Boiler help

Vaillant F.28 – your boiler won't light

Your boiler tried to turn on but couldn't light. So it switched itself off to stay safe.

Try these first

• Check your gas is on. Does your cooker hob work? If you've got a top-up meter, make sure there's money on it.• If it's freezing outside, look for the thin white pipe coming out of the wall near your boiler. It can freeze. Pour some warm water over it. Not boiling water, just warm.• Press the reset button on the boiler. Only once.

Still showing F.28? Give us a call and we'll send an engineer out.

What's most likely wrong?

It's usually one of the parts that lights the boiler, like the spark part or the gas valve. Sometimes it's 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.27 – your boiler thinks there's a flame when there isn't
Vaillant F.62 – a problem turning the gas off
Boiler screen gone blank?
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