Low
S.97 on Vaillant ecoTEC Pro 30

Your boiler is currently performing a routine automated safety check of its internal sensors and will resume normal operation once the process is complete.

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

Water pressure sensor test running, heating demands are blocked.

Engineer required

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

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Related fault codes

S.96View →F.22View →

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