What is wrong with my Tricity Bendix AW1202W Washing Machine?

It is only just over 12 months old so is no longer covered by guarantee. It has just started to stop whilst going through a wash cycle. The progress lights continue though so it looks like the washing has finished when it's not even started. I've checked hoses and drain pump all are fine. Only way we can clear it is to turn the dial to drain or spin and then switch off the machine at the plug for half an hour or so before trying again. Took 5 attempts last night to wash one load of washing and every time I thought it was going to work, it stopped again! Any help/suggestions gratefully received