Troubleshooting
Problem and/or Possible Cause
Solution
There is no utility power
There is no utility power and the UPS is off.
Use the cold start feature to supply power to the connected equipment front the UPS battery(s).
Press and hold the 
button. There will be a short beep followed by a longer beep. Release the button during the second beep.
UPS operates on battery although line voltage exists
The UPS input circuit breaker trips. | Unplug all nonessential equipment from the UPS. | |
| Reset the circuit breaker. | |
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Your system is experiencing very high, | Move the UPS to a different outlet on a different circuit: Inexpensive fuel | |
low or distorted line voltage. | powered generators may distort the voltage. Test the input voltage with the | |
| utility voltage display, (see Operation). If acceptable to the connected | |
| equipment, reduce the UPS sensitivity. | |
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Battery Charge and Load LEDs flash simultaneously | ||
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The UPS has shut down. | Check that the room temperature is within the specified limits for operation. | |
The internal temperature of the UPS has | Check that the UPS is properly installed, allowing for adequate ventilation. | |
exceeded the allowable threshold for | Allow the UPS to cool down. Restart the UPS. If the problem persists, | |
safe operation. | ||
contact APC at www.apc.com. | ||
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Diagnostic utility voltage |
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All five LEDs are illuminated. | The line voltage is extremely high and should be checked by an electrician. | |
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There is no LED illumination. | The line voltage is extremely low and should be checked by an electrician. | |
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On Line LED |
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There is no LED illumination. | The UPS is running on battery, or it must be turned on. | |
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The LED is blinking. | The UPS is running an internal | |
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