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MITSUBISHI
ELECTRIC
9800A SERIES UPS
OWNERS / TECHNICAL MANUAL
Page Number:
6-2
MITSUBISHI ELECTRIC 9800A SERIES UPS
Failure
Code List
Table 6.1 Fault Code
Note 9 Note 1 Note 2 Note 3
Code
indication
Status message Contents Guidance Buzzer
External
send-out
contact
Failure
lamp
UF003
CONVERTER
ABNORMAL
Preliminary charge impossible
CALL SERVICE
ENGINEER
[2] Major Lit on
UF006
CONVERTER
ABNORMAL
Mixed operation (60 minutes)
CALL SERVICE
ENGINEER
[2] Major Lit on
UF055
CONVERTER
ABNORMAL
Mixed operation (1 minute)
CALL SERVICE
ENGINEER
[1] Minor Flicker
UF059
INPUT CIRCUIT
ABNORMAL
Input circuit abnormality
CALL SERVICE
ENGINEER
[1] Minor Flicker
UF102 DC OVERVOLTAGE Over voltage of DC voltage
CALL SERVICE
ENGINEER
[2] Major Lit on
UF103 DC UNDERVOLTAGE Low voltage of DC voltage
CALL SERVICE
ENGINEER
[2] Major Lit on
UF108
CHOPPER
OVERCURRENT
Chopper output overcurrent
CALL SERVICE
ENGINEER
[2] Major Lit on
UF151
DC VOLTAGE
ABNORMAL
Does not return to float voltage
after power supply is resumed
(24 hours)
CALL SERVICE
ENGINEER
[1] Minor Flicker
UF152
DC VOLTAGE
ABNORMAL
Does not return to equalizing
voltage after power supply is
resumed
CALL SERVICE
ENGINEER
[1] Minor Flicker
UF153 CB2 ABNORMAL
Battery disconnect circuit breaker
CB2 has tripped.
CALL SERVICE
ENGINEER
[1] Minor Flicker
UF156
CB2 TRIPPED(BATTERY
OVERTEMP.)
Battery temperature abnormality
(UF157) lasted a long time
(Note 5)
CHECK
BATTERY
[1] Minor Flicker
UF157
BATTERY
OVERTEMPERATURE
Battery temperature abnormality
CHECK
BATTERY
[1]
Minor
Note 4
Flicker
UF161
CB2 TRIPPED(DC VOLT.
ABNORMAL)
Does not return to float voltage
after power supply is resumed
(48 hours) (Note 5)
CALL SERVICE
ENGINEER
[1] Minor Flicker
UF162 BATTERY ABNORMAL
Battery abnormal detected by
battery self test.
CALL SERVICE
ENGINEER
[1] Minor Flicker
UF163
BATTERY VOLTAGE
ABNORMAL
Battery voltage abnormality
CALL SERVICE
ENGINEER
[1] Minor Flicker
UF165 IGBT FAULT (CHOPPER)
IGBT module (Chopper)
overcurrent
CALL SERVICE
ENGINEER
[2] Major Lit on