Omron BU100RS - Page 54

3 Check and start operation
3-4 Interpreting beeps and displays
BU100RS
53
3
28
bypass
Continuous OFF
Stopped charging due
to abnormal rise in
battery charge voltage.
When the battery
discharges, bypass
output is performed.
(The display disappears
completely.)
There is a problem with
this unit. Please apply
the repair.
29
bypass
Continuous OFF
Stopped charging due
to abnormal drop in
battery charge voltage.
When the battery
discharges, bypass
output is performed.
(The display disappears
completely.)
30
bypass
Continuous
---
(Note 2)
Moved to bypass
operation due to
problem with the
internal temperature
(Note 1).
The cause might be
high ambient
temperature of the unit.
Please check the
ambient temperature of
the UPS.
If it is over 40 degree,
please lower the
ambient temperature.
Turn OFF this unit and
all connected devices,
then turn ON for this unit
only.
If the temperature is
under 40 degree C,
there is a problem with
this unit. Please apply
the repair.
31
bypass
Continuous
---
(Note 2)
Moved to bypass
operation due to
problem with the DC
Bus voltage .(Note 1).
Refer to the No.26 and
27.
32
bypass
Continuous
---
(Note 2)
Moved to bypass
operation due to
problem with the half
wave rectification load
(Note 1) (Note 3)
33 Continuous
---
(Note 2)
External Fan Error.
Please replace the
external cooling fan.
(Reference) page 69 to
71. (note 4)
Note 1: In bypass operation, commercial power is output directly. Output stops when a power failure
(AC input OFF) occurs in bypass operation.
Note 2: The displays and operations vary according to the status.
Note 3: Devices such as dryers, some solenoid valves, etc., which have a half-wave rectifier.
Note 4: Fan replacement does not comply with UL standard.