Hi!
I'm working on the assuption that an 'Error Code 3' is shown on the digital display when the machine stops.
This fault code tells you that the washing machine has detected an overfill situation and, usually, they will stop and drain for safety then report the error code above.
This error can be caused by poor quality detergent or overdosing detergent both leading to excessive foam. This foam traps air in the pressure sensor hose and falsifies the error of an overfill. If this is the case, if you leave the machine for an hour or so and try it again it should then be clear but, whatever you do when you try it again do not put more detergent in the machine.
If this solves it, adjust the detergent quantity or switch to a better quality detergent to prevent it happening again.
If this diagnostic isn't a solution, please add to your post which error code is shown, I'll be able to advise more accurately.
Good Luck!
Leon.
August 2014