Rockwell Automation 2080-LC20-20QBBR Micro820 20-point Programmable Controllers User Manual - Manual (Page 121)

Troubleshooting Appendix B
Rockwell Automation Publication 2080-UM005A-EN-E - December 2013 113
Error codes This section lists possible error codes for your controller, as well as recommended
actions for recovery.
If an error persists after performing the recommended action, contact your local
Rockwell Automation technical support representative. For contact information,
go to
http://support.rockwellautomation.com/MySupport.asp
Indicator
Behavior Probable Error Probable Cause Recommended Action
All indicators off No input power or
power supply error
No line power Verify proper line voltage and connections to the controller.
Power supply
overloaded
This problem can occur intermittently if power supply is overloaded when
output loading and temperature varies.
Power and FAULT
indicators on solid
Hardware faulted Processor hardware
error
Cycle power. Contact your local Allen-Bradley representative if the error
persists.
Loose wiring Verify connections to the controller.
Power on with
solid indicator and
FAULT indicator
flashing
Application fault Hardware/software
major fault detected
For error codes and status information, refer to the Connected Components
Workbench online Help
Power on with
solid indicator and
FAULT indicator
flashing
Operating system fault Firmware upgrade
unsuccessful
See Flash Upgrade Your Micro800 Firmware on page 121 .