you will have to open up the machine at the top and take out the circuit board and clean and dry it and make sure everything is tight fitted if it still flashing you will have to buy a new circuit board, I had a washing machine repair man come out and he said that this model is known for being terrible and a new board would cost £90 so i am going to cut my losses and buy a bosch machine as they are known to last longer with less problems, hope this helps
isabelle
January 2010