Low
S.57 on Vaillant ecoTEC Pro 30

Your boiler is temporarily paused for a few minutes as a built-in safety measure to prevent it from overheating.

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

Waiting period, comfort safety mode

Engineer required

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

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