BoilerFaultCodesYour boiler thinks a flame is still burning even after it has been told to turn off, which is a safety conflict that stops the system from running.
Book a Gas Safe engineer within 24–48 hours. Your boiler may be unsafe or could break down completely if left.
Technical description: Flame detected even though appliance is switched off.
What causes this fault?
This fault occurs when the boiler's internal sensors continue to detect a flame or electrical current even after the gas valve has been closed. The most common cause is a carbon-clogged sensing electrode sending a false signal, but it can also be triggered by a fault in the main control board or a short in the internal wiring. Because it is a safety concern for the boiler to 'see' fire when it shouldn't, the system shuts down completely to prevent damage.
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 F7 — no call-out fees, no surprises.
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Worcester Bosch RD 532i RD 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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