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		UPS overloaded or load	and reduce number of
and all load level		equipment is faulty.	and reduce number of
LEDs are		equipment is faulty.	loads connected to UPS.
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
Fault and Bypass		UPS internal fan has a	is not excessive. Wait 30
indicator LEDs		problem or UPS shutdown	is not excessive. Wait 30
indicator LEDs		problem or UPS shutdown	minutes to allow UPS to
and diagnostic		due to temperature	minutes to allow UPS to
and diagnostic		due to temperature	cool, then restart UPS. If
LED A are		condition. Load is on	cool, then restart UPS. If
LED A are		condition. Load is on	UPS does not restart,
illuminated.		bypass power.	UPS does not restart,
illuminated.		bypass power.	contact your local dealer,
			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		UPS internal DC bus	Liebert representative or
and diagnostic		overvoltage.	Liebert representative or
LED B are		overvoltage.	the Liebert Worldwide
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		UPS control power supply	Liebert representative or
and diagnostic		fault.	Liebert representative or
LED C are		fault.	the Liebert Worldwide
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		UPS PFC (Power Factor	Liebert representative or
and diagnostic		Correction Circuit) fault.	Liebert representative or
LED D are		Correction Circuit) fault.	the Liebert Worldwide
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.

29	DISCONTINUED
	PRODUCT

Troubleshooting guide (continued)

Problem

PRODUCT