power supply. Repair or replace as required.
3.
If the Green Power LED illuminates, then check for local power loss on the PCB. Rectify or
replace the board.
4.
Reset the panel.
Extinguishing Status/Repeater Unit Fault (Optional)
Indications
•
The indicating LED’s that should display on the Extinguishing Status Unit or Extinguisher
Repeater Unit are not illuminating.
•
Operation of Controls on the Status Unit does not evoke appropriate response on the
Extinguishing Control Unit.
Probable Cause
•
Wiring connections to the Status or Repeater Unit are open circuit or incorrect.
•
Ribbon cable connected from Status Unit Main Control Board to Display board is loose.
Corrective Actions
Inspect and/or rectify terminal wiring and/or ribbon cable connection. Once corrected, the unit
will respond appropriately.
