Thanks for your advice. I cleaned the sensors on the wheels and still the unit was having a circular dance. From another site mentioning another model there could be a problem with the sensors behind the front bumper bar and yes that was the problem. They needed blowing out with a strong air gun. Now after extensive cleaning my Roomba is running like a dream :-)
Quando isso acontecer, você poderá ver um gráfico da reputação que ele adquiriu ao longo do tempo.
Aqui está uma prévia de como será o gráfico:
Nenhuma reputação adquirida ainda.