Apc 600 User Manual download pdf (Page 33)

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 ( I ) 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 ( I )

position (see Sec. 5.5).

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Apc 600 User Manual Page 33