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PROBLEM AND POSSIBLE
C
AUSE
S
OLUTION
BYPASS AND OVERLOAD LEDS ARE LIT; UNINTERRUPTIBLE POWER SUPPLY EMITS A SUSTAINED
ALARM TONE
The uninterruptible power sup-
ply is overloaded. The con-
nected equipment is drawing
more VA or more watts than
the uninterruptible power sup-
ply can sustain.
The connected equipment exceeds the specified maximum load.
The alarm remains on until the overload is removed. Disconnect nonessen-
tial equipment from the uninterruptible power supply to eliminate the over-
load.
The uninterruptible power supply continues to supply power as long as it is
online and the circuit breaker does not trip; the uninterruptible power sup-
ply will not provide power from batteries in the event of a utility voltage
interruption.
If a continuous overload occurs while the uninterruptible power supply is
on battery, the unit turns off output in order to protect the uninterruptible
power supply from possible damage.
BYPASS LED IS LIT
The bypass switch has been
turned on manually.
If bypass is the chosen mode of operation, ignore the lit LED.
If bypass is not the chosen mode of operation, move the bypass switch on
the back of the uninterruptible power supply to the normal position.
FAULT AND OVERLOAD LEDS ARE LIT; UNINTERRUPTIBLE POWER SUPPLY EMITS A SUSTAINED
ALARM TONE
The uninterruptible power sup-
ply has stopped sending power
to connected equipment.
The connected equipment exceeds the specified maximum load.
Disconnect nonessential equipment from the uninterruptible power supply
to eliminate the overload condition.
Press the off button, then the on button to restore power to connected equip-
ment.
FAULT LED LIT
There is an internal uninterrup-
tible power supply fault.
Do not attempt to use the uninterruptible power supply. Turn off the unit
and have it serviced immediately.
REPLACE BATTERY LED IS LIT
The replace battery LED
flashes and a short beep is
emitted every two seconds to
indicate the battery is discon-
nected.
Check that the battery connectors are fully engaged.
The battery is weak. Allow the battery to recharge for 24 hours. Then, perform a self-test. If the
problem persists after recharging, replace the battery.
A battery self-test has failed. The uninterruptible power supply emits short beeps for one minute and the
replace battery LED is lit. The uninterruptible power supply repeats the
alarm every five hours. Perform the self-test procedure after the battery has
charged for 24 hours to confirm the replace battery condition. The alarm
stops and the LED clears if the battery passes the self-test.
UNINTERRUPTIBLE POWER SUPPLY OPERATES ON BATTERY ALTHOUGH NORMAL LINE VOLTAGE
EXISTS
There is very high, low, or
distorted line voltage.
Move the uninterruptible power supply to a different outlet on a different
circuit. Inexpensive fuel powered generators might distort the voltage. Test
the input voltage with the utility voltage display. See Operation.