5.6 System Fault
FireClass Fire detection system FireClass Panels
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Service and Maintenance Doc.
version1
If the firmware encounters any of these conditions the
system is held in a “Safe State” (described as state of the
panel in which it is not functional and is no longer mon-
itoring for fires) by performing the following actions.
Write to Non-Volatile memory a signature ndicating a
“System Fault” has occurred.
Reset the system via watchdog timeout, this will cause
a “System Fault” indication.
Upon restart the Non-Volatile memory is read, the signa-
ture id is found indicating a fault and the system halts.
Recovery from Safe State
To recover the system from “Safe State” (as described
above) will require the non-volatile RAM to be cleared by
performing the following actions:
Fit header link H2 on the CPU card.
Rebooting the system and wait at least 30 seconds
Remove header link H2 and reboot system.
