Doc. No. 503-0800ZE-M-01
ZP3-ECU Maintenance Manual
Page 10
Issue 1 (01/08/2006)
Possible Causes
•
Device addresses have been swapped within the system after device acceptance.
•
System interference caused by faulty wiring.
Corrective Actions
1.
Press the ACCEPT button to accept the fault.
2.
Check the system specification to see which type of device should be at the address in
question. Replace the incorrect device with one of the correct type.
3.
Reset the panel.
Device Offline
The panel checks all devices during initialisation on power up, and notes the device type at each
address. This process can also be initiated through the Setup menu (see Commissioning Manual).
If an ECU device is missing at an address that was previously occupied then the panel detects
that it is offline.
Indications
•
Yellow Fault LED is lit.
•
Fault buzzer sounds.
•
Event is shown on the display, for example:
DEV OFFLINE Zone 001 Dev 001
Event 001
Second Floor, Laundry Room
•
Event is printed (if printer configured).
Possible Causes
•
An isolator on the line has caused the device to open circuit.
•
Field wiring is disconnected or there is an open circuit.
Corrective Actions
1.
Press the ACCEPT button to accept the fault.
2.
Note the faulty device and then show the analogues for that device on the display. Check the
first analogue reading. If analogue reading 1 is almost at zero then the panel cannot
communicate with the device.
3.
Install a replacement if the device is missing. If the device is present then remove it and check
the line for pulsing voltage on the device terminals. If there is no line voltage present then fix
the fault in the field wiring or replace the appropriate line isolator.
4.
Make sure the device is correctly in place and reset the panel.
