Sungrow SH3K6 - Page 79

User Manual 8 Troubleshooting and Maintenance
71
Code
Specification
Troubleshooting
200
Bus hardware over-voltage
fault.
The bus voltage exceeds the
protection value.
Wait 5 minutes for inverter
recovery or restart the system.
201
Bus under-voltage fault.
202
PV hardware over-current fault.
The PV1 or PV2 current
exceeds the protective value.
203
The PV input voltage exceeds
the bus voltage.
Check the functionality of the PV
connection terminals.
204
PV1 boost short-circuit fault
The inverter may be damaged.
Contact SUNGROW for a solution.
205
PV2 boost short-circuit fault
300
INV over-temperature fault.
1. Check and clean the heat sink.
2. Check whether the inverter is
installed in sunlight or the ambient
temperature of the enclosure
exceeds 45℃...60℃.
3. Restart the system.
302
PV insulation resistance fault.
1. Check whether the PV cable
connection is intact.
2. Wait for a sunny day to check
whether the system can run well.
308
Slave DSP redundant fault.
Restart the system.
309
Phase voltage sampling fault.
312
DC injection sampling fault.
315
PV1 current sampling fault.
316
PV2 current sampling fault.
317
PV1 MPPT current sampling
fault.
318
PV2 MPPT current sampling
fault.
319
System power supply failure
fault.
320
Leakage current CT self-check
fault.
321
SPI communication failure.
Communication faults between
the master DSP and the slave
DSP.
322
Master DSP communication
fault.
401...
408
Permanent faults.
409
All temperature sensors failed
fault.
Forced restart the system.
501
FRAM1 reading warning.
1. Inverter can normally be
connected to the grid.
2. Restart the system.
503...
506,
Temperature sensor warnings.