Learn how to troubleshoot and resolve Fronius Error Code 307 related to low DC current.
Low DC current can be caused by shading, dirty panels, or faulty connections. It's essential to check for any obstructions or maintenance issues.
To improve DC current output, ensure panels are clean and free from debris. Additionally, consider the angle of the panels for optimal sunlight exposure.
The Fronius inverter triggers fault 307 when it detects that the DC current from the solar array is below the operational threshold required for efficient conversion to AC power. This is often due to insufficient solar irradiance in the morning, but it may also result from electrical issues such as low insulation resistance or improper string configurations. The inverter continuously monitors the input current and voltage, and when these values fall outside acceptable limits, it activates protective measures to prevent damage.
Homeowners may notice the Fronius inverter displaying error 307, which indicates that the DC current is too low. This may be accompanied by a flashing LED pattern on the inverter, and monitoring apps may show a significant drop in energy production during the early morning hours when sunlight is limited.
Always consult a licensed electrician or certified solar installer when performing electrical diagnostics or repairs to ensure compliance with local codes and safety standards.
To avoid encountering error 307 in the future, ensure regular maintenance of the solar array, including cleaning panels and inspecting connections. Additionally, consider monitoring solar irradiance levels and scheduling maintenance during low production periods to minimize downtime.