High
F.32 on Vaillant Turbomax Plus 828 E

Your boiler has detected an issue with the fan that helps it vent safely, so it has stopped working to protect itself.

Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed

Call an engineer soon

Book a Gas Safe engineer within 24 to 48 hours. Your boiler may be unsafe or could break down completely if left.

Technical description

(837/637 only) | Main heat exchanger anti freeze protection mode due to fan speed deviation too great | Check fan control cables/connections; Defective fan control cable;

Engineer required

This is a high severity fault. Stop using the boiler and call a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.

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Related fault codes

F.33View →

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