If my memory is correct the fuel saver f is fan flued & has electronic ignition every time the boiler fires. if your system is calling 4 heat & the boilers not responding you need help not advice.Not sure if theres an over heat re-set on theat boiler.If u hav the instuctions try lookin that up.
err glowworm there is an overheat cut-out button which if memory serves me right is on the box near the boiler stat (it will need a firm click to re-set 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