on your iron is a micro switrch. that when pressed causes the solinald on your genrator to click and release steam from yor holes on your iron. when the washer valve inside that solinord fails the clicking stops and you get no steam or constant steam depending on if the washer failed closed or open in the pipe. It has a squarew ore round coil on top of it and a steam knob at the side and electirical plug to the back of the coil. Take the coil offd and change the pipe with the valve. It cost around 18 pounds and screws into the tank. If its an electrical valve than you have to open the generaTOPR AND LOOK FOR AN ELECTRICAL SWITCH i have only the other irons at my business which i am always fixing.
summercos@yahoo.co.uk, October 2008