User manual

- 9 -
Troubleshooting
This section describes possible causes and solutions for the
following problems:
• Unit will not turn on.
• WIRING OK indicator LED is not illuminated.
Unit will not turn on
Probable Cause: Input power cord is not connected
properly.
Solution: Ensure the supplied power cord is
connected securely at both ends.
Probable Cause: No power or insufficient power at wall
outlet.
Solution: Ensure the wall outlet has good power
by checking it with a voltmeter, or by
plugging in a known good device.
Note: The unit will not turn on and accept incoming
utility power if the power is outside the acceptable
range.
Note: If the problem is not resolved, contact APC Technical
Support at 888-88APCAV or visit: www.apcav.com.
Probable Cause: Unit is overloaded.
Solution: If the
Overload LED is illuminated, we
recommend that the load be reduced by
unplugging the connected devices on at
a time.