Low
S.13 on Vaillant Turbomax Plus 828

Your boiler is currently trying to light the flame to provide hot water, but it has not quite finished the process yet.

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

Ignition sequence (hot water operation)

DIY fix possible

Check if hot water is being delivered to your tapsMonitor the display to see if it changes to a heating code (e.g. S.14)No action is required as this is a normal status message

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Related fault codes

S.11View →S.14View →F.28View →F.29View →

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