Liebert GXT2 User Manual download pdf (Page 29)

Chapter 5 Handling Abnormal Problem 29

E1-20010329-C-1.0

Chapter 5 Troubleshooting

In the event of UPS fault, please check and remove the fault immediately following the

methods described in the table below. If the fault persist , please contact Liebert or its

authoriged agents.

Sequence

No.

Phenomena

Description

Cause Action

1 No panel display and

system self-test when

the Utility switch is in

the ON position.

A. Utility hasn't been

introduced into the

system;

B. Input undervoltage.

Use voltmeter to check

whether the input Utility

voltage is within

tolerances.

2 The Utility is normal,

but the Utility indicator

does not turn to and

the UPS operates in

Battery mode.

A. The input switch is

turned off;

B. The input power line

is not properly

connected;

A. Turn on the input

switch;

B. Make sure that the

input power line is

properly connected;

3 No alarm is given, but

there is no voltage

output.

The output power line is

not properly connected.

Make sure that the output

power line is properly

connected.

4 No panel display and

system self-test when

the Utility switch is in

the ON position.

A. Utility hasn't been

introduced into the

system;

B. Input undervoltage.

Use voltmeter to check

whether the input Utility

voltage is within

tolerances.

5 The Utility indicator

flashes.

The Utility voltage is

outside tolerances.

If the UPS is operating in

Battery mode, please

note the battery backup

time.

6 The buzzer beeps

every 0.5 second, and

the LCD displays

"OVERLOAD"

Overload. Disconnect some loads

from the UPS.

7 The fault indicator is on

and the LCD displays

"BATTERY FAIL".

A. The external battery

switch is turned off, or

its lead is not properly

connected;

B. Battery reverse

connection;

C. Battery damaged;

A. Check whether the

external battery switch is

turned on and its lead is

properly connected;

B. Check whether the

battery is reversely

connected;

C. Contact the distributor

for battery replacement;

8 The fault indicator is

on , and the LCD

displays "CHARGER

FAIL".

Charger fault Contact the Liebert or its

authoriged agent for

charger

replacement/maintenanc

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Liebert GXT2 User Manual Page 29

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