Emergency
Fume thermostat activation on Ferroli Pegasus 67 107 2S

Your boiler has detected that waste gases are not being cleared away properly, so it has safely shut itself down to prevent dangerous fumes from 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.

What the manual says

Manufacturer manual

Fume thermostat activation due to obstruction in the circuit or combustion ducts or bulb damage.

Community-sourced, unverified
We could not tie this code to a specific manual. Treat it as indicative only.
Plain-English guidance below. Severity, DIY steps, costs and parts are our interpretation to help you act, not text from the manual.

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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