Liebert GXTMT Series Installation and User Manual
1-3 kVA UPS
Page
２０
V2.11
Emerson Network Power
Trouble Shooting
10. Trouble Shooting
If the UPS system does not operate correctly, please attempt to solve the problem using the table below.
Problem Possible
cause
Remedy
No indication, no warning
tone even though system is
connected to mains power
supply
No input voltage
Check building wiring socket outlet
and input cable.
LINE LED blinks
Phase and neutral
conductor at input of UPS
system are reversed
Rotate mains power socket by 180°
or connect UPS system.
LINE-LED blinks and
BATTERY-LED lights up
Input power and/or
frequency are out of
tolerance
Check input power source and inform
dealer if necessary
LINE and BYPASS LED light
up even though the power
supply is available
Inverter not switched on
Press On-Switch “I”
INVERTER LED lights up,
and audible alarm sounding
every 1 beep in every 4
seconds
Mains power supply has
failed
Switching to battery mode
automatically. When audible alarm
sounding every second, battery is
almost empty.
FAULT LED lights, warning
tone once a second
Overload
Remove loads of UPS output.
FAULT-LED lights up,
permanent warning tone
UPS fault
Notify dealer
Emergency supply period
shorter than nominal value
Batteries not fully charged
/ batteries defect
Charge the batteries for at least
1 - 2 hours and then check capacity.
If the problem still persists, consult
your dealer.
FAULT LED lights,
BATTERY-LED blinks,
warning tone once a second
Charger or Batteries
damaged
Notify dealer
Please have the following information at hand before calling the After-Sales Service Department:
1. Model number, serial number
2. Date on which the problem occurred
3. Detailed description of the problem
