20
6
Trouble shooting
Error
Cause
Remedy
Yellow LED is
lighting, but audible
alarm is heard
intermittently.
UPS not connected
properly to the mains.
Connect the UPS
according to the
installation guide.
UPS is functioning
but audible alarm is
heard periodically.
UPS overload.
Verify that the load
matches the UPS
capacity specified in the
spec.
Software not installed
well.
Check the setting of the
software.
Communication
lost between UPS
and Computer.
Cable is not properly
connected.
Check if the RS232 or
USB cable is firmly
connected to the
COM1/COM“ or USB of
the computer and confirm
the setting.
Red LED is
lighting, alarm is
heard continuously.
Hardware error in the
UPS.
Contact dealer!
If any abnormal situations occur that are not listed above,
please call the service centre immediately or contact our
hotline (see page 4)