how can i fix my dishwasher?

I have a DX301SK Dishwasher it is working until it reaches 60 minutes left and it stops, it has a symbol on the screen "! 60" what does this mean. The washing cycle is working fine. The symbol "Washing" "Drying" etc that indicate which cycle you are up to goes off.

This washing machine is still under warranty it was purchased with a 5 year warranty which expires on the 31 July 2015.

Dianne Williams
February 2012