What's wrong with Taian frequency converter displaying 36.6?

Power grid overvoltage alarm. According to the query, Zhongguancun is displayed on the Internet.

1, grid overvoltage is one of the main reasons for the display overvoltage of Taian inverter. In the case of overvoltage in the power grid, the capacitor voltage in the system will rise. When the voltage exceeds the rated voltage of the inverter, the inverter will display overvoltage alarm information.

2. It needs to be solved by controlling the input voltage of the power grid or adding a filter at the input end.