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Smart-UPS 750/1000/1500/2200/3000 VA 100/120/230 Vac 500 VA 100 Vac Tower12
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 key once to turn on the UPS.
The UPS is not connected to utility power. Be sure the power cable is securely connected to the unit and to the utility power
supply.
The input circuit breaker has tripped. Reduce the load on the UPS. Disconnect nonessential equipment and reset the circuit
breaker.
The unit shows very low or no input utility
voltage.
Check the utility 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.
Be sure 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 on 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 emits a beep.
The UPS is operating normally. None. The UPS is protecting the connected equipment.
UPS does not provide expected backup time.
The UPS battery is weak due to a
recent power 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 indicator has not illuminated.
The UPS is experiencing an overload
condition.
Check the UPS load display. Unplug unnecessary equipment, such as printers.
Display interface LEDs 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 is restored.
The Fault LED is illuminated. The UPS displays a fault message and emits a constant beeping sound.
Internal UPS fault. Do not attempt to use the UPS. Turn the UPS off and have it serviced immediately.
The Replace Battery LED is illuminated and the UPS beeps for one minute every five hours.
The battery has a weak charge. Allow the battery to recharge for at least four hours. Then, perform a self-test. If the
problem persists after recharging, replace the battery.
The Replace Battery LED is flashing and the UPS beeps once every 2 seconds.
The replacement battery is not
properly connected.
Be sure that the battery connector is securely connected.
The display interface has a Site Wiring Fault message.
Wiring faults detected include
missing ground, hot-neutral,
polarity reversal, and overloaded
neutral circuit.
If the UPS indicates a site wiring fault, have a qualified electrician inspect the building
wiring. (Applicable for 120 V units only.)