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8. Troubleshooting
Problem
The UPS does not operates.
Although you connect the
100 VAC Input Plug of the
UPS to a wall outlet
(commercial power) and turn
on the Power Switch, the
Power Supply Output Lamp
(green) does not go 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 Alarm Lamp blinks at
intervals of 2 second.
The Alarm Lamp blinks at
intervals of 0.5 second.
The Alarm Lamp is turned
on.
The output voltage is only
approximately 80 V when
measuring it with a tester.
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 normal operation display does not go on, the UPS
is at fault. (See "Interpreting a beep and display" on page 20.)
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 90 V.)
Isn't charging insufficient?
Perform the test after charging the battery for at least 12 hours.
You can charge the battery by connecting the 100 VAC 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. Isn't a page printer 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.
3. Noise during backup may become larger depending on connected devices, you can
continue to use the UPS because this occurs due to rectangular wave output.
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. Decrease the number of connected devices until
this lamp goes out and then use the UPS.
Because the status in which too many devices are connected lasted 3 minutes or longer or
120% was exceeded, the UPS stopped immediately.
When you turn on the Power Switch of the UPS again, if the Alarm Lamp blinks at intervals
of 0.5 second, decrease the number of connected devices and then use the UPS.
If the Alarm Lamp blinks again, the circuit is at fault. The UPS needs repair. Please contact
us; ____
The UPS outputs a special rectangular wave during the Batter Mode. Due to its
characteristics, simple testers indicates approximately 80 V. The UPS is not at fault. To
make correct measurement, you need a voltmeter that can measure "true rms value."
Check and remedy
35
8. Troubleshooting
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