BU
1002
SW / BU
3002
SW
89
10
Troubleshooting
10
10
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. AC input overcurrent protection is activated and power is cut.
• BU1002SW: If the black INPUT PROTECTION button pops up, there are too
many connected devices or there was a short-circuit with the connected devices.
Disconnect all the connected devices, press the black INPUT PROTECTION switch
(overcurrent protection switch), and turn on the power switch.
• BU3002SW: There may be too many devices connected or a short-circuit may have
occurred with the connected devices while the AC overcurrent protection switch
was OFF. Turn ON the AC input overcurrent protection switch on the back of the
unit and turn the power switch back ON. If the status indicator does not display
properly after you perform the above operation, there is a problem with the unit.
(See “Interpreting beeps and displays” on page 37.)
Is charging insuffi cient?
Perform the test after charging the battery for at least 8 hours. (When an additional
battery is connected, the charging time is 24 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
signifi cantly distorts the voltage waveform of the input power.
●
Change the wall outlet (commercial power) to which you connect the UPS. Try
connecting 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
extension cord connected to the UPS if it is a long or thin cable.
The unit does not start up when the input power supply voltage/frequency is abnormal.
(The status indicator displays “H-”, “-H”, “L-” or “-L”.) Check the voltage and frequency
of the input power supply.
See also
A. Specifi cations Input Allowable voltage range, frequency see Page 90
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.
1) The auto battery test or self-diagnostic test determined that the battery is dead.
2) Did the overcurrent protection switch on the rear panel of the additional battery unit
get turned OFF when connecting an additional battery unit?
If it is not ON, the auto battery test may falsely detect a deteriorated battery.
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
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
UPS does not operate.
The LED display does not
light up, even though the
AC input plug is connected
to a wall outlet (commer-
cial 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 per-
formed although a power
failure does not occur.
You hear the sound of
switching.
Does not turn ON when
power switch is pressed.
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.
