Vertiv™ | Liebert® STS2/PDU
™
User Manual | Rev. 6 | 10/2017 125
S1 VOLT SENSE FAIL
Source 1 Voltage Sense Module Failed
The module contained on the snubber monitoring the input voltage from Source 1 has failed.
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.
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.
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.
S2 VOLT SENSE FAIL
Source 2 Voltage Sense Module Failed
The module contained on the snubber monitoring the input voltage from Source 2 has failed.
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.
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.
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 Liebert STS2/PDU
system from a terminal, type CA and press RETURN on your keyboard.
S1 SCR SENSE FAIL
Source 1 SCR Sense Module Failed
The module contained on the snubber monitoring the SCRs for Source 1 has failed.
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.
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.
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 Liebert STS2/PDU
system from a terminal, type CA and press RETURN on your keyboard.
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