Learn how to troubleshoot the BMS Communication Lost issue in Goodwe ET series inverters with Pylontech batteries.
BMS Communication Lost can occur due to wiring issues, firmware problems, or battery compatibility. Checking connections and updating firmware may help.
Resetting the BMS communication typically involves power cycling the inverter and battery system. Ensure all connections are secure before restarting.
The Goodwe ET series inverter relies on a continuous communication link with the Battery Management System (BMS) to monitor battery health, charge levels, and overall system performance. When this communication is interrupted, the inverter triggers a fault condition to prevent potential damage to the system. This interruption could stem from issues such as a broken communication cable, incorrect settings, or power supply problems. The inverter's internal logic is designed to safeguard against scenarios where it cannot accurately assess the battery’s state, thus protecting both the inverter and the battery from potential overcharging or deep discharging conditions.
Homeowners may observe that the Goodwe ET series inverter displays a fault code related to BMS communication loss. The LED indicators may flash in a specific pattern indicating an error, and the monitoring app may show alerts regarding communication failures. Additionally, there may be a noticeable drop in energy production, as the inverter is unable to receive or process battery data from the BMS.
Always consult a licensed electrician or certified solar installer when performing troubleshooting or repairs on your solar system to ensure compliance with safety standards and regulations.
To prevent future occurrences of BMS communication loss, regularly inspect and maintain the communication cables and connections, ensuring they are free from wear or damage. Keep the inverter and BMS firmware updated to the latest versions. Additionally, check the system environment for potential sources of interference and ensure proper power supply to the BMS is maintained.