Maintenance&Trouble Shooting
22
Storage device fault
low start up power under low light
conditons, inverter self-check procedure
cannot be complete
The inverter will restart automatically when the start up power is enough
Ground Fault Circuit Interrupter
fault
1.ground leakage current high
2.PV(+) or PV(-) earthed
1. check the AC output wring and restart
the inverter
2. check PV array wiring
Grid Frequency fault
1. grid fluctuate
2. grid
frequency out of setting range
1. grid back to the normal, the inverter will restart automatically
2. check inverter frequency setting range correct
3. check the AC output wiring well connected
Grid voltage fault
1. grid fluctuate
2. grid voltage unbalance between phase
to phase
1. grid back to the normal, the inverter will restart automatically
2. check each phase's voltage via inverter LCD
Internal faul
t B
Bus voltage out of range
1. check PV input voltage (not bigger than
900Vdc per channel)
2. check the AC output wiring well connected
Internal fault D Software over current fault
1. check PV array confirguration is correct
2. fluctuate on grid, wait for the grid back to the normal, the inverter
will
restart
automatically
Error Display Error Message Possible Fault Correctie Measure
EepromErr
GFCI.Err
GridF.Ou
tLim
GridV.OutLim
IntFaultB
IntFaultD
Trouble-Shooting List
Internal fault E Over current fault grid back to the normal, the inverter will restart automatically
Internal fault G DCI high
1.check each PV array's confirguration is correct
2.check the voltage difference between BUS+ and BUS- is too high
Internal fault K Bus voltage fault
1.check the AC output wring well connect.Use stranded copper cable
2.check PV array confirguration is correct
3.check the voltage diff
erence between BUS+ and BUS- is too high
IntFaultE
IntFaultG
IntFaultK
Internal fault M Bus voltage fault
1.check the AC output wring well connect.Use stranded copper cable
2.check PV array confirguration is correct
3.check the voltage difference between BUS+ and BUS- is too high
IntFaultM
Internal fault N Hardware fault
check the AC out put wring well connect.Use stranded copper
cable
IntFaultN
Internal protection A Bias current protection
1. turn off AC, then DC circuit breaker, restart the inverter
2. replace the control board
IntProtectA
Internal protection B Relay fault turn off AC, then DC circuit breaker, restart the inverter
IntProtectB
Internal protection C Inverter current protection
turn off AC, then DC circuit breaker, restart the inverter, check the
each
phases'
AC voltage is correct through LCD
IntProtectC
Internal protection D Boost current protection turn off AC, then DC circuit breaker, restart the inverter
IntProtectD
Internal protection G Bus voltage protection
1.check the AC output wring well connect.Use stranded copper cable
2.check PV array confirguration is correct
3.check the voltage difference between BUS+ and BUS- is too
IntProtectG
high
Internal protection I Bus voltage protection
1.check the AC output wring well connect.Use stranded copper cable
2.check PV array confirguration is correct
3.check the voltage difference between BUS+ and BUS- is too high
IntProtectI
Internal protection K Bus over voltage protection check the AC output wring well connect.Use stranded copper cable
IntProtectK
Internal protection N Inverter over current protection
fluctuate on grid, wait for the grid back to the normal, the inverter will
restart automatically
IntProtectN
Internal protection P Frequency fault protection
frequency abnormal of grid, wait for the grid back to the normal, the
inverter will
restart automatically
IntProtectP
Internal protection Q DCI protection
1.check PV array confirguration is correct
2.check the voltage difference between BUS+ and BUS- is too high
IntProtectQ
Internal protection R DCI circuit protection
1. turn off AC, then DC
IntProtectR
circuit breaker, restart the inverter
2. replace the control board
IntProtectT
Internal protection T PV over current protection turn off AC, then DC circuit breaker, restart the inverter
IsolationErr
Insulation resistance fault Insulation resistance low
check the resistance between PV(+) and ground, PV(-) and
ground bigger than 2MΩ.
PVVoltOver
PV voltage high PV over voltage check PV array confirguration is correct
SPICommErr
SPI fault SPI communication fault check the RS485 cable is well connect
TempOver
Over temperature Over temperature
1. turn off the inverter still the temperature down to the normal. Or
install
the inverter at a well ventilated site.
2. check the heat sink and the fans is working
TempSensorErr
Temperature sensor fault Temperature sensor fault
1. turn off AC, then
DC circuit breaker, restart the inverter
2. replace the temperature sensor
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