Emerson Liebert GXT4-1000RT230, User Manual

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Chapter 7 Troubleshooting 33
Liebert GXT4 UPS 700VA ~ 3000VA (230V) User Manual
Chapter 7 Troubleshooting
This section indicates various UPS symptoms a user may encounter and troubleshooting steps 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 has malfunctions.
1. The fault indicator will be illuminated, and the LCD display panel will display the fault.
2. An alarm buzzer will sound, indicating that the UPS requires attention.
7.1.1 Indicator And LCD Display Panel
In addition to the fault indicator being illuminated, the LCD display panel will display the fault. The displayed fault on
the LCD display panel is described in Table 7-1.
Table 7-1 Description of the displayed fault
Displayed fault Cause Corrective Steps
UPS self test failed The battery is bad or weak Call customer service
UPS shutdown command received
The UPS shuts down through
communication
Call customer service
UPS overload The UPS is overloaded Reduce the load and call customer service
Inverter Out of Order The inverter is faulty Call 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 call customer
service
DC Bus Over-voltage The DC bus is faulty Call customer service
UPS Over-temperature
Over-temperature occurs to the UPS and
the UPS will transfer to Bypass mode
Reduce the load and call customer service
Charger Out of Order The charger is faulty Call customer service
Fan Out of Order At least one fan is faulty Call customer service
DC Bus Discharge Fail DCDC failure occurs Call customer service

Note
If the UPS encounters a fault, and you do not perform any operation on it within two minutes, the LCD backlight will flash (on 1s
and off 1s) to remind you of the fault. You can press any button to exit the flash mode. If you still do not perform corresponding
operation on the UPS, the LCD backlight will flash again until you handle the UPS fault.
7.1.2 Audible Alarm
An audible alarm will be used in conjunction with the visual indicator to indicate to the user a change in UPS
operating status. The audible alarm will enunciate as given in Table 7-2.
Table 7-2 Audible alarm description
No. Condition Alarm
1 Battery discharge Half-second beep every 10 seconds
2 Low battery Two half-second beeps every 5 seconds
3 UPS fault, load on bypass 1-second beep every 4 seconds
4 UPS fault, no power to load Continuous
5 Overload Half-second beep every half second
6 Battery Replacement 2-second beep every 2 minutes
7 Battery loss Continuous
8
Wiring problem (including line-to-neutral reversal or a
loss of proper grounding for UPS)
Continuous