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Power supply LEDs

The illustration in this section shows the LEDs on the power supply.

300 watts Power supply LEDs​

Figure 1. 300 watts Power supply LEDs
300 watts Power supply LEDs

Each hot-swap power supply has three status LEDs.

Table 1. 300 watts Power supply LEDs
LEDDescription
1 Power input LED (green)

  • Off: The power supply is disconnected from the ac power source or a power problem occurs.

  • Green: The power supply is connected to the ac power source.

2 Power output LED (green)

  • Off: The server is powered off, or the power supply is not working properly. If the server is powered on but the power output LED is off, replace the power supply.

  • Green: The server is on and the power supply is working normally.

3 Power supply error LED (yellow)

  • Off: The power supply is working normally.

  • Yellow: The power supply has failed. To resolve the issue, replace the power supply.

450 watts Power supply LED​

Figure 2. 450 watts Power supply LED
450 watts Power supply LED

Each hot-swap power supply has one status LED.

Table 2. 450 watts Power supply LED
LEDDescription
1 Power output LED (green)

  • Green: The server is on and the power supply is working normally.

  • Blinking green: The power supply is in zero-output mode (standby). When the server power load is low, one of the installed power supplies enters into the standby state while the other one delivers entire load. When the power load increases, the standby power supply will switch to active state to provide sufficient power to the server.

    To disable zero-output mode, start the Setup utility, go to System Settings > Power > Zero Output and select Disable. If you disable zero-output mode, both power supplies will be in the active state.

  • Off: The power supply has failed or not connected from the ac power source or a power problem occurs. To resolve the issue, check the power cord and the input voltage. If the problem still recurs, replace the power supply.