u can use the Installation guide..
Red = System critical. View system board LEDs to identify component in critical state.
Amber = System degraded. View system board LEDs to identify component in degraded state.
Green = Normal.
The front panel and internal LEDs are used to help diagnose a server failure. When an internal component fails, the indication is made on an internal component LED (amber) and on the front panel. If the item is serviceable without removing the server hood, as in the case of a redundant power supply failure, the External Health LED will illuminate. If the item is serviceable by removing the hood, as in the case of a fan failure, the Internal Health LED will illuminate.
If no failures have occurred, the system health LEDs will be green. If a failure has occurred, but a redundant feature has enabled the system to continue running, the LED will be amber. If the failure is critical and is/has caused the system to shutdown, the LED will be red. These LEDs serve as local indicators for several failure conditions. Insight Manager will continue to report these, and many other failure conditions, as well.