F0009 fault indicates that the MOT overheating motor is overheated. \x0d\ According to the estimation of transmission or temperature feedback signal, the motor is overheated. \x0d\？ Check whether the motor is overloaded. \x0d\？ Adjust the parameters used for estimation (3005 ~ 3009). \x0d\？ Check the parameter settings in the temperature sensor and parameter group 35. \x0d\ You used the motor temperature measurement function. If the motor is not overtemperature, parameters 3005 ~ 3009 (with temperature measuring element) and 35 groups (without temperature measuring element) are set incorrectly. You can also turn off the temperature measurement function.