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Liebert GXE 1kVA Equipment information & support

The Vertiv Liebert GXE 1kVA is a high-performance single-phase online double-conversion UPS rated at 1000VA/800W delivering pure sine wave AC with 0 ms transfer time and ultra-wide input tolerance.

Equipment information

Brand
Vertiv
Equipment model
Liebert GXE 1kVA
Equipment type
UPS power
Controller / software version
Confirm against the installed equipment
View full product specifications
Liebert GXE 1kVA Official Product View 1

Information below comes from the current product catalogue. Confirm the controller, software version and configuration of the installed equipment separately.

Apparent Power
1000 VA
Active Power
800 W
Output Power Factor PF
0.8
Topology
Online double-conversion, high-frequency pure sine wave
AC Input Voltage Range
115 ~ 300 VAC
Nominal DC Output Voltage
220 VAC ± 1%

Alarms & troubleshooting

INV_FAULT (Inverter Fault / Er05)
Fault LED solid red, Bypass LED solid amber, Inverter LED off, continuous buzzer tone
Inverter IGBT breakdown, drive circuit abnormality, or output voltage feedback failure forcing load transfer to bypass
1. Confirm the critical load is stably powered via bypass and record secondary fault codes on the LCD; 2. Disconnect AC input and shut down UPS; wait at least 5 minutes for bus capacitors to discharge; 3. Restart the unit for self-test; if Er05 persists, the inverter power assembly is defective and requires replacement.
BATT_OPEN (Battery Disconnected / Open Circuit / bAtt)
Battery LED flashing amber, Warning indicator active, buzzer beeps once every 2 seconds
Internal/external battery breaker tripped, rear DC connector unseated, DC fuse blown, or battery string depleted/open-circuit
1. Inspect rear panel and external battery cabinet (EBC) DC connectors to ensure they are locked tightly; 2. Measure battery terminal open-circuit DC voltage with a digital multimeter to ensure it matches string nominal rating (typically 24VDC or 36VDC for 1kVA); 3. Check continuity of internal DC fuses; if individual block voltages are below cutoff levels, replace the battery cartridge.
OVERLOAD (Output Overload / Er07)
Fault LED solid red, Overload indicator solid, continuous buzzer tone
Connected load exceeds UPS rated capacity (>105% prolonged, or >130% peak limit), forcing inverter thermal shutdown to protect hardware
1. Immediately disconnect non-critical IT/telecom equipment to reduce both apparent and real power demand; 2. Check the LCD load percentage bar to confirm total load drops below 80% of rated capacity; 3. Press 'OFF' to clear the alarm, then 'ON' to restore inverter output; if overload reoccurs, inspect downstream PDU/branch circuits for short circuits.
OVER_TEMP (Over-Temperature Fault / Er08)
Fault LED solid red, temperature icon illuminated, buzzer beeps once per second, unit transfers to bypass
Ambient rack temperature exceeds 40°C rating, internal cooling fan stalled/failed, or front/rear airflow grilles severely obstructed
1. Inspect rack ventilation paths to ensure minimum 100mm clearance in front and rear of the chassis; 2. Check rear exhaust fan operation for abnormal noise, obstruction, or complete fan failure; 3. Verify data room HVAC temperature and clean air grilles; allow internal heatsinks to cool before clearing the fault or restarting the inverter.
BUS_FAULT (DC Bus Voltage Fault / Er01)
Fault LED solid red, LCD toggles Er01 with high bus icon, continuous buzzer, output isolated or locked in bypass
Mains transient surge spike, PFC boost circuit driver breakdown, or bulk electrolytic capacitor failure pushing DC bus above safety threshold (>450VDC)
1. Disconnect upstream AC input breaker and isolate all connected telecom loads; 2. Leave unit de-energized for at least 10 minutes to allow DC bus capacitors to discharge to a safe voltage; 3. Inspect input SPD and verify mains voltage stability (160VAC-280VAC); re-apply utility power, and if Er01 immediately reappears, replace the internal PFC/mainboard assembly.

Access Complete Maintenance & Full Alarm Troubleshooting Manual

This page lists high-frequency critical alarm codes commonly encountered in field maintenance. Comprehensive manufacturer troubleshooting matrices, board-level repair guides, detailed electrical schematics, and firmware commissioning manuals are delivered alongside equipment upon formal project procurement, accompanied by dedicated FAE technical support.

Contact Account Manager for Full Manual

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