Learn how to troubleshoot low production issues in Hoymiles systems caused by panel shading.
Common causes include shading, dirt on panels, and equipment malfunction. Each can significantly reduce energy output.
Improving performance can involve trimming nearby trees, cleaning panels, and ensuring proper installation angles.
The inverter relies on the performance of each panel within the array to optimize energy conversion. When shading occurs, it can cause a mismatch in voltage across the strings, leading to reduced overall output. The inverter may trigger protective measures to prevent damage, such as reducing output or entering a fault mode. This is often a result of the inverter's internal algorithms detecting discrepancies in current flow or voltage levels, which can be exacerbated by factors like RISO measurement failures or ground fault detection mechanisms.
Homeowners may notice a significant drop in energy production, reflected in their monitoring app as lower kWh output than expected. Additionally, the inverter's LED indicators may show abnormal patterns, such as blinking or steady red lights, indicating performance issues. Alerts may also appear on the monitoring platform, specifically related to low production or shading events.
Always consult a licensed electrician or certified solar installer for any electrical work or troubleshooting to ensure safety and compliance with local codes.
To avoid low production due to shading in the future, regularly maintain and clean the solar panels, ensuring they are free from debris. Conduct annual inspections to assess the surrounding environment for potential obstructions and adjust panel orientation as necessary. Implement a monitoring system that alerts you to performance drops, allowing for timely troubleshooting and corrective action.