Learn about Growatt Error Code 129, its meaning, causes, and solutions for DC injection issues.
Error Code 129 indicates that the DC injection level is too high, which can affect system performance. It is crucial to address this issue to ensure safe operation.
To troubleshoot DC injection issues, check the inverter settings and ensure proper grounding. Additionally, inspect the wiring for any faults or damage that may cause excessive DC injection.
Error 129 signifies that the inverter has detected excessively high DC injection, which can occur when the voltage from the solar array exceeds the inverter's maximum input ratings. This condition can trigger the inverter's internal safety protocols, such as overvoltage protection mechanisms. The inverter continuously monitors the insulation resistance (RISO) and current flow, and any anomalies may indicate potential ground faults or excessive leakage currents which necessitate immediate action to prevent damage to the system or hazards to personnel.
Upon encountering Error 129, users may notice the inverter's LED indicators flashing in a specific pattern, often accompanied by alerts on the monitoring app indicating a fault condition. There may also be a significant drop in energy production, as the inverter may enter a protective shutdown state to prevent damage.
Always consult a licensed electrician or certified solar installer when troubleshooting electrical issues. Working with solar power systems involves inherent risks, and licensed technician assistance is crucial to ensure safety and compliance with local codes.
To avoid encountering Error 129 in the future, regularly perform maintenance checks on the solar array, including visual inspections and electrical testing. Ensure that all components are rated for the system’s operating conditions and that the inverter settings are properly configured. Keep an eye on environmental conditions that may affect system performance, such as shading or temperature extremes.