POLARIS 10●15●20●30●40●60●80●100●120●160
TRIPHASE-TRIPHASE
Rev. 04 – 06 December 2016
29
APPENDIX 2: PROBLEMS AND SOLUTION
In case the UPS cannot 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.
N°
PROBLEM
POSSIBLE REASON
SOLUTION
1
Utility is connected but the UPS
cannot be powered ON.
Input power supply is not connected
Input voltage low
The input switch of the UPS is not switched on
Measure if the UPS input voltage/frequency is
within the window
Check if UPS input is switched on
2
Utility normal but Utility LED
does not light on and the UPS
operates at battery mode
Input breakers of the UPS are not switched on
Input cable is not well connected
Switch on the input breaker
Make sure the input cable is well connected
3
The UPS does not indicate any
failure but output do not have
voltage
Output cable does not well connected
Output breaker do not switch on
Make sure the output cable is well connected
Switch on the output breaker
4
Utility LED is flashing
Utility voltage exceeds UPS input range
If the UPS operates at battery mode, please pay
attention to the remaining backup time needed
for your system
5
Battery LED is flashing but no
charge voltage and current
Battery breaker does not switch on or batteries
are damaged, or battery is reversely connected
Battery number and capacity are not set
correctly
Switch on the battery breaker. If batteries are
damaged, need to replace whole group batteries
Connect the battery cables correctly
Go to LCD setting of the battery number and
capacity and set the correct data
6
Buzzer beeps every 0.5
seconds and LCD display “fault
/ overload”
Overload
Remove some load
7
The UPS only works on bypass
mode
The UPS is set to ECO mode or the transfer
times to bypass mode are limited
Set the UPS working mode to UPS type
(non-parallel) or to reset the times of transferring
to bypass or re-start the UPS
8
Cannot Cold start
Battery switch is not properly closed
Battery fuse is open
Battery low
Battery quantity set wrong
Power breaker in the rear panel not switch ON
Close the battery switch
Change the fuse
Recharge the battery
Power ON the UPS with AC to set the battery
quantity &quantity
Switch on the power breaker