3 Checking and starting the operation
3-1 Names and functions of each part of the operation and display sections
BU5002R/BU3002R/BU3002RH
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3
Text
displayed
on top
Failure details
Solution
Fault-E6 Abnormal internal temperature
Due to an abnormal internal temperature, the
UPS shifts to bypass operation when in normal
operation, and stops outputting power when in
backup operation. (Note 1)
Check that the ambient temperature of the UPS
is 40°C or less. If it is not used in a high
temperature environment, the UPS is faulty.
Contact the shop of purchase.
Fault-E7 Bus capacitor fault
A breakdown of an internal component or internal
circuit has been detected. The UPS shifts to
bypass operation when in normal operation, and
stops outputting power when in backup operation.
If in backup operation, output will stop.
The UPS is faulty, so contact the shop of
purchase.
Fault-E8 FAN fault
Due to a fault in the front suction fan or rear
cooling fan, the UPS shifts to bypass operation
when in normal operation, and stops outputting
power when in backup operation. (Note 1)
Check that there is nothing obstructing rotation
of the fan. If the rear fan is not rotating, replace
the fan. If the front fan is not rotating, the UPS is
faulty. Contact the shop of purchase.
Fault-E9 Overload fault
The load of the connected device is exceeding
the rated capacity. The UPS shifts to bypass
operation when this status continues for 5
seconds while the UPS is in normal operation.
The UPS stops outputting power when this
status continues for 30 seconds while the UPS
is in backup operation.
Turn off the power switches of the UPS and all
the devices connected to the UPS, and after
reducing the connected devices, turn on the
power switches of the UPS and the connected
devices.
Fault-E10 Battery fault
Either battery deterioration, end of battery life, or
battery disconnection have been detected.
If “Connect Battery” is displayed at the bottom of
the LCD, check whether the battery is properly
connected. If the displayed message is different,
or if the battery is properly connected, replace
the battery.
Fault-E12 Battery temperature fault
An abnormal battery temperature was detected.
The UPS shifts to bypass operation when in
normal operation, and stops outputting power
when in backup operation.
Wait until the battery temperature drops. When it
returns to the normal temperature, the UPS will
return to the normal operation state. If the status
does not recover, the UPS is faulty, so contact
the shop of purchase.
Fault-E13 UPS life
The life of the product has expired.
Replace the UPS.
Fault-E17 Charging system failure
A failure occurred on the battery charging
system.
The UPS shifts to bypass operation when in
normal operation.
(This fault is not detected during backup
operation.)
Turn ON only the power switch again. If the
displayed content does not change, the UPS is
faulty. Contact the shop of purchase.
Fault-E20 Internal circuit fault
A breakdown of an internal component or
internal circuit has been detected.
The symptoms when this fault occurs vary
depending on the cause, so check the methods
of resolution on the right.
Operation continues but the UPS is faulty.
Contact the shop of purchase.
Bypass
mode
Outputting in bypass mode
Indicates that the UPS is in commercial power
bypass operation to continue the output after
failure or overload has occurred.
Messages about the occurring fault and about
the bypass mode are displayed alternately.
Since messages vary depending on which
condition caused the UPS to switch to bypass
mode, refer to the solution of the indicated fault.
Note 1: Commercial power is directly supplied during bypass mode.
If the UPS cannot switch to the bypass mode, or if a power outage has occurred while
in bypass operation (AC input OFF), the LCD may display 2 types of message at
maximum.
