6 Troubleshooting Quick User Manual
22
Leakage current
over-current.
The leakage current
exceeds the upper
limit.
1. Check the PV strings for ground fault.
2. If the fault occurs repeatedly, contact
Sungrow Service Dept.
10-minute grid
over-voltage.
The average grid
voltage exceeds the
permissible range for
over 10 minutes.
1. Check whether the inverter selected
country code is the country you are in.
2. Wait a moment for inverter recovery.
3. Check the voltage of the grid. If the grid
voltage exceeds the permissible range of
inverter protection parameters, ask utility
grid company for solution.
4. If the fault occurs repeatedly, contact
Sungrow Service Dept.
The grid voltage
exceeds the protective
value, which is higher
than the protective
value of error 002.
1. Check the model of the AC cables.
2. Wait a moment for inverter recovery.
3. If the grid voltage exceeds the
permissible range, ask utility grid company
for solution.
4. If the fault occurs repeatedly, contact
Sungrow Service Dept.
The bus voltage or
power is high.
1. Wait a moment for inverter recovery.
2. If the fault occurs repeatedly, contact
Sungrow Service Dept.
Bus transient
over-voltage.
The transient bus
voltage exceeds the
protective value.
1. Wait a moment for inverter recovery.
2. If the fault occurs repeatedly, contact
Sungrow Service Dept.
The bus voltage
exceeds the protective
value.
1. Wait a moment for inverter recovery.
2. If the fault occurs repeatedly, contact
Sungrow Service Dept.
Check the layout and the wiring of PV1
input.
Check the layout and the wiring of PV2
input.
Check the cable connections of PV1.
Check the cable connections of PV2.
The temperature of
radiator is too high.
1. Check whether the ambient temperature
shown on the screen is too high. Wait a