Explore the causes and solutions for Solis OV-DC overvoltage issues in cold weather.
Cold weather can lead to increased voltage due to lower temperatures affecting the inverter's performance. This can result in overvoltage conditions that may trigger protective measures.
To troubleshoot, check the inverter settings and ensure proper installation. Additionally, monitor the system's voltage output during cold conditions to identify any anomalies.
The Solis OV-DC inverter is designed to monitor the input voltage from the solar array. When cold weather occurs, the voltage output from the solar panels can increase due to the lower temperature coefficient, which means the panels produce higher voltage at lower temperatures. If this voltage exceeds the inverter's maximum input voltage threshold, the inverter will trigger an overvoltage fault to protect itself and the system. This fault can also be influenced by factors such as insulation resistance measurements, which, if compromised, could lead to erroneous voltage readings and subsequent faults.
Users may notice the inverter displaying an error code related to overvoltage on the monitoring app or the inverter’s LED indicators may flash in a specific pattern indicating a fault. Additionally, there may be a noticeable drop in energy production, as the inverter may not operate optimally under these conditions.
Always consult a licensed electrician or certified solar installer when troubleshooting electrical issues to ensure safety and compliance with local codes.
To avoid future overvoltage issues, ensure that solar panel strings are designed correctly according to the inverter specifications, particularly regarding maximum voltage limits. Regular maintenance and inspections of the array connections and conductors can prevent corrosion and ensure optimal performance. Additionally, consider using temperature-compensating devices or configurations that account for voltage increases in cold weather.