Emerson liebert gxt5000r-208 User Manual

This section presents various problems a user might encounter. Use this information to deter-

mine whether external factors cause the problem and how to remedy the situation.
1. The Fault LED will illuminate, indicating the UPS detected a problem.
2. An alarm will sound, alerting that the UPS requires attention.
3. One or more additional load/battery level LED indicators will be illuminated to provide a 

diagnostic aid to the operator, as shown below:

4. Record the LED condition and horn condition. Turn off the 30A AC input circuit breaker 

on the rear of the UPS and restart the UPS based on the Operating Instructions in this 

manual.

If a problem persists, consult your local dealer, Liebert representative or the Liebert World-

wide Support Group—telephone numbers may be found on the back of this manual. Please 

have the UPS model number and serial number available at the time of your inquiry.

AC input overvoltage

Continuous beep

On bypass due to overtemperature condition until the UPS 

cools, then re-transferring load to inverter.

Continuous beep

Or off due to very high temperatures.

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Battery overvoltage

Continuous beep

Battery mode overload 

Half-second beep 

every 1 second

Inverter output short 

Continuous beep

Input AC present, but exceeds PFC input requirements 

(> 276 or < 170)

—

Battery failure warning

Continuous beep

EPO shutdown

Continuous beep

Record condition of LEDs and horn. Contact Liebert technical 

support.

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