6. DC start
All series are equipped with DC Start. To start UPS when AC utility
power is not available, simply press the power switch.
TROUBLE SHOOTING
Symptom
No LED display
on the front panel
Alarm buzzer beeps
continuously when
AC supply is normal
When power
failure, back-up
time is shorten
Possible Cause
1. Battery weak
2. Battery defect
3. Power switch is
not pressed
Overload of the UPS
1. Overload of the
UPS
2. Battery voltage is
too low
9
Power Switch
Proposed Action
1. Charge battery up
to 8 hours
2. Replace with the
same type of
battery
3. Press the power
switch again
Verify that the load
matches the UPS
capability specified in
the specs
1. Remove some
non-critical load
2. Charge battery
8 hours or more