4. Operation
4.9 Fault Codes - When
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
Inverter R output (line to neutral) short
14
circuited
Inverter S output (line to neutral) short
15
circuited
Inverter T output (line to neutral) short
16
circuited
Inverter R-S output (line to line) short
17
circuited
Inverter S-T output (line to line) short
18
circuited
Inverter T-R output (line to line) short
19
circuited
1A
Inverter A negative power fault
1B
Inverter B negative power fault
1C
Inverter C negative power fault
21
Battery SCR short circuited
23
Inverter relay open circuited
24
Inverter relay short circuited
25
Line wiring fault
31
Parallel communication failure
32
Host signal failure
33
Synchronous signal failure
34
Synchronous trigger signal failure
35
Parallel communication loss
36
Parallel output current unbalance
41
Over temperature
Icon is Solid (Not Flashing)
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Fault Code
Fault Event
42
DSP communication failure
43
Overload
46
Incorrect UPS setting
47
MCU communication failure
Two DSP firmware versions are
48
incompatible in parallel system
60
Bypass phase short circuited
61
Bypass SCR short circuited
62
Bypass SCR open circuited
63
Voltage waveform abnormal in R phase
64
Voltage waveform abnormal in S phase
65
Voltage waveform abnormal in T phase
66
Inverter current sample abnormal
67
Bypass O/P short circuited
68
Bypass O/P line to line short circuited
69
Inverter SCR short circuited
6C
BUS voltage drops too fast
6D
Current sampling error value
6E
SPS power error
6F
Battery polarity reverse
71
PFC IGBT over-current in R phase
72
PFC IGBT over-current in S phase
73
PFC IGBT over-current in T phase
74
INV IGBT over-current in R phase
75
INV IGBT over-current in S phase
76
INV IGBT over-current in T phase
44
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