BoilerFaultCodesYour boiler has shut down because it detected a repeat issue with its exhaust system three times in one day.
Book a Gas Safe engineer within 24–48 hours. Your boiler may be unsafe or could break down completely if left.
Technical description: Flue gas fault – fault F07 happened 3 times in the last 24 hours
What causes this fault?
This fault occurs when the boiler's safety sensors detect that exhaust fumes are not being cleared away correctly through the flue pipe. It is triggered after the system identifies a recurring airflow issue several times in a single day, causing the boiler to shut down for safety. Common reasons include a failing fan, a blocked flue, or a faulty pressure switch that can no longer accurately monitor the flow of gases.
This issue can be more frequent during periods of heavy wind, as strong gusts can sometimes obstruct the flue terminal and interfere with the pressure readings.
Engineer required
This fault requires a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.
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