BoilerFaultCodesYour boiler's internal sensor that monitors the temperature of water leaving the unit has stopped working correctly, and the system has shut down to prevent overheating.
Book a Gas Safe engineer within 24–48 hours. Your boiler may be unsafe or could break down completely if left.
Technical description: Flow sensor error – sensor damaged, short circuited, sensor damaged or wiring broken
What causes this fault?
This fault occurs when the boiler's control board loses communication with the temperature sensor attached to the main heating pipe. The most common reason is that the internal sensor has physically degraded and failed, or the electrical wires connecting it to the main computer have become loose or damaged.
Engineer required
This fault requires a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.
Find a Gas Safe engineer
Search the official register for a qualified engineer in your area.
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A boiler cover plan would cover faults like F10 — 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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