Model Number:
Brand: Brand
Age: Less than 1 year

Model Number: WAW285H2UC/12
Brand: Bosch
Age: 1-5 years

My washing machine won't get into the high speed spin, even if I empty it. It acts as if there's an unbalanced load, and just as the spin is about to speed up, it slows down immediately, moves the drum slowly in each direction as if it's balancing the load, but never gets up to speed. What senses the load balance?