0 difficulty – APC 600 User Manual

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7.0 Difficulty

7.1 Troubleshooting

PROBLEM:

UPS will not turn on

Possible cause:

UPS Enable switch is in the off position or the power
on switch is not pressed.

Solution:

Turn on the rear panel UPS Enable switch. Press front-
panel power on switch to energize UPS and loads.

Possible cause:

UPS’s circuit breaker is tripped (button is extended).

Solution:

Reduce the UPS’s load by unplugging equipment and
reset the circuit breaker (press button on rear panel).

Possible cause:

Very low utility voltage or dead outlet.

Solution:

Check outlet with a table lamp. If very dim, have
utility voltage checked by an electrician.

PROBLEM:

UPS operates on-battery even though normal line
voltage is thought to exist.

Possible cause:

UPS’s circuit breaker is tripped (button is extended).

Solution:

Unplug equipment to reduce the UPS’s load. Press the
button on the rear panel to reset circuit breaker.

Possible cause:

Very high, low, or badly-distorted line voltage.

Solution:

Test the input voltage with UPS’s line voltage bar
graph (see Sec. 5.3). Inexpensive fuel powered
generators can cause distorted line voltages—set
Option Switch 1 to the on (

) position.

PROBLEM:

UPS “beeps” occasionally.

Possible cause:

This is normal; the UPS is protecting your computer
equipment from momentary sags or swells.

PROBLEM:

UPS beeps more than once or twice an hour.

Possible cause:

Chronically high or distorted line voltage.

Solution:

Set Option Switches 1 and 2 to match input voltage
range. Alternatively, set Option Switch 3 to the on (

)

position (see Sec. 5.5).