22
Troubleshooting
Trouble Shooting Guide Table
Problem
Possible Cause
Action to Take
UPS no reaction while AC
is connected
1. Power cord plug is loose
2. Fuse on rear panel blown
(Inside the drawer of inlet)
3. Dead wall socket
1. Check the power cord plug
2. Replace fuse
3. Check wall socket with a
table lamp.
Power output is normal, UPS
emits continuous beep,
status LED shows RED, or
LCD shows “overload”.
UPS is over loaded
Turn off UPS and unplug
excessive loads from UPS.
No power on outlets, UPS
emits continuous beep,
status LED show RED or
LCD shows “over load”.
UPS has shut down due to
severe overload.
Unplug excessive loads from
UPS, press button to reset the
buzzer, and turn on the UPS
again.
UPS does not provide
expected run time
1.Excessive loads
connected at UPS’s
outlets.
2. Battery is weak and cannot
provide enough capacity.
Do not operate the UPS with
load, and leave the UPS
plugged in for 10 hours.
Then, test it again, if UPS still
cannot provide expected run
time, battery should be
replaced.
Button on front panel
doesn’t work
1.The CPU inside UPS is
not running correctly.
2. Button damaged.
1. Push the button for 10
seconds to reset the UPS.
2. Unplug power cord and all
loads from the UPS to let it
shut down automatically,
and call for service.
When push button for
testing under AC mode,
UPS emits urgent beep
(8 beeps per sec.) and
RED LED blinks, or
LCD display shows
“battery replacement” at
the same time.
Battery is weak and should be
replaced
Replace batteries.
UPS can not be turned on 1. Battery polarity wrong
2. UPS fault
1. Check battery connection.
2. Call for service.