Controller Recovery using Flash Memory Technology
It is possible for a write error to occur while information is being saved in the controller’s memory. If this occurs, the system always saves a backup of the data.
To recover from a write failure:
•Shut off the controller, wait 15 seconds, then restart the controller.
The boot sequence detects the write error and attempts to restore the backup file.
It is also possible, although rare, that the backup and original file could both become corrupt. If this occurs, then reset the controller to factory default parameters before proceeding. However, all parameters you’ve previously stored are lost and you’ll need to set up the controller from the beginning. You should record what settings you use in the controller
system if this occurs.
The following screens display while the controller writes to flash memory. Again, do not cycle power while these two screens display.
WRITING PARAMETERS
TO FLASH-PLEASE WAIT
SAVING BACKUP
TO
Note: The controller needs about 30 seconds for saving to flash memory. If the controller doesn’t clear this display within 60 seconds, you may need to cycle power. This rare type of problem is caused by a write failure not detected by the controller. This rare condition usually requires a complete factory default reset for full recovery.
| Chapter 6: Troubleshooting | 48 |
