Hotpoint BWM129 super wash/rinse hold/door button flashing red?

Hi, when I run any program on my Hotpoint BWM129 Washing Machine, it runs for a short while then stops and the super wash, rinse hold and door button are all flashing, the door will open but the clothes are full of water.
I have removed the black circle at the bottom and water released and I found a hair grip, checked that the rotar moved freely, also removed the pipe from the back of the rotar to check and nothing blocked there.

Removed grey water out pipe no blockages, also removed top of washer and blown down thin tube from pressure switch.

Set washing machine off and ran for 10 mins and then buttons flashed, ran fast spin and this worked fine and drained all water and ran to end.

Set a different program number and it ran for about 20 mins then started flashing again.

Please help as it is driving me insane.

Kirsty
April 2012