Sungrow SG3KTL-EC User Manual page 76

9 Troubleshooting and Maintenance
Code of
Specification
fault
Phase-S current sampling
049
channel fault.
Phase-T current sampling
050
channel fault.
Inverter
hardware protection.
100
AC current has exceeded
the hardware limit.
Grid over-frequency.
101 Grid frequency is outside
the permissible range.
Grid under-frequency.
102 Grid frequency is outside
the permissible range.
Grid
synchronization fault.
103 The grid voltage sampling
differences between the
master and slave DSP.
Grid
synchronization fault;
104 The grid voltage sampling
differences between the
master and slave DSP.
The bus voltage exceeds
the set value of the
200
hardware.
PV1
202 exceeds the set value of
the hardware.
The PV input voltage
203
exceeds the bus voltage.
The temperature of some
300-301 components inside the
cabinet is too high
PV insulation resistance
302
fault.
66
overcurrent
voltage
frequency
or PV2 current
Troubleshooting
1. Wait a moment for inverter recovery.
2. Contact SUNGROW if the fault reoccurs.
1. Check the voltage of the grid.
2. If the grid voltage exceeds the
permissible range of inverter protective
parameters, ask utility grid company for
solution.
3. If the grid voltage is within the
permissible range, contact SUNGROW
Service Dept..
1. Wait a moment for inverter recovery.
2. Contact SUNGROW if the fault reoccurs.
1. Wait a moment for inverter recovery.
2. Contact SUNGROW if the fault reoccurs.
1. Check the functionality of the PV
connection terminal.
2. Contact SUNGROW if the fault reoccurs.
1. Check the functionality of the fans.
2. Clean the air inlet and outlet.
3. Clean air grills of outlet.
4. If the fault still exists, please contact
SUNGROW.
1. Check whether the PV connection cables
are intact.
2. Check whether the ambient humidity of
PV components is too high.
User Manual