Boiler help

Vaillant F.27 – your boiler thinks there's a flame when there isn't

Your boiler has spotted a problem with its flame, so it's switched itself off to keep you safe.This one isn't something you can fix yourself. Please don't keep pressing reset. Just give us a call and we'll get an engineer out to you.

What's most likely wrong?

It's usually the gas valve, the spark part or its wire, or the main circuit board. The engineer will check to find out for sure.

Can you smell gas?

Don't touch the boiler. Call the gas emergency line on 0800 111 999 now.

Need an engineer?

Call us on 0330 912 2680. It's £99.99 to get an engineer to your door, and they'll tell you the price of any repair before they start.

More boiler help

Vaillant F.28 – your boiler won't light
Vaillant F.62 – a problem turning the gas off
Boiler screen gone blank?
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