Learn about Sungrow Error Code 818, its causes, and solutions for battery communication errors.
Error Code 818 indicates a communication issue between the battery and the inverter. This can affect system performance and requires troubleshooting.
To resolve battery communication errors, check all connections and ensure firmware is up to date. If issues persist, consult the user manual or contact support.
Fault 818 signifies a communication failure between the Sungrow SH5.0RS inverter and the connected battery system. This error can occur if the inverter fails to receive data from the battery management system (BMS), which monitors the health and status of the battery modules. The inverter relies on this communication to ensure safe operation, including monitoring voltage levels, temperature, and state of charge. If any of these parameters fall outside acceptable ranges, or if there is a disruption in the communication link, the inverter triggers Fault 818 as a protective measure.
Homeowners may observe the inverter displaying Fault 818 on the screen, accompanied by a blinking LED pattern that indicates a communication error. In addition, the monitoring app may show a significant drop in battery performance or output, with alerts indicating that the battery system is offline or not communicating with the inverter.
Always consult a licensed electrician or certified solar installer for troubleshooting and repairs to ensure safety and compliance with local electrical codes.
To avoid future occurrences of Fault 818, ensure regular maintenance checks on all electrical connections, especially in areas prone to moisture or corrosion. Keep the inverter and battery system firmware updated. Additionally, monitor environmental conditions to prevent overheating and ensure proper ventilation around the inverter and battery units.