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. Troubleshooting
Perform the checks shown below if the unit is operating abnormally.
If the unit continues to operate abnormally, please contact our Electronic System & Eqiuipment customer
support center at _____.
Problem
1. Check that the AC Input Plug is connected to the commercial power securely.
2. The AC Input Overcurrent Protection is working.
(If the black button has popped up, there are probably too many connected de-
vices or there is a short in the connected devices.) Disconnect all of the connected
devices, push in the the black AC input overcurrent protection button and turn ON
the Power Switch of the UPS again. If the status indicator does not display normally,
there is a problem with the UPS. (See "Interpreting beeps and displays" on page 20.)
Is charging insuffi cient?
Perform the test after charging the battery for at least 8 hours.
(You can charge the battery by connecting the AC input plug of the UPS to a wall outlet
(commercial power).)
Variations (decrease) in the input power occur frequently. Or, noise is included that sig-
nifi cantly distorts the voltage waveform of the input power.
●
Change the wall outlet (commercial power) to which you connect the UPS. Try con-
necting to a wall outlet (commercial power) away from equipment that consumes
large power.
●
This problem may occur also when you connect many devices to a plug strip or ex-
tension cord connected to the UPS if it is a long or thin cable.
The probable cause is noise that occurs inside the UPS.
●
Ground all devices connected to the UPS. Connect them to a wall outlet (commercial
power) for 3-pin plugs or connect their Grounding Terminal to the Grounding Terminal
of a wall outlet.
●
This problem may occur when power cords are long or placed closely or when the
UPS and devices to be backed up are placed closely. Rearrange them.
●
If the UPS or devices connected to the UPS are contained in a metal rack, attempt to
ground the rack itself.
The auto battery test or self-diagnostic test determined that the battery is dead. Battery
Mode cannot be performed, so the battery pack needs to be replaced.
There are too many connected devices. Reduce the number of connected devices until
“
” is displayed on the status indicator.
Output stopped due to exceeded connection capacity.
Turn OFF all power to the unit and connected devices, and reduce the number of con-
nected devices. Then, turn the power to the unit and connected devices back ON and
check whether "
" is displayed on the status indicator.
Check and remedy
Troubleshooting
UPS does not operate.
The LED display does not light
up, even though the AC input
plug is connected to a wall
outlet (commercial power) and
the power switch is ON.
Backup is not possible.
The computer stops when a
power failure occurs.
Backup is performed too
frequently.
Frequent switching is
performed although a power
failure does not occur.
You hear the sound of switch-
ing.
The display is abnormal.
●
The display is unstable.
●
White lines occur.
●
Noise increases.
The battery replacement lamp
blinks and the beeper sounds
at 2-second intervals.
The status indicator shows “
”, and the beeper sounds at
0.5-second intervals.
The status indicator blinks “
”, and the beeper sounds con-
tinuously.
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