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6. Troubleshooting
The Eaton 3S is designed for durable, automatic operation and alerts you whenever potential operating problem may
occur.
The following table describes typical conditions:
Problem Possible cause Action
The battery backup outlets 2
are not supplied with power.
ON/OFF Button 9is not pressed. Press ON/OFF button 9for 1.5 seconds
and check that LED 3turns to green.
The connected devices are not
supplied when AC power fails.
The devices are not connected to the
battery backup outlets 2.
Connect the devices to the battery backup
outlets 2.
AC power is available, but
the UPS operates on battery
power.
Circuit breaker 4has been tripped by an
overload on the UPS output.
Disconnect excess equipment and reset
the circuit breaker 4by pressing the
corresponding button.
The filtered outlets 1and 2
are not supplied.
The wall outlet is not supplied.
Circuit breaker 4has been tripped by an
overload on the UPS output.
Supply power from the wall outlet.
Disconnect excess equipment and reset
the circuit breaker 4by pressing the
corresponding button.
Green LED 3flashes every 1
second and audio alarm beeps
every 5 seconds.
The UPS frequently operates on battery
power because the AC power source is of
poor quality.
Have the electrical installation checked
by a professional or use another wall
outlet.
Green LED 3flashes every 1
second and audio alarm beeps
every 1 second.
The UPS battery backup outlets 2are
overloaded.
Disconnect excess equipment connected
to the battery backup outlets.
Red LED 3is on and the audio
alarm beeps continuous.
A fault has occurred on the UPS. The
battery backup outlets 2are no longer
supplied.
Contact Eaton service and support.
The telephone line is disturbed
or modem access is not
possible.
Surge protection on the telephone line is
no longer provided.
Disconnect the telephone line from the
wall outlet.
Contact Eaton service and support.
USB communication fails. Cable connection may be defective. Re-connect the USB cable 13 , if still
not available Contact Eaton service and
support.
USB charger ports 6are not
supplied.
The battery voltage is too low. Recharge the battery, if still not available
contact Eaton service and support.