Power supply problems

Last Updated : Feb 24, 2025 |

Problems

Refer to the following points to prevent basic power supply problems:

Avoid loose connections. For example, loose power cables.
Check the power supply handle LED and ensure it indicates that the power supply is working properly.
Use only power supply units supplied by Avaya.
After installing a power supply unit, allow some time for the system to recognize the power supply unit and determine if it is working properly.

AC power supply units (PSUs) have an illuminated translucent handle that serves as an indicator.


Power Indicator Pattern	Condition
Green	A valid power source is connected to the PSU and the PSU is operational.
Blinking amber	Indicates a problem with the PSU.
Not illuminated	Power is not connected.
Blinking green	When the firmware of the PSU is being updated, the PSU handle blinks green. Caution: Do not disconnect the power cord or unplug the PSU when updating firmware. If firmware update is interrupted, the PSUs do not function.
Blinking green and turns off	When hot-plugging a PSU, the PSU handle blinks green five times at a rate of 4 Hz and turns off. This indicates a PSU mismatch with respect to efficiency, feature set, health status, or supported voltage. Caution: If two PSUs are installed, both the PSUs must have the same type of label. For example, Extended Power Performance (EPP) label. Mixing PSUs from previous generations of PowerEdge servers is not supported, even if the PSUs have the same power rating. This results in a PSU mismatch condition or failure to turn the system on. When correcting a PSU mismatch, replace only the PSU with the blinking indicator. Swapping the PSU to make a matched pair can result in an error condition and unexpected system shutdown. To change from a high output configuration to a low output configuration or vice versa, you must turn off the system Combining AC and DC PSUs is not supported and triggers a mismatch.

Important:

The DC power supply is not supported by Avaya.

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