Troubleshooting Power Distribution Units; Troubleshooting Tripped Breakers On A Pdu - Western Digital ActiveScale X100 Support Manual

ActiveScale™ X100 Support Guide
administrator will still be able to identify the enclosure and component in
question.
20. Install the remaining enclosure components in the reverse order that you removed them.
21. Reconnect the enclosure power cords and network cables
22. Verify that the fault LED is no longer on.
23. If the fault LED is still on, the drive may need to be replaced.
24. If the fault LED is not on, restart the Storage Node and verify that the Storage Enclosure Basic is
functioning properly.

11.2 Troubleshooting power distribution units

This section provides instruction on how to troubleshoot the power distributions units (PDU). Because the
ActiveScale X100 contains four single-phase PDUs and two 3-phase PDUs, one PDU may be taken offline
at any give point for troubleshooting.

11.2.1 Troubleshooting tripped breakers on a PDU

To troubleshoot tripped breakers on a PDU, do the following:
1. From the rear of the rack, identify the PDU that displays and error of bE on the readout located near
the middle of the mounted PDU.
2. On the PDU, inspect the breakers located above each of the phases.
3. If one of the phases has a switch that has rotated out and displaying a red portion, this is the breaker
that has been tripped.
Note: All functioning breaker switches will be flush with the breaker.
4. Press the tripped breaker switch until it is no longer sticking out.
5. Verify that the PDU LED no longer displays an error on the PDU readout.
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