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Event Message Help Text
129
HEAT SINK OVERTEMP
Heat Sink Over Temperature
The system heat sink temperature has exceeded the design limits.
Take immediate steps to cool the unit. Remove obstructions from the air inlet in the front of the unit. Remove
and replace the air filter behind the front door. A standard furnace filter can be used.
Press SILENCE on the touch screen to turn off the audible alarm, if so configured. If you are accessing the
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.
EQUIPMENT OVERTEMP
Equipment Over Temperature
Cabinet has exceeded the recommended temperature.
Contact technical support; in the United States, call 1-800-LIEBERT (1-800-543-2378). Outside the 48 contigu-
ous United States contact Liebert Global Services, if available in your area. For international areas not covered
by Liebert Global Services, the Liebert authorized distributor can provide technical support.
Press SILENCE on the touch screen to turn off the audible alarm, if so configured. If you are accessing the
STS2/PDU system from a terminal, type SH and press RETURN on your keyboard to turn off the audible
alarm.
This event and the system status surrounding it have been written to a History Log if the History Logs were not
already full. This event was also written to the Event Log, if so configured.
S1 UV
Source 1 Under Voltage (fast detection).
The input voltage from Source 1 dropped below a set percentage of the nominal voltage, as set in the Fast UV
setpoint under the User Settings. An S1 Fail alarm was also issued and source transfer has been inhibited.
The load of the STS2/PDU has been transferred to Source 2.
Press SILENCE on the touch screen to turn off the audible alarm, if so configured. If you are accessing the
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.
S1 UV (RMS)
Source 1 Under Voltage (slow detection).
The input voltage from Source 1 remained below a set percentage of the nominal voltage for a designated
period, as set in the Slow UV Setting and Slow UV Detection Delay setpoints configured under the User Set-
tings. An S1 Fail alarm was also issued and source transfer has been inhibited.
The load of the STS2/PDU has been transferred to Source 2.
Press SILENCE on the touch screen to turn off the audible alarm, if so configured. If you are accessing the
STS2/PDU system from a terminal, type SH and press RETURN on your keyboard to turn off the audible
alarm.
The alarm is latched and must be reset after the voltage returns to the nominal voltage. If the Reset option is
not configured for AUTO (automatic reset), then the reset action must be done manually. When the voltage is
within acceptable parameters, touch the RESET button on the touch screen. If you are accessing the unit from
a terminal, type CA and press RETURN on your keyboard.
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.