7 Troubleshooting
Three-Phase UPS (10kVA-160kVA) Series
User Manual
92
7 Troubleshooting
This chapter mainly introduces the troubleshooting of UPS, including identifying UPS status, deal
with emergency fault ,etc.
7.1 Identify UPS Status
After turning on UPS, if UPS works abnormally, please refer to Table7-1 to find possible reason.
Meanwhile, check whether the fault is caused by external environment, such as temperature,
humidity are not accordance with requirements or UPS is overload.
Table7-1 only includes some simple diagnosis. If the diagnosis is not clear, or not sufficient to solve
problem, please contact with local agency or dealer to deal with.
Table7-1
Common troubleshooting
No. Abnormal
phenomena
Fault diagnosis and checking items
Solution
1
red
indicator is on.
Check if mains switch is switched on and
fuse is OK.
—
Check if the range of mains voltage is
normal.
Check the input voltage by
multimeter.
Check if the phase of AC input is wrong.
Change the phase sequence of
mains input wire of rectifier.
2
The inverter can't
output normally
and the buzzer
beeps
continuously.
The rectifier doesn't start completely. The
buzzer beeps continuously and battery
low-voltage indicator is on. Battery input
switch is not switched on.
Wait the rectifier starting and
buzzer beeping will be removed.
Output
is
overload.
The
indicator is normal.
Reduce load.
