Vertiv™ | Liebert
®
STS2
™
100-1000A, 50/60Hz User Manual | Rev. 12 | 11/2017 113
PRIMARY FAN FAIL
Primary Fan Failure.
One of the primary cooling fans for the Liebert STS2 has failed. The alternate fans are now running. The alternate fans are
not monitored.
Contact Vertiv Services for technical support at 800-543-2378.
Press SILENCE on the touchscreen to turn Off the audible alarm, if so configured. If you are accessing the Liebert STS2
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.
CONTROL MODULE FAIL
Control logic module has failed.
One of the control modules on the control board has failed.
Contact Vertiv Services at 800-543-2378.
Press SILENCE on the touchscreen to turn Off the audible alarm, if so configured. If you are accessing the Liebert STS2
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.
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 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 Vertiv Services at 800-543-2378.
Press SILENCE on the touchscreen to turn Off the audible alarm, if so configured. If you are accessing the Liebert STS2
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.
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 Vertiv Services at 800-543-2378.
Press SILENCE on the touchscreen to turn Off the audible alarm, if so configured. If you are accessing the Liebert STS2
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.
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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