Actually, I had the exact same problem after replacing the hoses. Cut off the water supply to the machine. Remove the water hose for cold water from the back of the machine, but leave it connected to the supply. Let the water back in. Make sure you are ready for the pressure. A lot of water will come out from the cold water hose! This removes any air trapped in the hose. Cut the water supply again. Connect the hose to the machine. Now repeat the procedure for the hot water hose. After you have done that, disconnect the power and plug the machine back in and let the water in and your machine should be up and running! This should cancel the previous memory of the flashing lights! At least, it worked for me.
handyman, June 2009