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TROUBLESHOOTING
Table of0 Fault code
Fault
Message
code
A
A001
Input UV
A002
Bus UV
A003
Grid UV
A004
Grid OV
A005
Grid UF
A006
Grid OF
A007
Clock Fail
A009
Cmd Shut
A011
Grid Loss
A030
Lost Box
A031
BoxSPD1
A032
BoxSPD2
E
E001
Input OV
E003
Bus OV
E004
Boost Fail
E005
Grid OC
E006
E007
Riso Low
E008
IGBT drv
Instruction
Input undervoltage
Bus undervoltage
AC undervoltage
AC overvoltage
AC underfrequency
AC overfrequency
Clock alarm
Manual stutdown
The public grid
disconnects.
Box lost connection
Lighting protector1
Lighting protector2
Input overvoltage
Bus overvoltage
Voltage-boost fault
AC overcurrent
OTP
Overtemperature
Low isolation
impedance
IGBT drive protection
Fault analysis
PV1 undervoltage
PV2 undervoltage
DC input
Low voltage of the public grid
High voltage of the public grid
Low frequency of the public grid
High frequency of the public grid
Wrong setting
Stop by the operation panel or upper
PC
Check if inverter AC connection is
well
The communication is faulty
between combiner box and inverter
Lighting protector1 faulty
Lighting protector2 faulty
DC input overvoltage
Internal bus voltage
Voltage-boost fault of the inverter
Internal AC overcurrent
Internal overtemperature
Low isolation impedance of the
external port system
IGBT drive protection of the inverter
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