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7. Trouble Shooting
This section describes how to find the troubles when UPS is abnormal. We suggest you to follow the
service procedure below:
1. Check the UPS status via LED and LCD display, the sound of the buzzer and get the warning
or fault code via the RS232 if possible, otherwise listen to the description of end users.
2. Inspect failure board for static checking.
3. Replace failure components.
4. Static checking.
5. Power-on checking.
6. Test after repair.
Following section will help service person to solve the most problems.
7.1 LCD Panel Display Pattern Definition
7.1.1 Trouble shooting for warning icon in LCD display
Any warning display implies some abnormity happened to the UPS, indicating that some situation that
may endanger the reliability of the UPS has occurred, but these situations don’t immediately lead to
interruption of power supply.
LCD icon (Flashing)
Code
Alarm
Possible cause
Action
01
1 Beeping / second
Battery disconnected
Check the battery wiring
07
1 Beeping / second
Battery/Charger voltage too
high
Check the output voltage of
the battery and the charger
08
1 Beeping / second
Low battery
Check the battery voltage
09
2 Beeping / second
Over load
Check the loads
0B
1 Beeping / second
EPO plug or cable not
connected
Check the EPO plug and
EPO cable
0A
1 Beeping / second
Fan failure
Check the fans
0D
1 Beeping / second
high internal temperature
Check the loads, ventilation,
ambient temperature
0E
1 Beeping / second
Charger broken or low
output voltage
Check the charger
10
1 Beeping / second
I/P fuse broken
Check the I/P fuse
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