5.2. Fault Code
Fault code
Fault event
01
Bus start failure
02
Bus over
03
Bus under
04
Bus unbalance
06
Converter over
current
11
Inverter soft start
failure
12
High inverter
voltage
15
Inverter B
output(line to
neutral) short
circuited
16
Inverter C
output(line to
neutral) short
circuited
17
Inverter A-B
output (line to
line) short
circuited
18
Inverter B-C
output (line to
line) short
circuited
19
Inverter C-A
output (line to
line) short
circuited
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Fault code
None
42
None
43
None
46
None
47
None
48
None
60
None
61
None
62
None
63
None
64
None
65
None
66
PH 9283 - PH 9284 .
Fault event
DSP communication
failure
Overload
Incorrect UPS
setting
MCU communication
failure
Two DSP firmware
versions are
incompatible in
parallel system.
Bypass phase short
circuited
Bypass SCR short
circuited
Bypass SCR open
circuited
Voltage waveform
abnormal in A phase
Voltage waveform
abnormal in B phase
Voltage waveform
abnormal in C phase
Inverter current
detect abnormal
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None
None
None
None
None
None
None
None
None
None
None
None
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