3 Appendix
User Manual
22
Fault
Code
Description
Troubleshooting
053
Auxiliary DSP detects grid
voltage exceeds set
protection value
1. Check the grid voltage.
2. If the grid voltage exceeds the permissible
range of inverter protection parameters, ask
utility grid company for solution.
3. If the grid voltage is within the permissible
range, contact Sungrow Service Dept.
054
Auxiliary DSP detects grid
frequency exceeds set
protection value
1. Check the grid frequency.
2. If the grid frequency exceeds the permissible
range of inverter protection parameters, ask
utility grid company for solution.
3. If the grid frequency is within the permissible
range, contact Sungrow Service Dept.
056
Auxiliary DSP detects
leakage current exceeds
set protectino range
1. Check whether there is a grounded fault of
the PV string.
2. If the fault occurs repeatedly, contact
Sungrow Service Dept.
057
Auxiliary DSP AC current
sampling channel
anomaly
1. Wait a moment for inverter recovery.
2. If the fault occurs repeatedly, contact
Sungrow Service Dept.
058
Auxiliary DSP detects AC
current DC injection
exceeds inverter set
protection range
1. Wait a moment for inverter recovery.
2. If the fault occurs repeatedly, contact
Sungrow Service Dept.
059
Main and auxiliary DSP
communication anomaly
1. Wait a moment for inverter recovery.
2. If the fault occurs repeatedly, contact
Sungrow Service Dept..
060
Main and auxiliary DSP
sampling difference
1. Wait a moment for inverter recovery.
2. If the fault occurs repeatedly, contact
Sungrow Service Dept.
070
Fans are defective
Stop the inverter and disconnect the AC & DC
cables. Check whether the fan duct has been
blocked. If not, replace fans.
074
Communication fault of
LCD
1. Check whether communication cable of the
eShow is firmly connected.
2. If the communication cable is firmly
connected, a fault has occurred in the internal
communication of the inverter. However, the
inverter continues feeding into the grid.
Contact Sungrow Service Dept.
087
Arc self-detection
anomaly warn
Wait a while. Contact Sungrow if device is still
in self-detection warn state.
