Indesit D41 Dishwasher. Missing Pre Wash cycle?

My Indesit D41 Dishwasher flooded due to a blocked filter. Ive cleared all of that but now even though its making the 4 beep reset noise, when you turn the dial to start a new programme it skips straight past the Prewash light onto the 2nd light where it sits and just makes a whirring noise - no water is going in and then after 3 mins or so it does the 4 beeps again and the lights go out.....Help please