Growatt inverters, like many other solar inverters, may show error codes to indicate a variety of system difficulties or defects. Growatt inverter error codes assist users and technicians in identifying and troubleshooting inverter faults.
Please keep in mind that the particular problem codes and their implications may differ based on your Growatt inverter’s type and firmware version.
some typical error codes and their meanings
1.E002: This code often indicates a problem with a DC voltage that is either too high or too low. It might be due to issues with your solar panels, wiring, or the inverter’s DC side.
2.E031 or E032: These codes indicate a problem with the grid’s voltage or frequency. It might be that the grid voltage or frequency is outside of the permitted range, preventing the inverter from synchronizing with the grid.
3.E019: This code frequently indicates a ground fault, which might be caused by faulty grounding or wiring issues.
4.E031 or E032: These codes indicate a difficulty with communication between the inverter and the monitoring system or the grid.
5.E100: A generic problem or error state is commonly represented by this code. For more particular information, you may need to verify the inverter’s status or reference the user handbook.
6.E016: This code denotes a temperature problem, either too high or too low. It might be connected to the internal temperature of the inverter or ambient circumstances.
7.E101: This code frequently refers to grid voltage issues and may indicate a voltage that is outside the allowed range.
8.E110: This code is typically connected with an over-frequency situation, which indicates that the grid frequency is set too high.
9.E124: This error number indicates a problem with ground fault detection. It might be due to issues with the grounding system.
10.E031 or E032: These codes indicate a problem with the grid’s voltage or frequency. It might be that the grid voltage or frequency is outside of the permitted range, preventing the inverter from synchronizing with the grid.
Errors in Growattage (E)
Errors(E) codes indicate a potential failure, fault, or erroneous inverter setup or configuration. All attempts to rectify or clear an issue must be carried out by qualified people such as Fallon Solutions.
Typically, the (E) code can be cleared once the underlying cause or Error has been resolved. Some (E) codes, Error, as shown in the table below, may signal a fatal error and necessitate contacting your electrician.
| Error: 100 | 2.5 V Reference Voltage Fault | |
| Error: 101 | Communication Fault | |
| Error: 102 | Consistent fault. Data received by Master and Slave processor are different. The reason can be utility grid voltage or frequency change frequently | 1.Restart inverter. 2.If error message appears frequently or error message still exists after replacement, check utility grid. If you require help, contact Growatt. 3.If error message still exists, contact Growatt. |
| Error: 116 | EEPROM Fault | EEPROM Fault |
| Error: 117 | Relay Fault | |
| Error: 118 | Init Model Fault | |
| Error: 119 | GFCI Device Damage | |
| Error: 120 | HCT Fault | |
| Error: 121 | Communication fault. Master processor can’t receive data from Slave processor. | 1.Restart the inverter 2.If error message still exists, contact Growatt. |
| Error: 122 | Bus Voltage Fault | Bus Voltage Fault |
Conclusion
If you encounter an error code on your Growatt inverter, review the user manual or contact Growatt technical support for precise instructions on how to resolve the problem.
They can provide you guidance on how to fix the problem or recommend that you call a professional solar technician, especially if the problem is more complicated or involves the wiring or electrical components of your solar system.
