I found out that the Fausto can not work using COM ports with numbers above 9 (COM10, COM11, COM12, ..., etc.) for communication with Season Interface.
Please, keep it in mind when you making your Season Interface based on USB-to-TTL adapters with virtual COM ports (i.e. Prolific PL2303, SiLabs CP2104, etc.)
Check your virtual port number and if it is above 9, you must change it to COM1...COM9.
Open the "Device manager" in Windows, expand "Ports (COM and LPT)" branch, find your virtual port (i.e. Silicon Labs CP210x USB to UART Bridge (COM12)). And if the number is above 9, you must double-click on it, select "Port parameters" tab, click the button "Additional parameters" and change COM port number to any free number from COM1 to COM9.