Can I know at what temperature will my X3-ULTRA external Fan start working?

Please refer to below:
a. When ARM is initially turned on, the fan is initialized.
b. If the fan is not in Normal or EPS operation, it will maintain the state before Normal or EPS for 5 minutes before turning off the fan. If a PV reverse connection fault is reported, the fan speed will be maintained at 58%.
c. During normal operation, when the temperature of the control board, PV radiator, or inverter radiator is greater than or equal to 40°C, the fan is turned on at a speed of 25%. When the temperature of any NTC sample reaches 55°C, the speed increases to 40%. When the temperature is greater than or equal to 55°C and the PV current is greater than 32A for 30 seconds, the speed continues to increase, up to a maximum of 58%.
d. After the fan speed exceeds 40%, when all the PV currents are less than 30A for 2 minutes, the speed is maintained at a maximum of 40%. When all three temperatures are less than 38°C, the fan is turned off.
e. When the single-phase output current of EPS is greater than 1.15 times the rated output current for 15 seconds, the external fan rotates at full speed.