Humming noise is pump trying to turn. It either has a blockage or maybe just partly seized up through lack of use while you were away. Bail as much water out as possible by hand to reduce the weight. Then tip machine back against wall as far as possible. Look under front right hand corner & locate drain pump. Turn the plastic fan on it back & forward a few times. Hopefully pump will come free to turn. Stand machine up, turn on power & advance to final spin. Press start & see if pump runs. If still humming then pump will have to come out to clear blockage.
Lincoln Appliance NZ, October 2009