The Power Supply Status LEDs are on the power supply modules, as displayed in Figure 10: AC

Power Supply Status LED.

Figure 10: AC Power Supply Status LED

1 PSU module status LED

Table 9: AC Power Supply Status LED States provides status conditions that correspond to power

supply status LED states.

Table 9: AC Power Supply Status LED States

Power Supply State

PWR-1021-AC-RED

Input power present Normal

operation

Green

Input power present Power

Supply fault

ON/OFF: ON when PSU output is ON, OFF when PSU Output is

OFF

Input power present Power

Supply FAN fault

FLASH 800 ms ON / 800 ms OFF

No Input power Supply

installed in chassis

OFF

Input power present Supply not

installed in chassis

Green

Note: You can narrow down the error condition by logging in to the switch to view the specific

device state. Refer to the Arista User Manual’s Switch Environment Control chapter, under

the topic Viewing Environment Status, for further information on the

show environment

commands.

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