Emerson GXT4 User's Guide download pdf (Page 47)

Troubleshooting

41 Liebert

GXT4

™

7.0 TROUBLESHOOTING

This section indicates various UPS symptoms a user may encounter and provides a troubleshooting

guide in the event the UPS develops a problem. Use the following information to determine whether

external factors caused the problem and how to remedy the situation.

7.1 UPS Symptoms

The following symptoms indicate the Liebert GXT4 is malfunctioning:

• The relative indicators illuminate, indicating the UPS has detected a problem.

• An alarm buzzer sounds, alerting the user that the UPS requires attention.

7.1.1 Indicator and LCD

In addition to the fault indicator being illuminated, the LCD will display the fault. The displayed

fault on the LCD is described in Table 10

Table 10 Description of the displayed fault

Displayed Fault Cause Corrective Steps

UPS self test failed The battery is bad or weak. Contact customer service.

UPS shutdown

command received

The UPS shuts down through

communication.

Contact customer service.

UPS overload The UPS is overloaded.

Reduce the load and contact customer

service.

Inverter Out of Order The inverter is faulty. Contact customer service.

Battery Weak/Bad The battery is bad or weak. Replace the battery.

Output Short Circuit The output connection is short-circuited.

Shut down the equipment and contact

customer service.

DC Bus Overvoltage The DC bus is faulty. Contact customer service.

UPS Overtemperature

Over-temperature occurs to the UPS and the

UPS will transfer to Bypass mode.

Reduce the load and contact customer

service.

Charger Out of Order The charger is faulty. Contact customer service.

Fan Out of Order At least one fan is faulty. Contact customer service.

DC Bus Discharge Fail A DC-DC failure occurs. Contact customer service.

NOTE

If the UPS encounters a fault and no correction attempt is performed within 2 minutes, the

LCD backlight will flash (on 1 second and off 1 second) as an alert.

Press any button to exit the alert mode. If no correction attempt is performed on the UPS, the

LCD backlight will flash again until the UPS fault is corrected.

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Emerson GXT4 User's Guide Page 47

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