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7.1 Troubleshooting Chart
PROBLEM POSSIBLE CAUSE ACTION TO TAKE
UPS will not turn on (lamp within
power I/0 switch is not illuminated),
but beeps when power I/0 switch
is on.
1. Line cord plug is loose. 1. Check fit of line cord plug.
2. Rear panel circuit breaker is
tripped.
2. Circuit breaker is tripped when
button is extended. Unplug
excessive loads and reset breaker
(press button).
3. Dead wall socket. 3. Check wall socket with a table
lamp.
UPS occasionally emits beep,
computer equipment operates
normally.
The UPS is briefly transferring your
equipment to its alternate power
source due to utility voltage sags or
spikes.
This operation is normal. The UPS
is protecting your computer
equipment from abnormal utility
voltages.
UPS emits beep very often, more
than once or twice an hour.
Computer equipment operates
normally.
Utility voltage is distorted or branch
circuits are heavily loaded.
Have your line voltage checked by
an electrician. Operating your UPS
from an outlet which is wired to a
different branch fuse or circuit
breaker may help.
UPS does not provide expected run
time. Low battery warning is
sounded prematurely.
1. Excessive loads connected at
UPS’s output receptacles.
1. Unplug excessive loads from
UPS. Recheck computer system
power requirements as described
in installation instructions.
2. Battery is weak due to wear or
recent operation during utility power
outage.
2. The battery should be recharged
by leaving the UPS plugged in for 6
hours - do not operate Test control
during recharge. If UPS sounds
low battery warning prematurely
when retested, battery should be
replaced.
UPS emits loud tone during utility
failure. Power I/O switch is on but
computer equipment is not
powered. Rear panel circuit
breaker is not tripped.
UPS has shut down due to
overload.
Turn off UPS and unplug excessive
loads. Recheck computer system
power requirements as described
in installation instructions. UPS may
be turned on when utility has been
restored.