Learn about SMA error code 39, its causes, and solutions for insufficient feed-in conditions.
Insufficient feed-in conditions in winter can be caused by snow cover, reduced sunlight, and lower temperatures affecting solar panel efficiency.
To resolve SMA error code 39, ensure that the solar panels are clear of snow and debris, and check the inverter settings for optimal performance.
Error 39 is triggered when the inverter detects insufficient feed-in conditions, often related to environmental factors. The inverter continuously monitors solar irradiance levels and the performance of the PV array. If the irradiance falls below a certain threshold, or if there are issues with the array's electrical integrity—such as ground faults or voltage drops—it will enter a protective state to prevent damage. The inverter also checks for grid frequency limits; deviations can prompt a shutdown to maintain safety protocols.
Homeowners may notice that the inverter's LED indicator is blinking or displaying an error 39. The monitoring app may show a significant drop in energy production, often coinciding with winter months. Alerts may indicate insufficient feed-in conditions, and the inverter may remain offline or produce minimal energy.
Always consult a licensed electrician or certified solar installer when troubleshooting electrical issues to ensure compliance with safety standards and local codes.
To prevent future occurrences of error 39, regular maintenance should include snow removal from the array, periodic inspection of electrical connections, and ensuring that the inverter settings are appropriate for seasonal changes. Additionally, installing a monitoring system that alerts homeowners to performance issues can facilitate quicker responses.