Vertiv™ | Liebert
®
STS2
™
100-1000A, 50/60Hz User Manual | Rev. 12 | 11/2017 125
CB3A (OUTPUT) OPEN
Circuit Breaker 3A (Output breaker) is Open (Optional).
Circuit breaker 3A is not closed. This circuit breaker is assigned to the output load. The power flow to the load cannot flow
through the static transfer switch.
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.
S1 PHASE ROT ERROR
Source 1 Phase Rotation Error.
A phase rotation error condition exists on Source 1. Check the phase sequence (ABC) of Source 1.
Transferring to Source 1 has been inhibited.
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.
S2 PHASE ROT ERROR
Source 2 Phase Rotation Error.
A phase rotation error condition exists on Source 2. Check the phase sequence (ABC) of Source 2.
Transferring to Source 1 has been inhibited.
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.
TRANSFER INHIBITED
Transfer Inhibited.
Uninterrupted transfer between sources is inhibited due to input source failure, sources out of sync, switch failure, or the
unit is in bypass mode.
Check the Event Log for the event or events that may have caused the alarm.
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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