If the Fault LED is flashing red, turn the power switch to standby (labeled as 0), check the HVAC/HVDC power connections
on the power supply and the DC power source, and then turn the power switch back on (labeled as 1). The Input and
Output LEDs for the connected power supplies should be green and the Fault LED should be off.
Cisco Nexus 7710 Switch Site Preparation and Hardware Installation Guide
OL-30452-01.138
Installing or Replacing Modules, Fan Trays, and Power Supplies
Connecting a 3.5-kW HVAC/HVDC Power Supply to DC Power Sources