Honeywell Experion C300 - Troubleshooting Display Shows FAIL; Isolated (Lonely) Node Troubleshooting

Fixing common problems
Display shows FAIL
226 Experion C300 Controller User's Guide R301.1
Honeywell 11/06
Display shows FAIL
The C300 Controller detects failure during system integrity checks, such as Watch Dog
Timer (WDT), error detection circuits, Field Programmable Gate Array (FPGA)
readback, microprocessor static configuration registers, and Read Only Memory (ROM)
checksum.
Diagnostic Check
• The 4-character display on the C300 Controller displays FAIL.
• In the Monitoring tab, the C300 Controller icon turns red.
Cause
The C300 Controller software has detected a background diagnostic
failure that does not allow operation to continue.
Solution
Try recycling power to the C300 Controller. If error persists, replace the
controller. See C300 Controller module and IOTA replacement for
details.
Check the Trace log for breadcrumbs that occurred prior to the event.
See Using CTools for capturing diagnostic data for more information.
Provide the results of the trace log to our Solutions Support Center
(SSC) for analysis.
Isolated (lonely) Node
For redundant C300 Controller pair, Fault Tolerant Ethernet (FTE) communications with
partner and FTE network are lost.
Diagnostic Check
• The Primary C300 Controller negotiates whether or not to initiate a
switchover. If the Secondary was known to be in better condition than
the Primary at the time of fault determination, then the Primary should
fail so the Secondary will switchover. But, the new Secondary (old
Primary) still cannot restore FTE communications.
• The Secondary C300 Controller should reboot once, in an attempt to
restore communications. The Primary controller will be able to report
the problem in the Secondary. If the Secondary cannot restore FTE
communications, it would still be able to resynchronize over the
redundancy link and be a partially functional backup.
Cause 1
The Secondary C300 Controller is defective.
Solution
Replace the Secondary C300 Controller that initiated switchover when
fault was detected. See C300 Controller module and IOTA replacement
for details.