Condition | Power | On | Overloa | General | Audible alarm | Can |
| On LED | Battery | d LED | Alarm LED |
| alarm be |
| (green) | LED | (red) | (red) |
| silenced |
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| (yellow) |
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| g an |
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| audible |
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| alarm" |
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| on page |
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| 24)? |
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On | Off | Flashing | Off | Flashing | No | |
voltage is out of |
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range |
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On | Flashing | Flashing | Off | Flashing | No | |
wave is abnormal |
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For the location of individual LEDs, see "UPS front panel LED indicators (on page 8)."
UPS does not start
Action:
1.Be sure that the power cord is plugged in to a utility power receptacle.
2.Check the power source at the utility power receptacle.
3.Allow the UPS batteries to charge for 24 hours.
UPS operates on battery only
Action:
1.Save your work.
2.Power down the load devices connected to the UPS output receptacles.
3.Remove one or more load devices to reduce the power requirements.
4.Be sure the UPS configuration matches the utility voltage. Refer to "Selecting the UPS voltage configuration (on page 19)."
UPS frequently switches between utility and battery power
Action:
1.Check the input voltage and reconfigure the UPS ("Selecting the UPS voltage configuration" on page 19).
2.Contact a qualified electrician to verify that the utility power is suitable for the UPS.
UPS does not provide the expected backup time
Action:
Troubleshooting 34