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8. 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
switching.
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 continuously.
8. Troubleshooting
Perform the checks shown below if the unit is operating abnormally.
If the unit continues to operate abnormally, please contact our Electronic Systems & Equipments 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 worked and opened.
(If the black button is popped up, it is suspected that there are too many connected
devices or there is a short in connected devices.) Disconnect all of the connected
devices, push in the AC Input Overcurrent Protection Black 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 a beep and display" on page 30.)
3. Isn't the voltage of the wall outlet (commercial power) too low?
Stop devices that consume a lot of power such as an air conditioner. Check the UPS, for
example, by connect it to a wall outlet (commercial power) in another room or house.
(It does not operate when the voltage is less than 90V.)
Isn't charging insufficient?
Perform the test after charging the battery for at least 12 hours.
You can charge the battery by connecting the AC input plug of the UPS to a wall outlet
(commercial power).)
1. The input power supply may be at fault. Connect the UPS to a wall outlet (commercial
power) in another room or, if possible, another house and check it. Or, stop large devices
such as a cooler.
2. Is a page printer (laser printer, etc.) connected?
Because large current flows instantaneously in printers, normal backup is not possible.
1. The UPS generates some noise when performing backup. For displays susceptible to
noise, distortion or white lines may occur, but the UPS is not at fault.
2. Grounding the UPS, computer, and display may improve this problem.
The battery is judged to be dead in the auto battery test or the self-diagnostic test.
Battery Mode cannot be performed and therefore replace the battery pack.
There are too many connected devices. There are too many connected devices. Reduce
the number of connected devices until “
” is displayed on the status indicator.
The UPS stopped because too many devices were connected for 3 minutes or more, or
because 120% was exceeded.
Turn OFF all power to the unit and connected devices, and reduce the number of connected
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
