Omron BN100T, Instruction Manual, Page: 93 / 110

Note 1: In bypass operation, commercial power is output directly.
Output stops when a power failure (AC input OFF) occurs in bypass operation.
If 100% of rated capacity is exceeded under commercial operations,
the bypass operation starts in 5 minutes. If 115% is exceeded, the operation
immediately stops. If 105% of rated capacity is exceeded under backup operations,
the output stops in 30 seconds. If 125% is exceeded, the output immediately stops.
Note 2: Maximum 2-types message may be displayed by turns on the LCD.
8 Troubleshooting
BN50T/BN75T/BN100T/BN150T/BN220T/BN300T
8
8-3
8 Troubleshooting
BN50T/BN75T/BN100T/BN150T/BN220T/BN300T
8-2
Problem Beep Output Charging Message on
LCD Display
(Note 2)
Cause Solution
· The UPS
power
does not turn
on
· The UPS
does not
output power
to the
secondary
(connected
devices) side
· Power switch
does
not work
None OFF ON AC I/P
abnormal-VH
AC input voltage
or AC input
frequency are too
low or too high.
Check the voltage and
frequency of the input power
supply.
AC I/P
abnormal-VL
AC I/P
abnormal-FH
AC I/P
abnormal-FL
None OFF ON Standby by
Remote OFF
Remote ON/OFF
Signal is ON, or
the "Remote ON/
OFF Logic" is set
to "OFF at Open"
in the menu on the
LCD.
Refer to "6. Using the contact
signal functions".
·Backup is not
possible
·Connected
devices stop
when a power
failure occurs
None ON ON Battery empty The battery charge
is insufficient.
Connect the UPS to a
commercial power and charge
the battery for at least 4 hours.
Intermittence
of 2 s
ON ON Battery weak
(“Battery
replacement”
LED is lit.)
Battery life
The battery test
detected a weak
battery.
Hold down the [ESC] switch
at least 0.5 seconds until the
beeper stops. Replace the
battery. You can replace the
weak battery with a separately
purchased replacement
battery as needed.
Reset the battery life counter
after replacing the battery.
The fan makes
loud noises
(The fan
rotates faster)
None --- --- --- The fan operates
in High-speed
Mode under
the following
conditions:
1) during the
Battery Mode
2) during AVR
(automatic voltage
regulation)
operation
3) during charging
the battery (when
the battery level is
0 to 95%)
Wait until all the High-speed
Mode conditions be non-
effective.
·The UPS
makes click
noises
·The UPS
makes click
noises even
though there
is no power
failure
None ON ON AVR mode Variations
(decrease) in
the input power
occur frequent-
ly. Or, noise
may be included
that significantly
distorts the voltage
waveform of the
input power.
Check the installation
conditions of the UPS with the
following points:
·if the UPS is connected to the
thin extension cables,
·if the UPS is connected to
the same commercial power
supply with a large power-
consuming device, and other
points.