Learn about the Battery Undertemperature alert on your LG RESU and how to resolve it.
A Battery Undertemperature alert indicates that the battery temperature is below the optimal operating range. This can affect performance and efficiency.
To resolve this alert, ensure the battery is installed in a temperature-controlled environment. If the issue persists, consult a technician.
The Battery Undertemperature alert is triggered by the inverter's battery management system (BMS) when it detects that the battery temperature has fallen below the operational threshold. This fault is primarily a safety measure to prevent damage to the lithium-ion cells. The BMS continuously monitors the internal temperature through a designated sensor; if readings indicate a temperature below the acceptable range, the inverter will limit charging and discharging activities to protect battery integrity. This is crucial for maintaining the overall lifespan and performance of the battery.
When the LG RESU battery displays a Battery Undertemperature alert, users may observe a flashing LED indicator on the battery unit, alongside notifications in the monitoring app indicating low temperature conditions. Additionally, there may be a noticeable drop in solar production as the system may limit output to protect the battery.
For any electrical work, including troubleshooting and repairs, it is essential to engage a licensed electrician or certified solar installer to ensure compliance with local codes and safety standards.
To prevent future occurrences of the Battery Undertemperature alert, ensure that the battery is installed in a temperature-controlled environment, away from cold drafts and direct exposure to the elements. Regular maintenance checks should include inspecting insulation and ensuring proper thermal management systems are in place. Additionally, keeping the inverter settings updated according to seasonal changes can help maintain optimal battery performance.