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Liebert GXT5 1500VA Equipment information & support

The Vertiv Liebert GXT5 1500VA (GXT5-1500IRT2UXLE) is a 2U rack/tower convertible online double-conversion UPS delivering unity power factor (1500VA/1500W) with zero transfer time for critical IT applications.

Equipment information

Brand
Vertiv
Equipment model
Liebert GXT5 1500VA
Equipment type
UPS power
Controller / software version
Confirm against the installed equipment
View full product specifications
Liebert GXT5 1500VA 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
1500 VA
Active Power
1500 W
Output Power Factor PF
1.0
Topology
Online double-conversion, high-frequency pure sine wave
AC Input Voltage Range
115 ~ 288 VAC
Nominal DC Output Voltage
220/230/240 VAC

Alarms & troubleshooting

OVERLOAD_FAULT (Output Overload Fault)
Alarm LED solid red, Bypass LED solid amber, continuous audible alarm
Connected IT load exceeds the rated 1500VA/1500W capacity, triggering an automatic transfer to static bypass
1. Check the LCD display for real-time load percentage and receptacle branch usage. 2. Disconnect non-critical IT equipment immediately to reduce total load below 80% nominal rating. 3. Verify alarm clearance on the LCD panel, then manually restore the UPS to normal on-line inverter mode.
BATT_REPLACE (Battery Disconnected or Failure)
Warning LED blinking amber, Battery LED solid red, audible beep every 2 seconds
Internal battery pack connector is unplugged, or periodic battery self-test detected high internal impedance requiring replacement
1. Remove the front bezel and verify that the hot-swap battery quick-connector is fully engaged and seated. 2. If properly connected, execute a manual battery self-test via the LCD maintenance menu. 3. If the failure persists, replace the hot-swappable battery cartridge with a certified pack and reset the runtime counter.
OVER_TEMP (System Over-Temperature Fault)
Alarm LED solid red, cooling fans operating at maximum RPM, LCD shows temperature fault icon, continuous tone
Ambient rack temperature exceeds 40°C, front ventilation grilles clogged with dust, or exhaust fan failure causing IGBT heatsink overtemperature
1. Inspect rack and room ambient temperatures, ensuring intake air is between 0°C and 40°C. 2. Clear dust from front bezel air intake and rear exhaust slots, maintaining at least 100mm clearance. 3. Verify rear cooling fan operation; if a fan has locked rotor or failed, replace the fan assembly.
INV_FAULT (Inverter Hardware Failure)
Alarm LED solid red, Inverter LED off, Bypass LED solid amber (if mains normal), continuous tone
DC bus overvoltage/undervoltage, shorted IGBT power switch, or inverter voltage feedback loop malfunction
1. Confirm that bypass supply is operational and powering critical loads without voltage interruption. 2. Gracefully save critical load data, shut down equipment, and isolate AC input and DC battery for a cold reset. 3. Wait 3 minutes, then re-energize; if the inverter fault reoccurs, replace the internal power stage board or chassis.
CHARGER_FAIL (Battery Charger Failure)
Warning LED solid amber, LCD displays charger fault code, intermittent beep every 5 seconds
Battery float/boost charging circuit hardware failure or output DC charging voltage out of specified tolerance limits
1. Review battery bus voltage metrics on the LCD screen to rule out external cell leakage or short circuits. 2. Measure the physical terminal voltage using a digital multimeter to verify normal float range (approx. 54.6V DC nominal). 3. Cycle utility AC power and inspect charger configuration in settings; replace the internal power/charger board if output is absent.

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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