Troubleshooting - Omron S8BA-24D24D120LF User Manual

8 Troubleshooting

8 Troubleshooting
Perform the checks shown below if the unit is operating abnormally.
Problem
The unit does not start
operation.
The LED does not appear
when the AC input is
connected to commercial
power and the "Power" switch
is turned 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 power is not turned ON
even when the "Power" switch
is pressed.
The battery replacement alert
" " is displayed.
The UPS life alert " " is
displayed.
The status indicator shows
" , and the beeper sounds
at 0.5-second intervals.
The status indicator blinks
" , and the beeper sounds
continuously.
90
Make sure the AC input is securely connected to commercial power.
If the status indicator does not display properly after you perform the above operation, there is a
problem with the unit.
See "4-3 Interpreting beeps and displays".
The battery may not be fully charged.
Perform the test after charging the battery for at least 4hours.
The battery can be charged just by connecting the AC input to a wall outlet.
The "Power" switch can be either ON or OFF.
When input power supply is connected to the unit and the power is turned ON, battery charging
operation starts.
When the "Power" switch is turned OFF, the battery charging operation does not start.
Variations (decrease) in the input power occur frequently. Or, noise may be included that
significantly distorts the voltage waveform of the input power.
▪Try and check what happens when connecting the unit to a different wall outlet (commercial
power) located some distance away from the device consuming a large amount of power.
▪This problem may occur also when you connect many devices to a plug strip or extension cord
connected to the UPS if it is a long or thin cable.
If the status indicator displays "
▪ Battery replacement alert "
self-diagnosis test. Backup operation lasts only for a short period of time. Replace the battery.
See "5-1 Checking the battery".
▪Battery replacement alert "
The battery has been used up to its end-of-life. Replace the battery.
See "5-2-1 Notification that the battery needs to be replaced".
The UPS has been used up to its end-of-life. Replace the UPS with a new one as soon as
possible.
There are too many connected devices. Reduce the number of connected devices until "
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 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
" or " ", check the voltage of the input power supply.
" blinks: The battery is judged to be deteriorated in the
" turned ON: The battery life counter has counted up to the limit.
is
S8BA-24D24D□□□LF