Liebert GXT 2U user manual Check load equipment for

			Troubleshooting
Table 1	Troubleshooting guide (continued)
Problem		Cause	Solution
			Check load level display
Fault and Bypass			and remove non-essential
indicator LEDs		UPS overloaded or load	loads. Recalculate the load
and all load level			and reduce number of
		equipment is faulty.
LEDs are			loads connected to UPS.
illuminated.			Check load equipment for
			faults.
			Ensure UPS is not
			overloaded, ventilation
			openings not blocked, or
Fault and Bypass		UPS internal fan has a	room ambient temperature
			is not excessive. Wait 30
indicator LEDs		problem or UPS shutdown
			minutes to allow UPS to
and diagnostic		due to temperature
			cool, then restart UPS. If
LED A are		condition. Load is on
			UPS does not restart,
illuminated.		bypass power.
			contact your local dealer,
			Liebert representative or
			the Liebert Worldwide
			Support Group.
Fault and Bypass			UPS requires service.
indicator LEDs		UPS internal DC bus	Contact your local dealer,
and diagnostic			Liebert representative or
		overvoltage.
LED B are			the Liebert Worldwide
illuminated.			Support Group.
Fault and Bypass			UPS requires service.
indicator LEDs		UPS control power supply	Contact your local dealer,
and diagnostic			Liebert representative or
		fault.
LED C are			the Liebert Worldwide
illuminated.			Support Group.
Fault and Bypass			UPS requires service.
indicator LEDs		UPS PFC (Power Factor	Contact your local dealer,
and diagnostic			Liebert representative or
		Correction Circuit) fault.
LED D are			the Liebert Worldwide
illuminated.			Support Group.
Fault and Bypass			UPS requires service.
indicator LEDs			Contact your local dealer,
and diagnostic		UPS inverter fault.	Liebert Representative or
LED E are			the Liebert Worldwide
illuminated.			Support Group.
Fault indicator			Replace batteries. Contact
LED and			your local dealer, Liebert
diagnostic LED A		UPS failed the battery test.	representative or the
and C are			Liebert Worldwide Support
illuminated.			Group.

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