Low
S.108 on Vaillant ecoTEC plus System

Your boiler is currently performing a standard safety check to clear out the combustion chamber before it starts heating up.

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

Purging the combustion chamber, fan in operation

Engineer required

This fault requires a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.

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Related fault codes

F.22View →

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