Learn about Sungrow Error Code 004, its meaning, causes, and solutions for grid undervoltage shutdowns.
Error Code 004 indicates a grid undervoltage condition that causes the inverter to shut down. This is a protective measure to prevent damage to the system.
To resolve grid undervoltage issues, check the voltage levels at the grid connection. Ensure they meet the inverter's operational requirements and consult your utility provider if necessary.
Error 004 signifies that the inverter has detected a grid undervoltage condition. This occurs when the voltage supplied by the utility grid falls below the inverter's operational threshold, which is crucial for maintaining safe and efficient operation. The inverter utilizes internal voltage sensing circuitry to continuously monitor the AC voltage levels. If the voltage dips below the set limits, the inverter will trigger a shutdown to prevent damage. This protective measure is in accordance with NEC guidelines, ensuring that the inverter does not operate outside safe voltage ranges, which could lead to equipment failure or safety hazards.
When the Sungrow inverter triggers Error 004, users may observe the following symptoms: the inverter's LED indicator may flash a specific pattern indicating an error, the monitoring app may display an alert regarding grid undervoltage, and there will likely be a noticeable drop in energy production as the inverter shuts down to protect itself from low voltage conditions.
Always consult a licensed electrician or certified solar installer when troubleshooting electrical issues. Working with electrical systems can be hazardous and should only be performed by qualified licensed technicians.
To prevent future occurrences of Error 004, ensure that the inverter's grid settings are regularly reviewed and updated based on local utility requirements. Conduct routine maintenance checks on all electrical connections to ensure they are secure and free from corrosion. Furthermore, consider installing surge protection devices to safeguard against voltage fluctuations from the grid.