MITSUBISHI ELECTRIC 9900CX SERIES UPS
9900CX SERIES UPS
OWNERS / TECHNICAL MANUAL
Page Number:
6-4
Table 6.1
Bypass Module Fault Code List
Code
indication
(Note 2)
Status
Message
Meaning
Guidance
Audible
Alarm
External
relay
contact
(Note 1)
UF305 CTRL.CIRCUIT
ERR.
Detection of an abnormal clock
speed in the CPU or FPGA.
CALL
SERVICE
ENGINEER
Continuous
sound
Major
UF306 CTRL.CIRCUIT
ERR.
Control power supply voltage is
below the specified level.
CALL
SERVICE
ENGINEER
Continuous
sound
Major
UF320 CTRL.CIRCUIT
ERR.
Cable disconnection in the
parallel interface board during
load supply (SMS).
CALL
SERVICE
ENGINEER
Continuous
sound
Major
UF321 CTRL.CIRCUIT
ERR.
Cable disconnection in the
parallel interface board during
load supply (Individual Bypass
System).
CALL
SERVICE
ENGINEER
Continuous
sound
Major
UF322 CTRL.CIRCUIT
ERR.
Major communication error
during parallel operation (
Δ
I).
CALL
SERVICE
ENGINEER
Continuous
sound
Major
UF323 CTRL.CIRCUIT
ERR.
Major communication error
during parallel operation (CAN).
CALL
SERVICE
ENGINEER
Continuous
sound
Major
UF324 CTRL.CIRCUIT
ERR.
Major communication error in
both of the CAN signals during
certain period.
CALL
SERVICE
ENGINEER
Continuous
sound
Major
UF325 CTRL.CIRCUIT
ERR.
Major communication error by
fall-out of both of dual
connectors.
CALL
SERVICE
ENGINEER
Continuous
sound
Major
UF326 CTRL.CIRCUIT
ERR.
Communication integrity error or
No communication (SMS).
CALL
SERVICE
ENGINEER
Intermittent
sound
Minor
UF327 CTRL.CIRCUIT
ERR.
Communication integrity error or
No communication (Individual
Bypass).
CALL
SERVICE
ENGINEER
Intermittent
sound
Minor
UF340
MODULE MINOR
FAULT
A power converter module has
detected major fault condition.
CALL
SERVICE
ENGINEER
Continuous
sound
Major
UF341 #1
MAJOR
FAULT
Power converter module #1 has
detected major fault condition.
CALL
SERVICE
ENGINEER
Intermittent
sound
Minor
UF342 #2
MAJOR
FAULT
Power converter module #2 has
detected major fault condition.
CALL
SERVICE
ENGINEER
Intermittent
sound
Minor
UF343 #3
MAJOR
FAULT
Power converter module #3 has
detected major fault condition.
CALL
SERVICE
ENGINEER
Intermittent
sound
Minor
UF344 #4
MAJOR
FAULT
Power converter module #4 has
detected major fault condition.
CALL
SERVICE
ENGINEER
Intermittent
sound
Minor
UF345 #5
MAJOR
FAULT
Power converter module #5 has
detected major fault condition.
CALL
SERVICE
ENGINEER
Intermittent
sound
Minor
UF346 #6
MAJOR
FAULT
Power converter module #6 has
detected major fault condition.
CALL
SERVICE
ENGINEER
Intermittent
sound
Minor
UF349
MODULE MAJOR
FAULT
All Power converter modules
have detected major fault
condition.
CALL
SERVICE
ENGINEER
Continuous
sound
Major
UF371 CTRL.CIRCUIT
ERR.
Major communication error in
either of the CAN signals during
certain period.
CALL
SERVICE
ENGINEER
Intermittent
sound
Minor
UF372 CTRL.CIRCUIT
ERR.
Unable to synchronize the
inverter output and the bypass
voltage.
CALL
SERVICE
ENGINEER
Intermittent
sound
Minor
UF374 CTRL.CIRCUIT
ERR.
Cable disconnection in the
parallel interface board.
CALL
SERVICE
ENGINEER
Intermittent
sound
Minor
UF375 CTRL.CIRCUIT
ERR.
Unable to achieve
synchronization for parallel
operation.
CALL
SERVICE
ENGINEER
Intermittent
sound
Minor
Summary of Contents for 9900C Series
Page 2: ...Preface Revision A 04 04 2017 4GBA0114 ...
Page 61: ......