Low
S.96 on Vaillant ecoTEC Pro 30

Your boiler is currently running a routine self-check of its internal temperature sensors, so it has temporarily paused heating to ensure everything is working correctly.

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

Return 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.97View →S.98View →

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