PROBLEM AND POSSIBLE |
| SOLUTION |
CAUSE |
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BYPASS LED ILLUMINATES |
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The bypass switch has been |
| If bypass is the chosen mode of operation, ignore the illuminated LED. |
turned on manually or through |
| If bypass is not the chosen mode of operation move the bypass switch on the |
an accessory. |
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| back of the UPS, to the normal position. | |
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FAULT AND OVERLOAD LEDS ILLUMINATE, UPS EMITS A SUSTAINED ALARM TONE | ||
The UPS has ceased sending |
| The connected equipment exceeds the specified “maximum load” as defined in |
power to connected equipment. |
| Specifications on the APC Web site, www.apc.com. |
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| Disconnect nonessential equipment from the UPS to eliminate the overload |
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| condition. |
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| Press the OFF button, then the ON button to restore power to connected |
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| equipment. |
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FAULT LED ILLUMINATES |
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Internal UPS fault. |
| Do not attempt to use the UPS. Turn the UPS off and have it serviced |
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| immediately. |
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REPLACE BATTERY LED ILLUMINATES | ||
Replace Battery LED flashes and |
| Check that the battery connectors are fully engaged. |
short beep is emitted every two |
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seconds to indicate the battery is |
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disconnected. |
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Weak battery. |
| Allow the battery to recharge for 24 hours. Then, perform a |
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| problem persists after recharging, replace the battery. |
Failure of a battery |
| The UPS emits short beeps for one minute and the Replace Battery LED |
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| illuminates. The UPS repeats the alarm every five hours. Perform the |
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| procedure after the battery has charged for 24 hours to confirm the Replace |
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| Battery condition. The alarm stops and the LED clears if the battery passes the |
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UPS OPERATES ON BATTERY ALTHOUGH NORMAL LINE VOLTAGE EXISTS | ||
Very high, low, or distorted line |
| Move the UPS to a different outlet on a different circuit. Test the input voltage |
voltage. Inexpensive fuel |
| with the utility voltage display. |
powered generators can distort |
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the voltage. |
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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 |
| If the UPS is plugged into a properly functioning utility power outlet, the line |
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| voltage is extremely low. |
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ONLINE LED |
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There is no LED illumination |
| The UPS is running on battery, or it is not turned on. |
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The LED is blinking |
| The UPS is running an internal |
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17