Emerson 250-400kVA manual Under normal conditions, no user action is required

			UPS Alarm and Status Messages
Table 7	Liebert NXL alarm and status messages (continued)
Event Message		Event Definition	Recommended Action
			Press “SILENCE” to silence the audible alarm.
Multiple Fan Fail		This summary event is active when more than	Press “RESET” to clear the alarm.
		one fan has failed.	If the alarm will not clear, contact your factory-
			authorized service provider.
		The UPS input source is generator.
		An external signal is being used to inform the
		UPS when the power source is generator rather	Under normal conditions, no user action is required.
On Gen Active		than utility, and the signal is active.	If the UPS is not actually on generator and this
		This status message is self-clearing. When the	message is active, contact your factory-authorized
		condition is no longer present, the message and	service provider.
		any control activity tied to the status event reverts
		to normal.
		The difference between the inlet air temperature	Press “SILENCE” to silence the audible alarm.
		and the outlet air temperature is too great.
			Check the Inlet Air Temperature on the One-Line
		This alarm means excessive heat is being
			Display and verify the reading is accurate, i.e. is the
		generated internally resulting in a higher than
			room temperature warmer than normal?
		normal exhaust air temperature.
Outlet Ovtemp			If the room temperature is warmer than normal,
		If the Bypass is within limits, the UPS reacts to
Limit			investigate and resolve the issue.
		this alarm by transferring to Bypass and shutting
			If the room temperature is normal, and the Inlet Air
		off the Inverter.
			Temp reading on the One-Line Display is higher
		This alarm is self-clearing. When the condition is
			than normal, contact your factory-authorized service
		no longer present, the alarm and any control
			provider.
		activity tied to the alarm reverts to normal.
			Press “SILENCE” to silence the audible alarm.
			Check the Active Event Window and investigate
			other events to further analyze.
			Press “RESET” to attempt to reset any latched
			events.
			Check the One-Line Display to determine the
			system status (on UPS, Bypass, or Off).
		This summary event occurs when the detected	Check the input and bypass (dual input only) and
		system output exceeds acceptable limits in either	observe the One-Line color. Green indicates good
		voltage or frequency.	power present, orange means power is present but
		If the UPS was on Inverter at the time of the	outside nominal range, and gray means power is
Output Fault		event, the UPS transfers to bypass provided the	not present.
		bypass voltage is available.	If the load is off and the input voltage is ok, attempt
		If the UPS was on bypass at the time of the event,	to restart the UPS by pressing “Startup,” “Manual
		the UPS shuts down rather than allowing	Start,” and follow the prompts.
		unacceptable voltage to reach the load.	If the Input Meter indicates input or bypass is not
			available, investigate and resolve the power
			problem.
			If the load is on bypass and all alarms are reset,
			press “Transfer,” “UPS,” to attempt to transfer back
			to Inverter.
			If the issue cannot be resolved, contact your
			factory-authorized service provider.

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