Emerson GXT2U user manual Troubleshooting Guide, Problem Cause Solution

Page 30

Troubleshooting Guide

Problem

Cause

Solution

 

 

 

UPS fails to start

 

Ensure UPS is OFF. Disconnect

UPS is short circuited or over-

all loads and ensure nothing is

when the ON button

lodged in output receptacles.

loaded.

is pressed.

Ensure loads are not defective

 

 

 

or shorted internally.

 

 

 

 

 

UPS is operating from battery

 

UPS not plugged in.

mode, make certain UPS is

 

securely plugged into the wall

 

 

 

 

receptacle.

 

 

 

 

UPS input protection fuse has

UPS is operating from battery

Battery indicator

mode. Save data and close

blown/opened.

applications. Replace UPS

LED is illuminated.

 

input fuse, then restart UPS.

 

 

 

 

 

 

 

UPS is operating from battery

 

Utility voltage out of UPS input

mode. Save data and close

 

applications. Ensure utility sup-

 

range.

 

ply voltage is within acceptable

 

 

 

 

limits for UPS.

 

 

 

 

Batteries are not fully charged.

Keep UPS plugged in continu-

 

ously at least 24 hours to

 

 

recharge batteries.

UPS has reduced

UPS is overloaded.

Check load level display and

reduce the load on the UPS.

 

battery time.

 

 

 

Replace batteries. Contact your

 

 

 

Batteries may not be able to

local dealer, Liebert representa-

 

tive or the Liebert Worldwide

 

hold a full charge due to age.

 

Support Group for replacement

 

 

 

 

battery kit.

 

 

 

Fault and Bypass

 

Check load level display and

UPS overloaded or load equip-

remove non-essential loads.

indicator LEDs and

Recalculate the load and

all load level LEDs

ment is faulty.

reduce number of loads con-

are illuminated.

 

nected to UPS. Check load

 

 

equipment for faults.

 

 

Ensure UPS is not overloaded,

 

 

ventilation openings not

Fault and Bypass

UPS internal fan has a problem

blocked, or room ambient tem-

perature is not excessive. Wait

indicator LEDs and

or UPS shutdown due to tem-

30 minutes to allow UPS to

diagnostic LED A are

perature condition. Load is on

cool, then restart UPS. If UPS

illuminated.

bypass power.

does not restart, contact your

 

 

local dealer, Liebert representa-

 

 

tive or the Liebert Worldwide

 

 

Support Group.

Fault and Bypass

UPS internal DC bus overvolt-

UPS requires service. Contact

indicator LEDs and

your local dealer, Liebert repre-

diagnostic LED B are

age.

sentative or the Liebert World-

illuminated.

 

wide Support Group.

Fault and Bypass

 

UPS requires service. Contact

indicator LEDs and

UPS control power supply fault.

your local dealer, Liebert repre-

diagnostic LED C

sentative or the Liebert World-

 

are illuminated.

 

wide Support Group.

 

 

 

26

DISCONTINUED

PRODUCT

 

Image 30
Contents Liebert GXT2U DIS Product Table of Contents Operating Instructions Important Safety Instructions DIS Glossary of Symbols Introduction Major Components Rectifier/Power Factor Correction PFC CircuitBattery Charger Transient Voltage Surge Suppression and EMI/RFI FiltersBattery DC-to-DC ConverterDynamic Bypass Liebert GXT2U-Rear View Preparation InstallationTower UPS Installation Base to accommodateRack-Mount UPS Conversion and Installation Optional rack mount handlesMounting rails M5 screwsApply grease UPS or battery cabinet Apply grease inside External Battery Cabinet Installation DIS Controls and Indicators ON/Alarm Silence/Manual Battery Test ButtonBypass Indicator LED Amber Load/Battery Level Indicators 4 Green, 1 AmberFault Indicator LED Red UPS on Indicator LED GreenOutput Voltage Selection Normal Mode Operation Bypass Mode OperationOperating Instructions Battery Mode Operation Battery Recharge ModeCommunications Interface Port Pins 4 & 5 Remote Shutdown on BatteryCommunications Pin Assignment DescriptionPins 5 & 6 Any-Mode Shutdown Auto-Enable Output Pin 6 LogicUPS Intelligent Communications Configuration Program Liebert GXT2U Configuration Program AbilitiesMaintenance Battery ReplacementInternal Battery Replacement Procedures On bypass due to DC bus overvoltage beep every 4 sec TroubleshootingOn bypass due to overtemperature condition beep every 4 sec On bypass due to PFC failure beep every 4 secTroubleshooting Guide Problem Cause SolutionBattery test is performed Alarm Conditions Condition AlarmSpecifications Battery Cabinet Specifications Dimensions in mmWEIGHT, lb kg Load % Battery Run TimesInternal Battery MinutesProduct Warranty Registration DIS DIS DIS Product Technical Support / Service Emerson Network PowerLocations
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