Sungrow SH5K - Communication and Over-current Faults

User Manual 8 Troubleshooting and Maintenance
65
Code Specification Troubleshooting
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.
3. 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,
511
Temperature sensor warnings.
507 Error alarm of DO power settings.
Modify the DO control power
according to the load power. Refer
to “Optimized Control”.
509 Clock reset fault.
Manually reset the clock or
synchronize the clock with the
network time. This will clear the
fault.