Table 6.1 Fault Code List - Mitsubishi Electric 9900B Series Owner Technical Manual

MITSUBISHI
ELECTRIC

Table 6.1 Fault Code List

Code
Status
indication
message
(Note 3)
AC INPUT
UA801 VOLTAGE OUT
OF RANGE
AC INPUT
FREQUENCY
UA802
OUT OF
RANGE
AC INPUT
PHASE
UA803
ROTATION
ERROR
CONVERTER
UA804 OPE.
PROHIBITION
INVERTER
UA805
OVERLOAD
INVERTER
UA806
OVERLOAD
INVERTER
UA807
OVERLOAD
INVERTER
UA808
OVERLOAD
INVERTER
UA810
OVERLOAD
BYPASS
UA812 VOLTAGE OUT
OF RANGE
BYPASS
PHASE
UA813
ROTATION
ERROR
BYPASS
FREQUENCY
UA814
OUT OF
RANGE
TRANSFER
UA815
PROHIBITION
EMERGENCY
UA817 STOP
ACTIVATED
TRANSFER
UA821
PROHIBITION
9900B SERIES UPS
OWNERS / TECHNICAL MANUAL
Meaning
Input line voltage is out of the
specific range.
Input line frequency is out of
the specified range.
Input line power conductors
are not wired in a proper
phase sequence.
The converter interlock is
active.
The output load current has
exceeded 105% of the rated
current.
The output load current has
exceeded 110% of the rated
current.
The output load current has
exceeded 125% of the rated
current.
The output load current has
exceeded 150% of the rated
current.
Short time over-current has
exceeded 150% of the rated
current
Bypass line voltage is out of
the specific range.
Bypass line power conductors
are not wired in a proper
phase sequence.
Bypass line frequency is out of
the specific range.
Transfer to bypass is not
available due to bypass
abnormality.
The emergency stop was
activated by the EPO switch or
an external contact.
The UPS cannot transfer to
the bypass because the
inverter output is not
synchronized to the bypass.
MITSUBISHI ELECTRIC 9900B SERIES UPS
Guidance Buzzer
CHECK
INPUT Intermittent
POWER sound
SOURCE
CHECK
INPUT Intermittent
POWER sound
SOURCE
CHECK
INPUT Intermittent
POWER sound
SOURCE
Intermittent
-
sound
WARNING:
Intermittent
DECREASE
sound
LOAD
WARNING:
Intermittent
DECREASE
sound
LOAD
WARNING:
Intermittent
DECREASE
sound
LOAD
WARNING:
Intermittent
DECREASE
sound
LOAD
WARNING:
Intermittent
DECREASE
sound
LOAD
CHECK
BYPASS Intermittent
INPUT sound
CHECK
BYPASS Intermittent
INPUT sound
CHECK
BYPASS Intermittent
INPUT sound
Intermittent
-
sound
- -
- -
Page Number:
6-2
External Failure
relay contact lamp
(Note 1) (Note 2)
Alarm
AC input -
abnormal
Alarm
AC input -
abnormal
Alarm
AC input -
abnormal
Alarm -
Alarm
-
Overload
Alarm
-
Overload
Alarm
-
Overload
Alarm
-
Overload
Alarm
-
Overload
Alarm
Bypass
-
Input
Abnormal
Alarm
Bypass
-
Input
Abnormal
Alarm
Bypass
-
Input
Abnormal
Alarm -
Alarm -
Alarm -