Full valve. From what you say its got power which is getting through the coil but the valve is stuck closed, so if a tap wont free it; its never worth going into the valve to find out why. If it stuck once it'll stick again anyway so just replace it.
If you need to find a tradesperson to get your job done, please try our local search below,
or if you are doing it yourself you can find suppliers local to you.
Select the supplier or trade you require, enter your location to begin your search.
Please select a service and enter a location to continue...
Are you a trade or supplier? You can create your listing free at DIYnot Local