Re: HELP! Fisher & Paykel model : GW701-U
If the machine fills continuously, regardless of whether it is switched on or off, you have an inlet valve failure (Cheap). If it fills continuously only when the power is on, you have a component failure on the computer board so power is being constantly supplied to the valve (Expensive).
If you are seeking true water efficiency, you need to consider a front loading machine.
HTH,
Regards,
Penguin45.