Appendix A - Message Action List
There are some fault events that are not self clearing and will require manual intervention.
Latching fault events
The following faults are identified as latching events.
¨
Slave devices lost (associated with Tee breaker)
¨
Loop allocation fault
¨
Invalid loop configuration
How to clear a latching fault event
To clear a 'latching fault' it is necessary to re-allocate the loop circuit by Power-down, Power-up and Start detection method, see page 24.
Repairable fault events
¨
Loop (partial) short circuit.
How to repair this type of fault event
To repair the fault at the control panel use the repair function, see page 30.
Message Action list
"
Only the messages that are applicable will appear on the display of the control panel.
Message meaning..
..possible action
24V supply failed The panel power supply has failed Check the mains fuse and wiring. Replace PSU..
Allocation HW Error Device loop breaker relay has not closed or End-2 is faulty
or relay is stuck i.e. closed. The device may not be correctly
fitted.
Check the device connections and replace if necessary.
Allocation TX Error The panel is not getting a response when communicating
with a device on the loop circuit.
Check the device. Also check cable routing and length
(measure resistance and capacitance of cable).
Batteries Discharged The panel 12V 7Ahr batteries are discharged. Replace batteries in the panel.
Commissioning instructions
72 4188-949 issue 3_05/10_Nano Comms inst.
Appendix A - Message Action List
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