LEGRAND NUMERIC HPi 33 EVO User Manual page 38

APPENDIX 2 PROBLEMS AND SOLUTION
In case the UPS does not function normally, please check installation, wiring or operation first. If all these aspects
are checked and there is no problem, please consult with local partner immediately 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
Utility is connected
1 but the UPS cannot be
powered ON.
Utility normal but Utility
LED does not light on,
2
and the UPS operates at
battery mode.
The UPS does not
indicate any failure,
3
but output do not have
voltage.
4 Utility LED is flashing.
Battery LED is flashing
5 but no charge voltage
and current.
Buzzer beeps every 0.5
6 seconds and LCD display
"OUTPUT OVERLOAD".
Buzzer long beeps, LCD
7
display "29"fault code.
38
Possible reason
Input power supply is not
connected; Input voltage low;
The input switch of the UPS is
not Switched ON.
The input breakers of the UPS
are not Switched ON; input
cable is not well connected.
Output cable is not connected
properly; Output breaker do
not switch ON.
Utility voltage exceeds UPS
input range.
Battery breaker does not
Switch ON, or batteries
are damaged, or battery is
reversely connected. Battery
number and capacity are not
set correctly.
Overload.
The UPS output is in short
circuit.
Solution
Measure if the UPS input voltage/
frequency is within the window.
Check if UPS input is Switched ON.
Switch ON the input breaker;
Make sure the input cable is well
connected.
Make sure the output cable is well
connected; Switch ON the output breaker.
If the UPS operates at battery mode,
please pay attention to the remaining
backup time needed for your system.
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, set the correct data.
Remove some load.
Make sure the load is not in short circuit,
and then restart the UPS.