Troubleshooting
Smart-UPS RT SURTA1500XL/SURTA1500XLJ/SURTA2000XL Uninterruptible Power Supply User Manual 13
Bypass and Overload LEDs are illuminated and the UPS emits a sustained alarm tone (Refer to “Display
Panel Indicators” on page 6.)
The UPS is overloaded. The connected equipment exceeds the specified “maximum load” as
defined in Specifications on the APC web site, www.apc.com.
The alarm remains on until the overload is removed. Disconnect nonessen-
tial equipment from the UPS to eliminate the overload condition.
The UPS continues to supply power in the bypass mode and the circuit
breaker does not trip; the UPS will not provide power from batteries in the
event of a utility voltage interruption.
Bypass LED is illuminated (Refer to “Display Panel Indicators” on page 6.)
The bypass has been turned on through
an accessory.
If bypass is the chosen mode of operation, ignore the illuminated LED.
Fault LED is illuminated (Refer to “Display Panel Indicators” on page 6.)
Internal UPS fault. Do not attempt to use the UPS. Turn the UPS off and have it serviced
immediately.
Fault and Overload LEDs illuminated and UPS emits a sustained alarm tone (Refer to “Display Panel
Indicators” on page 6.)
The UPS has ceased sending power to
connected equipment.
The connected equipment exceeds the specified “maximum load” as
defined in Specifications on the APC web site, www.apc.com.
Disconnect nonessential equipment from the UPS to eliminate the over-
load condition.
Press the button, then the button to restore power to connected
equipment.
The Replace Battery/Battery Disconnected LED is illuminated (Refer to “Display Panel Indicators” on
page 6.)
Battery is disconnected.
flashes and a short beep is emitted
every two seconds to indicate the bat-
tery is disconnected.
Check that the battery connectors are fully engaged.
Weak battery. Allow the battery to recharge for 24 hours and perform a self-test. If the
problem persists after recharging, replace the battery.
Failure of a battery self-test.
flashes and a short beep is emitted
for one minute. The UPS repeats the
alarm every five hours.
Allow the battery to recharge for 24 hours. Perform the self-test procedure
to confirm the replace battery condition. The alarm stops and the LED
clears if the battery passes the self-test.
If the battery fails again, it must be replaced. UPS output is maintained
during the self-test.
Problem and/or Possible Cause Solution
(13 pages)
(14 pages)
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