Liebert GXT2-6000RT230 User Manual

Problem

Cause

Solution

UPS fails to start when the 

ON button is pressed.

UPS is short-circuited or 

overloaded.

Ensure UPS is OFF. Disconnect all loads and ensure nothing is 

lodged in output receptacles. 

Ensure loads are not defective or shorted internally.

Battery indicator LED is 

illuminated.

UPS not plugged in.

UPS is operating from battery mode, make certain UPS is 

securely plugged into the wall receptacle.

UPS input protection fuse 

has blown/opened.

UPS is operating from battery mode. Save data and close 

applications. Replace UPS input fuse, then restart UPS.

Mains voltage out of UPS 

input range.

UPS is operating from battery mode. Save data and close 

applications. Ensure mains supply voltage is within acceptable 

limits for UPS.

UPS has reduced battery 

time.

Batteries are not fully 

charged.

Keep UPS plugged in continuously at least 24 hours to 

recharge batteries.

UPS is overloaded.

Check load level display and reduce the load on the UPS.

Batteries may not be able to 

hold a full charge due to age.

Replace batteries. Contact your local dealer, Liebert 

representative or the Liebert Worldwide Support Group for 

replacement battery kit.

Fault and Bypass indicator 

LEDs and all load level LEDs 

are illuminated.

UPS overloaded or load 

equipment is faulty.

Check load level display and remove non-essential loads. 

Recalculate the load and reduce number of loads connected to 

UPS. Check load equipment for faults.

Fault and Bypass indicator 

LEDs and diagnostic LED A 

are illuminated.

UPS internal fan has a 

problem or UPS shutdown 

due to temperature condition. 

Load is on bypass power.

Ensure UPS is not overloaded, ventilation openings not 

blocked, or room ambient temperature is not excessive. Wait 

30 minutes to allow UPS to cool, then restart UPS. If UPS does 

not restart, contact your local dealer, Liebert representative or 

the Liebert Worldwide Support Group.

Fault and Bypass indicator 

LEDs and diagnostic LED B 

are illuminated.

UPS internal DC bus 

overvoltage.

UPS requires service. Contact your local dealer, Liebert 

representative or the Liebert Worldwide Support Group. 

Fault indicator LED and 

diagnostic LED C are 

illuminated.

DC-DC failure during battery 

mode.

Bus voltage under 315VDC(O/P 220VAC) / 330VDC(O/P 

230VAC) / 345VDC(O/P 240VAC). UPS requires service. 

Contact your local dealer, Liebert representative or the Liebert 

Worldwide Support Group.

Fault and Bypass indicator 

LEDs and diagnostic LED D 

are illuminated.

UPS PFC (Power Factor 

Correction Circuit) fault.

UPS requires service. Contact your local dealer, Liebert 

representative or the Liebert Worldwide Support Group.

Fault and Bypass indicator 

LEDs and diagnostic LED E 

are illuminated.

UPS inverter fault.

UPS requires service. Contact your local dealer, Liebert 

Representative or the Liebert Worldwide Support Group.

Fault indicator LED and 

diagnostic LEDs A and C are 

illuminated.

UPS failed the battery test.

Replace batteries. Contact your local dealer, Liebert 

representative or the Liebert Worldwide Support Group.

Fault and Bypass indicator 

LEDs and diagnostic LED C 

and E are illuminated.

UPS shutdown due to a 

command from the 

communications port(s).

Your UPS has received a signal or command from the attached 

computer. If this was inadvertent, ensure the communication 

cable used is correct for your system. For assistance, contact 

your local dealer, Liebert representative or the Liebert 

Worldwide Support Group.

Fault and LEDs A&E are 

Illuminated 

Fan locked

Check for external obstruction entering fan guard. UPS 

requires service. Contact your local dealer, Liebert 

representative or Liebert Worldwide Support Group.

Fault and LEDs B&C are 

Illuminated

REPO active

circuit is closed. If not used, a wire jumper must connect the 

REPO terminals.

Fault and LEDs B&D are 

Illuminated 

UPS is OFF due to previous 

REPO shutdown, but the 

REPO has been connected 

or reset. Autorestart 

disabled.

Start the UPS using the front panel.