Sense 230V - voltage
This won't work as well as you expect.

This type of motor is a split-phase capacitor-run motor. It has a capacitor connected between the two L connections. You apply line voltage to one connection, and the other one gets a voltage that's delayed by the capacitor, creating a phase shift that determines the rotation direction.

In other words, both terminals will have AC voltage on them, regardless of which way the motor is running.