Why does the Rince Aid light blink on my Hotpoint Aquarius FD60?

When I try to start my dishwasher it will go to the programmes and light the preferred pr.gr. light but will not take in any water and will not start. There was some water left from when this problem occured and I removed the filter and cleaned it and scooped out the water but the thing still blinks the Rince Aid light at me when I try to make it wash. Why and what can I do?