nanussi fle1215 start/pause light stays flashing?

My Zanussi fle1215 washing machine start/pause is fashing
and stays flashing after programme for wash has been selected and wont start.Also door wont open while power is on.in order for door to open machine must be switched off for three mins and door will only open while power is off.

How do i get my machine to work.Filter is clean and water has been drained away.