BoilerFaultCodesYour boiler has shut down because it has detected that the internal exhaust gases are becoming too hot, which can indicate a blockage or a build-up of debris inside the main heat exchanger.
Book a Gas Safe engineer within 24–48 hours. Your boiler may be unsafe or could break down completely if left.
Technical description: High fume temperature – the exchanger probe detects an excessive temperature for over 2 minutes – check the exchanger.
What causes this fault?
This fault occurs when the boiler's internal sensors detect that the exhaust gases are reaching dangerously high temperatures, triggering a safety shutdown to prevent damage. The most common reason is a buildup of limescale or debris inside the main heat exchanger, which prevents heat from being transferred to the water and forces it out through the flue instead.
Engineer required
This fault requires a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.
Find a Gas Safe engineer
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A boiler cover plan would cover faults like F07 — no call-out fees, no surprises.
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Ferroli Modena HE is discontinued — time for a new one?
Parts for discontinued models can be hard to find and expensive. A new A-rated boiler could save you money on both repairs and energy bills.
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