For a POE port, Blinking Amber signifies that the port is linked and traffic is being received or transmitted by the interface but PoE power is not being supplied.
PoE power may have been deactivated because of excessive power requirement, deactivated by configuration or Power supply failed.
1. Check the attached powered device to see if it is defective.
2. Internal power supply issues, contact Enterasys Networks for technical support as Paul states above.
I would supply a show support and current.log file, show port inlinepower