See also
“6-3 Replacing the fan”
(Note 2)
Switched to bypass operation
due to problem with external
cooling fan (Note 1).
Failure occurred. When the beep
stop switch is pressed, the details
of the error are displayed
(No. 25 to 30).
Turn OFF this unit and all connected
devices. Then, turn the power switch
back ON for this unit only. If the display
does not change, there is a problem
with this unit. Contact the shop of
purchase or our Electronic Systems &
Equipments customer support center
at: _____
(Same as above.)
Moved to bypass operation due
to the direct current bus voltage
error (Note 1).
4. Displays and beeps when there is an equipment failure
(1) When power switch is ON
ON
or
discharging
ON
or
discharging
ON
or
discharging
18
19
20
ON
or
discharging
21
22
OFF
(Note 3)
_ _
(Note 3)
_ _
_ _
_ _
23
25
_ _
26
_ _
29
_ _
30
28
OFF
OFF
27
24
( indicates blinking)
( indicates the display is ON)
( indicates the display is OFF)
Stopped charging due to
abnormal drop in battery
charge voltage. When the
battery discharges, bypass
output is performed.
(The display disappears
completely.)
No.
Status
indicator
Power supply
output
lamp
Beep Charging Description Solution
Bypass
operation
lamp
Battery
replacement
lamp
Switched to bypass operation
due to abnormal rise in output
voltage. (Note 1).
Displays the details of the error that
occurred only while pressing the beep
stop switch while in state No. 24.
Displays the details of the error that
occurred only while pressing the beep
stop switch while in state No. 23.
Displays the details of the error that
occurred only while pressing the beep
stop switch while in state No. 24.
Switched to bypass operation
due to abnormal drop in output
voltage. (Note 1).
(Same as above.)
(Same as above.)
Moved to bypass operation due
to problem with the internal
temperature (Note 1).
Intermittent
0.5-second
intervals
Intermittent
0.5-second
intervals
Continuous
Continuous
Continuous
Continuous
There are too many connected
devices and the rated capacity is
exceeded. If this state continues
for as long as or longer than the
times described below,
commercial power continues
to be supplied through bypass
operation (Note 1).
%
When connection capacity is
at 110% or higher: Bypass
operation begins after 10 seconds
%
When connection capacity is
at 130% or higher: Output stops
after 1 minute (Go to No.20)
%
When connection capacity is
at 150% or higher: Output stops
after 10 seconds (Go to No.20)
Reduce the number of connected
devices until the display appears
as in status No. 3.
Turn OFF the power switches of
all devices connected to the unit,
reduce the number of connected
devices, and turn the power switch
back ON again.
Output stopped due to exceeded
connection capacity.
Continuous
Continuous
Continuous
Continuous
Continuous
Continuous
Continuous
Stopped charging due to
abnormal rise in battery
charge voltage. When the
battery discharges, bypass
output is performed.
(The display disappears
completely.)
Check that the connection
capacity has not exceeded
the rated capacity.
Replace the cooling fan if it does
not function properly.
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: Fan replacement performed by the user does not comply with UL, CE standards.
Note 3: The displays and operations vary according to the status.
Blinking
Blinking
Blinking
Check that the AC input of connected
devices is not short-circuited, or that
the connection capacity does not
exceed the rated capacity.
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