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G9000 Installation and Operation Manual 77
Failure Code List
Table 6.1 Fault Code
Note 3
Note 1
Note 2
Code
indication
Status message Meaning Guidance Buzzer
External
relay contact
Failure
lamp
UA801
AC INPUT VOLTAGE
OUT OF RANGE
Input line voltage is out of the specified
range.
CHECK INPUT
POWER
SOURCE
Intermittent
sound
Alarm
AC input
abnormal
－
UA802
AC INPUT
FREQUENCY OUT
OF RANGE
Input line frequency is out of the specified
range.
CHECK INPUT
POWER
SOURCE
Intermittent
sound
Alarm
AC input
abnormal
－
UA803
AC INPUT PHASE
ROTATION ERROR
Input line power conductors are not wired in
a proper phase sequence.
CHECK INPUT
POWER
SOURCE
Intermittent
sound
Alarm
AC input
abnormal
－
UA804
CONVERTER OPE.
PROHIBITED
The converter interlock is active. －
Intermittent
sound
Alarm －
UA805
INVERTER
OVERLOAD
The output load current has exceeded 105%
of the rated current.
WARNING :
DECREASE
LOAD
Intermittent
sound
Alarm
Overload
－
UA806
INVERTER
OVERLOAD
The output load current has exceeded 110%
of the rated current.
WARNING :
DECREASE
LOAD
Intermittent
sound
Alarm
Overload
－
UA807
INVERTER
OVERLOAD
The output load current has exceeded 125%
of the rated current.
WARNING :
DECREASE
LOAD
Intermittent
sound
Alarm
Overload
－
UA808
INVERTER
OVERLOAD
The output load current has exceeded 150%
of the rated current.
WARNING :
DECREASE
LOAD
Intermittent
sound
Alarm
Overload
－
UA810
INVERTER
OVERLOAD
Short time over-current has been detected
during the inverter operation.
WARNING :
DECREASE
LOAD
Intermittent
sound
Alarm
Overload
－
UA812
BYPASS VOLTAGE
OUT OF RANGE
Bypass line voltage is out of the specified
range.
CHECK BYPASS
INPUT
Intermittent
sound
Alarm
Bypass input
abnormal
－
UA813
BYPASS PHASE
ROTATION ERROR
Bypass line power conductors are not wired
in a proper phase sequence.
CHECK BYPASS
INPUT
Intermittent
sound
Alarm
Bypass input
abnormal
－
UA814
BYPASS
FREQUENCY OUT
OF RANGE
Bypass line frequency is out of the specified
range.
CHECK BYPASS
INPUT
Intermittent
sound
Alarm
Bypass input
abnormal
－
UA815
TRANSFER
PROHIBITED
Transfer to the bypass is not available due to
bypass abnormality.
－
Intermittent
sound
Alarm －
UA817
EMERGENCY STOP
ACTIVATED
The emergency stop was activated by the
EPO switch or an external contact.
－ － Alarm －
UA821
TRANSFER
PROHIBITED
The UPS could not transfer to the bypass
because the inverter output was not
synchronized to the bypass.
－ － Alarm －
UA822
TRANSFER
PROHIBITED
The UPS could not transfer to the bypass
because external “generator operation”
signal indicates a backup generator is in
operation.
－ － Alarm －