56
G9000 Installation and Operation Manual
Note 3
Note 1
Note 2
Code
indication
Status message
Meaning
Guidance
Buzzer
External
relay
contact
Failure
lamp
UF109
DC UNBALANCED
Major unbalance of the neutral point
voltage.
CALL SERVICE
ENGINEER
Continuous
sound
Major
Lit on
UF110
ZERO PHASE
OVERCURRENT
Detection of converter zero-sequence
overcurrent.
CALL SERVICE
ENGINEER
Continuous
sound
Major
Lit on
UF111
UPS CONTROL
CIRCUIT ERROR
Battery current unbalance.
CALL SERVICE
ENGINEER
Continuous
sound
Major
Lit on
UF112
DC CIRCUIT
ABNORMAL
Sudden change of the DC voltage level.
CALL SERVICE
ENGINEER
Continuouss
ound
Major
Lit on
UF119
DC GROUND
FAULT
Detection of DC ground fault UF159
exceeds 10 seconds. UPS transfers to
bypass.
CALL SERVICE
ENGINEER
Continuous
sound
Major
Lit on
UF128
CONTROL
POWER SUPPLY
ABNORMAL
Power supply voltage to IGBT driver PCB
is below the specified level.
CALL SERVICE
ENGINEER
Continuous
sound
Major
Lit on
UF151
DC VOLTAGE
ABNORMAL
24 hours after input power restoration,
batteries does not reach float voltage
level.
CALL SERVICE
ENGINEER
Intermittent
sound
Minor
Flicker
UF152
DC VOLTAGE
ABNORMAL
Unable to equalize the voltage of various
batteries after 24 hours.
CALL SERVICE
ENGINEER
Intermittent
sound
Minor
Flicker
UF154
CB2 ABNORMAL
During UVT, status signal from CB2 is
ON.
CALL SERVICE
ENGINEER
Intermittent
sound
Minor
Flicker
UF156
CHG.STOPPED(B
ATTERY
OVERTEMP.)
UF157 failure persisted for over 2 hours.
CHECK
BATTERY
Intermittent
sound
Minor
Battery
abnormal
Flicker
UF157
BATTERY
OVERTEMPERAT
URE
Detection of overtemperature at the
batteries.
CHECK
BATTERY
Intermittent
sound
Minor
Battery
abnormal
Flicker
UF158
BATTERY LIQUID
LOW
Low level of battery electrolyte solution.
CHECK
BATTERY
Intermittent
sound
Minor
Battery
abnormal
Flicker
UF159
DC GROUND
FAULT
Detection of DC ground fault. Chopper
operation is stopped.
CALL SERVICE
ENGINEER
Intermittent
sound
Minor
Flicker
UF160
UPS CONTROL
CIRCUIT ERROR
Abnormal behavior of DC current sensor.
CALL SERVICE
ENGINEER
Intermittent
sound
Minor
Flicker
UF161
CHG.STOPPED(D
C VOLT.
ABNORMAL)
UF151 failure is running for over 24 hours.
CALL SERVICE
ENGINEER
Intermittent
sound
Minor
Flicker
UF162
BATTERY
ABNORMAL
Failure detection based on battery
self-check.
CALL SERVICE
ENGINEER
Intermittent
sound
Minor
Flicker
UF163
BATTERY
VOLTAGE
ABNORMAL
Battery voltage is abnormal.
CALL SERVICE
ENGINEER
Intermittent
sound
Minor
Flicker
UF170
VDB SENSOR
ABNORMAL
Detection of a large variation of the
difference between control-only and
protection-only battery voltage.
CALL SERVICE
ENGINEER
Intermittent
sound
Minor
Flicker
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