Honeywell C300 User Manual

R500
April 2017
Series 8 C300 Controller User's Guide
Honeywell
239
10. C300 Controller Troubleshooting
10.4. Fixing common problems
Solution
Replace primary controller module. Refer to the section C300 Controller
module and IOTA replacement for details.
Check to see if controllers synchronize.
Cause 5
Primary IOTA bad.
Solution
Replace primary IOTA.
Reinstall the original primary controller module on the new IOTA. Refer
to the section C300 Controller module and IOTA replacement for details.
Check to see if controllers synchronize.
Cause 6
Software problem.
Solution
Contact Honeywell TAC.
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 controller shows FAIL or mMBE.
 In the Monitoring tab, the C300 Controller icon turns red.
Cause
The 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 controller. If error
persists, replace the controller. Refer to the section C300 Controller
module and IOTA replacement for details.
Check the Trace log for breadcrumbs that occurred prior to the event.
Refer to the section Using CTools for capturing diagnostic data for more
information. Provide the results of the trace log to TAC for analysis.

Honeywell C300 Specifications

General

Brand	Honeywell
Model	C300
Category	Controller
Language	English