Thank you Shaun, that is something I have never even heard of and an excellent thing to check. I will get the engineer round to check both. So, those metallic flakes in your photo, where do they come from?
The gas pressure point does...
Dear boiler engineers and forum viewers, and ideally an old school former Glow Worm engineer or three,
An odd conundrum.
I have an old Glow Worm Compact 100PP permanent pilot condensing boiler. It was fitted to my house back in 2001...