I assume he took the case off as he told my wife that the "flap on the valve wasn't opening and that this could be a problem with the valve or the pcb".
Thanks for the advice corgigazza.
Hi
We came back from a week away to find that our boiler would not light. It is sparking but the pilot light is not getting lit. Fan is running and there is nothing else out of the ordinary. The boiler is a Glow Worm Ultimate 40FF and is eight years old.
A heating engineer came round...