Fixing common problems
Fatal ECC error
R301.1 Experion C300 Controller User's Guide 225
11/06 Honeywell
Cause 6
Software problem.
Solution
Contact Honeywell SSC.
Fatal ECC error
The C300 Controller software has detected a fatal Error Checking and Correction (ECC)
condition that can be a multiple-bit error or excessive single-bit errors in the main
Random Access Memory (RAM).
Diagnostic Check
• The 4-character display on the C300 Controller shows FAIL or mMBE.
• In the Monitoring tab, the C300 Controller icon turns red.
Cause
The C300 Controller software has detected a failure that does not allow
operation to continue. There can be many causes for a failure including
hardware.
Use the CTools utility
to capture diagnostic data for the device to
determine the possible cause before proceeding. If the error occurs in
the backup RAM, a fault is indicated. If the error occurs in main RAM,
the module freezes with mMBE on the display.
Solution
Try shorting the reset pads on the IOTA to re-start 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 Honeywell Solutions Support
Center (SSC) for analysis.
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