17
The UPS cannot power on
after pressing the “ON” but-
ton
Problem
Possible cause
Solution
Battery LED flashes
The utility power is normal,
but the UPS can not turn in
line mode
Battery discharging time
diminishes
Battery low or battery not
connected
UPS fault
The UPS is not con-
nected to the battery or
the battery pack volt-
age is too low
.
The “O N” button is
pressed too briefly
Battery aged
UPS overloaded
Battery not yet been
fully charged
Check the battery. If the battery is
damaged,replace the battery immedi-
ately and ensurethat the battery breaker
is in “ON” position.
AC input br eaker in
“OFF” position
Please contact the distributor or ser-
vice center.
Check the battery or recharge the
battery.
Press the “ON” button for more than 1
second.
Replace the batteries. Please contact
the distributor to obtain the parts and
replacement service.
Check the loads and remove the non-
critical equipment.
Keep UPS connected to utility power
persistently for more than 10 hours to
recharge the batteries again.
Set the input breaker in “ON” position.
When you contact the service center, please provide the following information:
Model No. and the serial No. of the UPS;
The date when the problem arose;
Complete description of the problem, including the LED display, alarm
6.Troubleshooting
time model, you may also provide the battery information
.
warning, and power condition and load capacity. If your UPS is a long backup
