Appendix 2 Problems and Solution
In case the UPS can not work normally, it might be wrong in installation, wiring or operation.
Please check these aspects first. If all these aspects are checked without any problem, please
consult with local agent right away and provide below information.
（
1
）
Product model name and serial number.
（
2
）
Try to describe the fault with more details, such as LCD display info, LED lights status,
etc.
Read the user manual carefully, it can help a lot for using this UPS in the right way. Some FAQ
(frequently asked questions) may help you to troubleshoot your problem easily.
No.
Problem
Possible reason
Solution
1
Utility is connected
but the UPS can not
be powered ON.
Input power supply is not
connected;
Input voltage low;
The input switch of the
module is not switched on.
Measure
if
the
UPS
input
voltage/frequency
is
within
the
window.
Check if all modules input are
switched on
2
Utility normal but
Utility LED does not
light on, and the
UPS operates at
battery mode
The input breakers of the
Modules are not switched on;
input
cable
is
not
well
connected
Switch on the input breaker;
Make sure the input cable is well
connected.
