7. TROUBLE SHOOTING
Problem
Possible Cause
Action to Take
UPS no reaction while AC is
connected
1. Line cord plug is loose
2. Fuse on rear panel blown
(Inside the drawer of inlet)
3. Dead wall socket
1. Check the line cord plug
2. Replace fuse
3. Check wall socket with a table lamp.
Power output is normal, UPS
emits continuous beep, LCD
shows “overload”.
UPS is over loaded
Turn off UPS and unplug excessive
loads from UPS.
No power on outlets, UPS emits
continuous beep, 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, 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.
Unplug the line cord & push the button
for 15 seconds to reset the UPS.
2. Unplug all loads and line cord from the
UPS to let it shut down automatically,
and call for service.
To push button for testing
under AC mode, UPS emits
urgent beep, and LCD
display shows “battery
replacement” at the same
time.
Battery is weak and should be
replaced
Replace batteries.
UPS cannot be turned on.
1. Battery polarity wrong
2. UPS fault
1. Check battery connection.
2. Call for service.
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