Learn about Growatt Error Code 300, its meaning, causes, and solutions for grid voltage issues.
Error Code 300 indicates that the AC voltage is outside the acceptable grid limits. This can lead to inverter shutdown to protect the system.
To resolve this error, check the grid voltage levels and ensure they are within the specified range. If the issue persists, consult a technician.
Error 300 is triggered when the inverter detects that the AC voltage from the utility grid is outside its programmed operational limits. This can occur due to high or low voltage conditions that exceed the inverter's set thresholds, which are designed to protect both the inverter and the solar array from damage. The inverter continuously monitors grid voltage and frequency, and if these parameters fall outside the acceptable range, it will disconnect to prevent potential damage. Such disconnections are critical for maintaining system safety and compliance with the National Electrical Code (NEC).
Upon experiencing Error 300, users may observe the inverter's LED indicator flashing a specific pattern or color that signals an AC voltage issue. Additionally, the monitoring app may display alerts indicating that the inverter has ceased operation due to grid voltage limits being exceeded. Users may also notice a significant drop in energy production, with the inverter reporting zero output.
Always consult a licensed electrician or certified solar installer when dealing with electrical components. Working with high voltages poses serious risks, and licensed technician assistance is crucial for ensuring safety and compliance.
To avoid encountering Error 300 in the future, ensure regular maintenance checks on the inverter and associated wiring. Periodically monitor grid voltage through the inverter's app to identify any fluctuations early. Additionally, verify that the inverter settings are correctly configured in accordance with local utility requirements. Consider installing surge protection devices to mitigate the effects of transient voltage spikes.