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7.0 Difficulty
7.1 Troubleshooting chart
PROBLEM POSSIBLE CAUSE ACTION TO TAKE
UPS will not turn on.
1. UPS Enable switch is in the off
position or front panel switch not
pressed.
1. Turn on the rear panel UPS Enable switch.
Press front panel switch to power UPS and
loads.
2. UPS’s input circuit breaker is
tripped (button is extended).
2. Reduce the UPS’s load by unplugging
equipment and reset the circuit breaker (press
button on rear panel).
3. Very low utility voltage or dead
outlet.
3. Check outlet with a table lamp. If very dim,
have utility voltage checked by an electrician.
1. UPS’s input circuit breaker is
tripped (button is extended).
1. Reduce the UPS’s load by unplugging
equipment and reset the circuit breaker (press
button on rear panel).
UPS operates on-battery
even though normal line
voltage is thought to exist.
2. Very high, low or badly
distorted line voltage.
2. Test the input voltage with UPS’s Line
voltage bar graph - see section 5.0.
Inexpensive fuel powered generators can
cause distorted line voltages - set Option
switch 1 to the on ( I ) position.
UPS "beeps" occasionally. This is normal.
The UPS is protecting your computer
equipment from momentary sags or swells.
UPS beeps more than once
or twice an hour.
Chronically high or distorted line
voltage.
Set Option switches 1 and 2 to match input
voltage range. Alternatively, set Option switch
3 to the on ( I ) position - see section 5.0.
UPS does not provide
expected back up time.
1. UPS’s battery is weak due to
recent utility outage or wear.
1. The UPS’s batteries require recharging
following an extended outage. The batteries
will wear faster when put into service often
and when operating at elevated temperatures.
2. UPS is overloaded. 2. Check load using UPS’s Output power bar
graph - see section 5.0. Unplug non-critical
equipment such as printers.
Indicators on front panel flash
in a "marquee" fashion.
UPS has been shut down by
computer software.
UPS will restart when AC power returns.
All indicators are illuminated
and UPS emits constant tone.
Internal UPS fault.
Do not attempt to use UPS. Turn off UPS and
have it serviced immediately.
Site wiring fault light is
illuminated - UPS operates
normally.
Building wiring error such as
missing ground or hot-neutral
reversal.
A qualified electrician should be summoned to
correct the building wiring.
Low battery light is illuminated
and on-line light is
extinguished.
UPS is shut down and battery is
discharged due to extended
power failure.
UPS will return to normal operation when
power is restored and battery has charged
sufficiently.
Replace battery light is
illuminated.
Weak battery.
Allow the batteries to recharge for at least 8
hours. If the problem persists after recharging,
the batteries should be replaced.