The BA13 has a default mode of the sear sensor being activated, this means that the bidet needs to be sat on in order for the functions to work.
However in case the seat sensor does not work, it needs to be deactivated to make the bidet usable.
To determine if the seat sensor is faulty, you would hear an alarm sound / double beep (“Ding ding”) when the remote control is pressed even when the bidet is sat on.
Follow the procedures for deactivating your BA13 seat sensor: