Vertiv™ | Liebert® STS2/PDU
™
User Manual | Rev. 6 | 10/2017 123
PWR SPLY DC A FAIL
Power Supply DC Bus A Failed
The primary power supply is no longer providing DC power to the control board and the touchscreen.
Contact technical support; in the United States, call 800-543-2378. Outside the 48 contiguous United States
contact Vertiv Services, if available in your area. For international areas not covered by Vertiv Services, the
Vertiv-authorized distributor can provide technical support.
Press SILENCE on the touchscreen to turn off the audible alarm, if so configured. If you are accessing the
Liebert STS2/PDU system from a terminal, type SH and press RETURN on your keyboard to turn off the
audible alarm.
This event was written to the Event Log, if so configured.
The alarm has triggered a message to be sent to the modem, if so configured.
If configured to be a latching alarm, press RESET on the display. If you are accessing the unit from a terminal,
type CA and press RETURN on your keyboard.
PWR SPLY DC B FAIL
Power Supply DC Bus B Failed
The secondary power supply is no longer providing DC power to the control board and CAN options.
Contact technical support; in the United States, call 800-543-2378. Outside the 48 contiguous United States
contact Vertiv Services, if available in your area. For international areas not covered by Vertiv Services, the
Vertiv-authorized distributor can provide technical support.
Press SILENCE on the touchscreen to turn off the audible alarm, if so configured. If you are accessing the
Liebert STS2/PDU system from a terminal, type SH and press RETURN on your keyboard to turn off the
audible alarm.
This event was written to the Event Log, if so configured.
The alarm has triggered a message to be sent to the modem, if so configured.
If configured to be a latching alarm, press RESET on the display. If you are accessing the unit from a terminal,
type CA and press RETURN on your keyboard.
PWR SPLY S1 AC FAIL
Power Supply Source 1 AC Failed
The AC input power to the power supplies from Source 1 has failed. The power supplies are now operating on
AC power from Source 2. The AC input from Source 1 is still good.
Contact technical support; in the United States, call 800-543-2378. Outside the 48 contiguous United States
contact Vertiv Services, if available in your area. For international areas not covered by Vertiv Services, the
Vertiv-authorized distributor can provide technical support.
Press SILENCE on the touchscreen to turn off the audible alarm, if so configured. If you are accessing the
Liebert STS2/PDU system from a terminal, type SH and press RETURN on your keyboard to turn off the
audible alarm.
This event was written to the Event Log, if so configured.
The alarm has triggered a message to be sent to the modem, if so configured.
If configured to be a latching alarm, press RESET on the display. If you are accessing the unit from a terminal,
type CA and press RETURN on your keyboard.
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