Troubleshooting
Use the chart below to solve minor UPS installation problems. Contact APC Technical Support Staff for assistance with complex UPS problems. See APC Contact Information, page 19, for a location near you.
Problem and Possible Cause |
| Solution |
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UPS will not turn on. |
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• ON button not pushed. |
| Press the ON button once to power the UPS and the load. |
| ||
• UPS not connected to AC power supply. |
| Check that the power cable from the UPS to the power supply is |
|
| securely connected at both ends. |
• UPS 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. |
| Confirm the battery connections. |
|
|
|
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 | ||
• 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 voltage. |
| Move the UPS to a different outlet on a different circuit. |
Inexpensive fuel powered generators can distort |
| Test the input voltage with the utility voltage display. If acceptable |
the voltage. |
| |
| to the load, reduce the UPS’s sensitivity. Refer to Voltage | |
|
| Sensitivity, page 8, for instructions. |
UPS beeps occasionally. |
|
|
• Normal UPS operation. |
| None. The UPS is protecting the load. |
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|
|
UPS does not provide expected backup time. |
|
|
• The UPS’s battery is weak due to recent outage |
| Charge the battery. Batteries require recharging after extended |
or is near the end of its service life. |
| outages. Also, they wear faster when put into service often or |
|
| 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 display. Unplug less needed equipment, such |
|
| as printers. |
Front panel indicators flash sequentially. |
|
|
• The UPS has been shut down by remote control. |
| None. The UPS will restart automatically when utility power |
| ||
|
| returns. |
|
|
|
All indicators are lit and UPS emits a constant beeping. | ||
• Internal UPS fault. |
| Do not attempt to use the UPS. Turn the UPS off and have it |
| ||
|
| serviced immediately. |
|
|
|
All indicators are off and UPS is plugged into wall outlet. | ||
• The UPS is shut down and the battery is |
| None. The UPS will return to normal operation when the power is |
discharged from an extended outage. |
| restored and the battery has a sufficient charge. |
|
|
|
The replace battery light is lit. |
|
|
• Weak batteries. |
| Do another self test to see if it clears. |
| ||
• Replacement batteries not connected properly. |
| Confirm the battery connections. |
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| 18 |
