Low Information
S.24 on Vaillant ecoTEC plus Regular

Your boiler is currently firing up and heating normally; this is a status update rather than a fault code.

Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed

Monitor it

This is a minor fault. Keep an eye on it and mention it at your next annual boiler service. Reset the boiler and see if it clears.

Technical description

Burner ignited

What causes this fault?

This status occurs when the boiler has successfully completed its ignition sequence and the burner is now actively heating your water. It is a sign that the internal gas valve has opened and the spark electrode has ignited the fuel to provide heat for your radiators or hot water tank. This is part of the boiler's normal operation and indicates the system is working exactly as it should.

DIY fix possible

This fault may be fixable without an engineer. Check your manual first.

Find a Gas Safe engineer
Search the official register →

Related guides you might find useful

Yellow or orange flame — CO safety

Safety-critical — turn off, read this.

Read →

Is boiler cover worth it?

Break-even maths on monthly cover.

Read →

When to replace your boiler

7 signs repair isn't worth it anymore.

Read →