Emergency
F05 on Heatline Capriz Plus

Your boiler is struggling to clear exhaust fumes safely, so it has turned itself off to prevent any risk of fumes entering your home.

Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed

Act immediately

Turn off your boiler and stop using gas appliances. Call a Gas Safe engineer now. This fault can be dangerous if ignored.

Technical description

Air pressure switch failure / Fan failure

Engineer required

This is a emergency 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

F04View →F06View →

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