Emergency
E 22 on Chaffoteaux Minima HE

Your boiler is unable to safely vent exhaust gases, so it has stopped working 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

Faulty air pressure switch

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

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