Emergency
Boiler Fault Finding 12 on Grant Vortex 15-20

Your boiler is allowing burnt gases to escape inside or near the unit, which is a serious safety concern that requires an immediate professional inspection.

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

Combustion fumes smell. Check boiler cleaning cover and seal, burner flange seating, flue seal, and condensate trap.

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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