User Manual

Smart-UPS 750/1000/1500/2200/3000 VA 120/230 Vac Tower / Rack-Mount 2U22
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 AC power. Be sure the power cable is securely connected to the unit and to the AC 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
AC voltage.
Check the AC power supply to the UPS by plugging in a table lamp. If the light is
very dim, check the AC voltage.
The battery connector plug is not
securely connected.
Be sure that all battery connections are secure.
There is an internal UPS error detected. 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 AC 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 AC voltage display. If acceptable to the connected equipment, reduce the
UPS sensitivity.
UPS is emitting intermittent beeps.
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 AC power is restored.
The Error LED is illuminated. The UPS displays an error message and emits a constant beeping sound.
Internal UPS error detected. Do not attempt to use the UPS. Turn the UPS off and have it serviced
immediately.
The Replace Battery icon 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 icon is flashing and the UPS beeps for once every 2 seconds.
The replacement battery is not properly
connected.
Be sure that the battery connector is securely connected.
The UPS displays a site wiring error message.
Wiring errors detected include missing
ground, hot-neutral, polarity reversal,
and overloaded neutral circuit.
If the UPS indicates a site wiring error, have a qualified electrician inspect the
building wiring. (Applicable for 120 V units only.)