I have the above dishwasher and it has started to leak from the bottom of the door in the middle. It seems to be overfilling with water, this fault also occurred some time ago when the machine was still under warranty and was attended to promptly by an engineer, I think he said at the time it was just a matter of pushing a reset button under the machine at the front left of the machine. I have taken the black plastic plate off and had a look but can not see anything obvious to press, can anyone help with this problem or do I have to go shopping for a new machine, this one is only two years old.