Troubleshooting

Use the chart below to solve minor UPS installation problems. Contact APC Technical Support Staff (see How to Contact APC, page 3) for assistance with complex UPS problems.

Problem and Possible Cause

Solution

UPS will not turn on.

 

• ON button not pushed.

Press the ON button once to power the UPS and the connected

 

equipment.

• UPS not connected to AC power

Check that the power cable from the UPS to the utility power

supply.

supply is securely connected.

• UPS’s input circuit breaker tripped.

Reduce the load on the UPS by unplugging equipment and reset

 

the circuit breaker (on back of UPS) by pressing the plunger

 

back in.

• Very low or no utility voltage.

Check the AC power supply to the UPS with a table lamp. If

 

very dim, have the utility voltage checked.

• Battery not connected properly.

Check that the battery connector is fully engaged.

UPS will not turn off.

 

• Internal UPS fault.

Do not attempt to use the UPS. Unplug the UPS and have it

 

serviced immediately.

UPS operates on-battery although normal line voltage exists.

• UPS’s input circuit breaker tripped.

Reduce the load on the UPS by unplugging equipment and reset

 

the circuit breaker (on back of UPS) by pressing the plunger

 

back in.

• Very high, low, or distorted line

Move the UPS to a different outlet on a different circuit. Test

voltage. Inexpensive fuel powered

the input voltage with the utility voltage display. If acceptable

generators can distort the voltage.

to the connected equipment, reduce the UPS’s sensitivity. See

 

Voltage Sensitivity, page 12, for procedures.

UPS beeps occasionally.

 

• Normal UPS operation.

None. The UPS is protecting the connected equipment.

UPS does not provide expected backup time.

• The UPS’s battery is weak due to a

Charge the battery. Batteries require recharging after extended

recent outage or is near the end of

outages. Also, they wear faster when put into service often or

its service life.

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 is not yet lit.

• The UPS is overloaded.

Check the UPS’s load bar display. Unplug less needed

 

equipment, such as printers.

Front panel indicators (the six in the center) light sequentially.

• The UPS has been shut down by

None. The UPS will restart automatically when utility power

remote control.

returns. The indicators illuminate from top to bottom then

 

bottom to top.

• The UPS has been put into sleep

None. The UPS will restart automatically when the sleep timer

mode by remote control.

expires. The indicators illuminate from top to bottom then back

 

to the top.

17

990-7096 Rev. 2

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American Power Conversion 100 VAC user manual Troubleshooting
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100 VAC specifications

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