6 Troubleshooting
32
LED
No
.
RUN
(green)
AL ARM
(orange)
OVER
LOAD
(orange)
BYPASS
(orange)
BATTERY
CONDITION
(green/
orange)
Warning
beep
Operational
status
Remarks
4
Lighting
Lighting
(1)
Bypass
operation due
to UPS
failure
The UPS became the failure state
and switched to the bypass operation.
Evacuate important connection
device from the UPS.
In this state, even if an input power
failure occurs, the battery operation
cannot be performed.
Confirm ambient temperature and
ventilation, and press the RESET
switch on the front of the UPS for
approximately 3 seconds after
approximately 10 minutes have
passed. If there is no problem, the
UPS will return to the normal
operation (No.1). If the ALARM
LED does not go out or lights up
again, even if the above operation is
performed, contact an agent from
which you purchased the UPS, or a
maintenance company.
5
Lighting
Indication of
the amount
of battery
charge
(green)
(3)
Abnormality
in cooling fan
Abnormalities have occurred in the
cooling fan. If this state continues for
approximately 2 minutes or the
inside temperature of the UPS rises,
the UPS will become the failure state
of No.4.
6
(b)
Slow
blink
-
Manual
bypass
operation
The UPS has been switched to the
bypass operation manually. In this
state, even if an input power failure
occurs, the battery operation cannot
be performed.
7
(b)
Slow
blink
(a)
Fast
blink
(1)
Input error at
startup
Since the abnormalities have
occurred at an input power supply,
the UPS cannot be started up.
Stop the UPS once, and restart after
confirming that an input power
supply is within the range of the
following conditions.
Input voltage: 85 to 138 VAC
Input frequency: 47.5 to 52.5 Hz
or 57 to 63 Hz
8
Lighting
Lighting
Lighting
(1)
Bypass
operation due
to an output
overload
during the
normal
operation
Since the capacity of the connection
device exceeded the rated value and
the UPS became the overload state,
the UPS has switched to the bypass
operation automatically. Reduce the
capacity of the connection device to
less than the rated value of the UPS.
If the capacity of the connection
device become below the rated
value, the UPS will return to the
normal operation (No.1). In the state
of the continuation of overload, even
if pressing the RESET switch, the
warning beep does not stop.
Although it may become the
overload temporarily by inrush
current at the time of a load
injection.
Summary of Contents for M-UPS050AD1B
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