Low
S.34 on Vaillant Turbomax Plus 828 E

Your boiler is temporarily running its pump to prevent the water inside from freezing because the temperature around the pipes has dropped low.

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

Frost protection mode

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.30View →S.31View →

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