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4. Troubleshooting

If the UPS system does not operate correctly, please solve the problem by using the table below. 

Symptom 

Possible cause 

Remedy 

No indication and alarm even 
though the mains is normal.   

The  AC  input  power  is  not 
connected well. 

Check  if  input  power  cord 
firmly  connected  to  the 
mains.   

The  AC  input  is  connected 
to the UPS output. 

Plug AC input power cord to 
AC input correctly.   

The icon 

and 

  flashing on 

LCD display and alarm is sounding 
every second. 

The external or internal 
battery is incorrectly 
connected. 

Check  if  all  batteries  are 
connected well. 

Fault code is shown as 27 and the 
icon 

  is lighting on LCD 

display and alarm is continuously 
sounding. 

Battery  voltage  is  too  high 
or the charger is fault. 

Contact your dealer. 

Fault code is shown as 28 and the 
icon 

  is lighting on LCD 

display and alarm is continuously 
sounding. 

Battery voltage is too low or 
the charger is fault. 

Contact your dealer. 

The icon 

  and 

  is 

flashing on LCD display and alarm 
is sounding twice every second. 

UPS is overload 

Remove  excess  loads  from 
UPS output. 

UPS is overloaded. Devices 
connected to the UPS are 
fed directly by the electrical 
network via the Bypass. 

Remove  excess  loads  from 
UPS output. 

After repetitive overloads, 
the UPS is locked in the 
Bypass mode. Connected 
devices are fed directly by 
the mains. 

Remove  excess  loads  from 
UPS  output  first.  Then  shut 
down the UPS and restart it. 

Fault code is shown as 43 and The 
icon 

  is lighting on LCD 

display and alarm is continuously 
sounding. 

The UPS shut down 
automatically because of 
overload at the UPS output. 

Remove  excess  loads  from 
UPS output and restart it. 

Fault code is shown as 14 and the 
icon 

  is lighting on LCD 

display. Alarm is continuously 
sounding. 

The UPS shut down 
automatically because short 
circuit occurs on the UPS 
output. 

Check  output  wiring  and  if 
connected  devices  are  in 
short circuit status. 

Fault code is shown as 1, 2, 3, 4, 5, 
11, 12, 13, 41 and 45 on LCD 
display and alarm is continuously 
sounding. 

A UPS internal fault has 
occurred. There are two 
possible results: 
1. The load is still supplied,
but directly from AC power
via bypass.
2. The load is no longer
supplied by power.

Contact your dealer 

Summary of Contents for Liebert GXT MT+ CX 1K

Page 1: ......

Page 2: ...and setup 3 2 1 Rear panel view 3 2 2 Setup the UPS 4 3 Operations 5 3 1 Button operation 5 3 2 LCD Panel 5 3 3 Audible Alarm 7 3 4 LCD display wordings index 7 3 5 UPS Setting 7 3 6 Operating Mode D...

Page 3: ...ay that no one can step on or trip over them Do not connect domestic appliances such as hair dryers to UPS output sockets The UPS can be operated by any individuals with no previous experience Connect...

Page 4: ...rvise operations Unauthorized persons must be kept well away from the batteries Caution risk of electric shock The battery circuit is not isolated from the input voltage Hazardous voltages may occur b...

Page 5: ...iginal package in a safe place for future use 2 1 Rear panel view GXT MT CX 1K SB GXT MT CX 2K SB GXT MT CX 3K SB GXT MT CX 1K GXT MT CX 2K GXT MT CX 3K 1 AC input 2 Input circuit breaker 3 USB commun...

Page 6: ...ation port of your PC With the monitoring software installed you can schedule UPS shutdown start up and monitor UPS status through PC The UPS is equipped with intelligent slot perfect for either SNMP...

Page 7: ...ds to turn off the UPS UPS will be in standby mode under power normal or transfer to Bypass mode if the Bypass enable setting by pressing this button Confirm selection key Press this button to confirm...

Page 8: ...frequency battery voltage load information and internal temperature Vac input output voltage Vdc battery voltage Hz frequency load level C F temperature Load information Indicates the load level by 0...

Page 9: ...isplay content Meaning ENA Enable DIS Disable ESC Escape b L Low battery O L Overload N C Battery is not connected O C Overcharge C H Charger b F Battery fault b V Bypass voltage range W T Waiting F U...

Page 10: ...the following two options CF ENA converter mode enable CF DIS converter mode disable Default 03 Output frequency setting Interface Setting Parameter 2 Output frequency setting You may set the initial...

Page 11: ...om 0 999 in battery mode 0 When setting as 0 the backup time will be only 10 seconds 999 When setting as 999 the backup time setting will be disabled 07 Battery total AH setting Interface Setting Set...

Page 12: ...ll bypass voltage to output for energy saving Frequency Converter mode When input frequency is within 40 Hz to 70 Hz the UPS can be set at a constant output frequency 50 Hz or 60 Hz The UPS will still...

Page 13: ...age too low 28 Bus short 05 x Over temperature 41 x Inverter soft start fail 11 x Over load 43 Inverter voltage high 12 x Charger failure 45 x 3 8 Warning indicator Warning Indicator Alarm Word Icon f...

Page 14: ...wice every second UPS is overload Remove excess loads from UPS output UPS is overloaded Devices connected to the UPS are fed directly by the electrical network via the Bypass Remove excess loads from...

Page 15: ...epair the DC DC mosfet will damage 5 Storage and Maintenance Operation The UPS system contains no user serviceable parts If the battery service life 3 5 years at 25 C ambient temperature has been exce...

Page 16: ...ss when the utility is normal 130 UPS shuts down after 3 seconds at battery mode or transfer to bypass when the utility is normal Current Crest Ratio 3 1 Harmonic Distortion 3 THD Linear Load 6 THD No...

Page 17: ...battery mode or transfer to bypass when the utility is normal 130 UPS shuts down after 3 seconds at battery mode or transfer to bypass when the utility is normal Current Crest Ratio 3 1 Harmonic Disto...

Page 18: ...perature range of 0 C to 45 C for UPS optimal operation For every 5 C above 45 C the UPS will derate 12 of nominal capacity at full load The highest working temperature requirement for UPS operation i...

Page 19: ...of the UPS and 300mm in the back and two sides of the UPS for heat dissipation and easy maintenance 6 Connect To Transformer Please do NOT connect transformer to output of the UPS Otherwise it will ca...

Page 20: ...se UPS internal fault It s recommended to add one breaker between positive pole of battery pack and positive pole of external battery connector in UPS to prevent damage to battery packs from internal...

Page 21: ...19...

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