Emerson 000-VA User Manual

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.

The following symptoms indicate the Liebert GXT3 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.

In addition to the fault indicator being illuminated, one or more of LED segments of battery level 

indicator will also be illuminated to provide a diagnostic aid to the user, as shown in Figure 20. The 

descriptions are listed in Table 4.

A - E

On bypass from output overload (half-second beep every half second)

A

On bypass due to overtemperature condition (1-second beep every 4 seconds)

B

On bypass due to DC bus overvoltage (1-second beep every 4 seconds)

C

On bypass due to DC/DC power supply failure (1-second beep every 4 seconds)

D

PFC failure (1-second beep every 4 seconds).

E

On bypass due to inverter failure (1-second beep every 4 seconds)

A&C

UPS failed battery test (2-second beep every 60 seconds)

C&E

UPS shutdown by command from communication (USB port or Liebert IntelliSlot

®

 port) (no 

audible)

A&B

UPS Failure (includes dual-fan failure, single-fan failure under certain conditions and battery 

charger failure) and continuous alarm

Battery Indicator

Flashing

Internal Battery source not available (continuous horn); check battery connection, power down 

and reboot UPS.

Bypass Indicator

Flashing

Mains power voltage or frequency is out of tolerance; bypass is unavailable

A - E indicators are shown in Figure 20

A

B

C

D

E