Learn about the Solis OV-TEM error, its causes during high temperatures, and solutions.
The OV-TEM error indicates an over-temperature condition in the inverter, often due to high ambient temperatures. This can lead to reduced performance or shutdown to protect the system.
To prevent the OV-TEM error, ensure proper ventilation around the inverter and avoid direct sunlight exposure. Regular maintenance can also help in managing temperature levels.
The OV-TEM (Over Temperature) fault is triggered when the inverter's internal temperature exceeds its operational limits. This is a protective measure designed to prevent damage to the inverter's internal components. The inverter continuously monitors its thermal state, and if it detects excessive heat, it will shut down to avoid failure. High ambient temperatures can exacerbate this situation, especially if the inverter lacks adequate airflow. Additionally, if the string voltage is insufficient due to shading or module issues, the inverter may not operate effectively, leading to overheating.
During high ambient temperatures, the Solis inverter may display an OV-TEM error code, typically indicated by a flashing LED pattern on the inverter. Users may also notice alerts in the monitoring app, indicating a drop in energy production or a complete halt in operation. This fault can lead to significant production losses, especially during peak sunlight hours.
Always consult a licensed electrician or certified solar installer when performing maintenance or troubleshooting on your solar system to ensure safety and compliance with local electrical codes.
To avoid future OV-TEM errors, ensure the inverter is installed in a shaded, well-ventilated area. Regularly clean and inspect the inverter and array for debris, shading, and module integrity. Schedule annual maintenance checks to monitor the condition of electrical connections and the overall system performance. Additionally, consider implementing monitoring solutions that alert you to temperature and performance issues before they lead to shutdowns.