Boiler help
Boiler problems, explained simply
Simple guides for when something goes wrong with your boiler. What it means, what you can safely check, and when to call an engineer.
Vaillant F.28 – your boiler won't light
Your boiler tried to turn on but couldn't light. Three simple things to check first.
Vaillant F.27 – your boiler thinks there's a flame when there isn't
A safety switch-off you can't fix yourself. Here's what to do.
Vaillant F.62 – a problem turning the gas off
Another safety switch-off. Here's what it means.
One simple thing to check before you call anyone.
Still stuck?
Our no heating or hot water guide covers the basic checks, or call us and we'll get an engineer out.