Emerson GXT2U user manual Battery test is performed

Troubleshooting Guide (Continued)

Problem	Cause	Solution
Fault and Bypass	UPS PFC (Power Factor Cor-	UPS requires service. Contact
indicator LEDs and		your local dealer, Liebert repre-
diagnostic LED D	rection Circuit) fault.	sentative or the Liebert World-
are illuminated.		wide Support Group.
Fault and Bypass		UPS requires service. Contact
indicator LEDs and	UPS inverter fault.	your local dealer, Liebert Rep-
diagnostic LED E are		resentative or the Liebert
illuminated.		Worldwide Support Group.
Fault indicator LED		Replace batteries. Contact your
and diagnostic	UPS failed the battery test.	local dealer, Liebert representa-
LED A and C are illu-		tive or the Liebert Worldwide
minated.		Support Group.
		Your UPS has received a signal
Fault and Bypass		or command from the attached
	UPS shutdown due to a com-	computer. If this was inadvert-
indicator LEDs and		ent, ensure the communication
diagnostic LED C	mand from the communica-	cable used is correct for your
and E are illumi-	tions port(s).	system. For assistance, con-
nated.		tact your local dealer, Liebert
		representative or the Liebert
		Worldwide Support Group.
	UPS detected a line-to-neutral
	reversal or a loss of proper
	grounding; continuous horn and
AC LED is	UPS will not start.This is active	Contact a qualified electrician to
	only when power is first applied
flashing.		verify site wiring.
	to the input. Once the UPS is
	running, the AC LED will not
	start flashing, even if the input
	wiring is changed.
		Check battery connections,
		completely power down and
Battery LED is	Battery source is not available;	restart UPS.
		NOTE: If the battery circuit
flashing.	continuous horn.
		opens while the UPS is running,
		it will be detected when the next
		battery test is performed.
		The AC input powers the PFC
		input and serves as the bypass
	Bypass voltage is present, but	source. If the AC is present but
		the voltage or frequency
Bypass LED is	is disabled for use because the
		exceeds the acceptable range
flashing.	voltage or frequency is outside
		for safe operation with a load,
	acceptable limits.
		the bypass will be disabled and
		this LED will flash, indicating
		that the bypass is unavailable.

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