Schneider Electric SMART-UPS 750VA - Manual (Page 15)

Smart-UPS X-Series Operation 12
Troubleshooting
Problem and Possible Cause Solution
The UPS will not turn on or there is no output
The unit has not been turned on. Press the ON button once to turn on the UPS.
The UPS is not connected to utility
power. Ensure that the power cable is securely connected to the unit and to the utility
power supply.
The input circuit breaker has tripped. Reduce the load to the UPS, disconnect nonessential equipment and reset the
circuit breaker.
The unit shows very low or no input
utility voltage. Check the AC power supply to the UPS by plugging in a table lamp. If the
light is very dim, check the utility voltage.
The battery connector plug is not securely
connected. Ensure that all battery connections are secure.
There is an internal UPS fault. Do not attempt to use the UPS. Unplug the UPS and have it serviced
immediately.
The UPS is operating on battery, while connected to input utility power
The input circuit breaker has tripped. Reduce the load to the UPS, disconnect nonessential equipment and reset the
circuit breaker.
There is very high, very low, or distorted
input line voltage. Move the UPS to a different outlet on a different circuit. Test the input voltage
with the utility voltage display. If acceptable to the connected equipment,
reduce the UPS sensitivity.
UPS is emitting an audible beeping sound
The UPS is in normal operation. None. The UPS is protecting the connected equipment.
UPS does not provide expected backup time
The UPS battery is weak due to a recent
outage or is near the end of its service
life. Charge the battery. Batteries require recharging after extended outages and
wear out faster when put into service often or when operated at elevated
temperatures. If the battery is near the end of its service life, consider
replacing the battery even if the replace battery LED indicator is not yet
illuminated.
The UPS is overloaded. Check the UPS load display. Unplug unnecessary equipment, such as printers.
Display interface indicators flash sequentially
The UPS has been shut down remotely
through software or an optional accessory
card. None. The UPS will restart automatically when utility power returns.
All indicators are lit and the UPS emits a constant beeping sound
Internal UPS fault. The fault LED is illuminated and the unit displays a fault message. Do not
attempt to use the UPS. Turn the UPS off and have it serviced immediately.