This document describes how to troubleshoot the Cisco Email Security Appliance (ESA) after the system indicator light begins to blink orange.
What does it mean when my ESA system indicator light blinks orange?
If the system indicator light on your appliance blinks amber/orange, it means that there is a serious hardware problem that requires immediate intervention.
Behind the bezel of your appliance (except on C1x0 and S1x0 Series appliances) there is a small LCD panel that displays additional error information. Tilt the bezel downward (no tools required) and copy the error code that appears on the display. Then, contact Cisco Content Security customer support in order to resolve the issue.