BoilerFaultCodesYour boiler has tried to light several times but has been unable to create or detect a flame, causing the system to lock out for safety.
Book a Gas Safe engineer within 24–48 hours. Your boiler may be unsafe or could break down completely if left.
Technical description: Burner ignition
What causes this fault?
This fault occurs when the boiler's internal computer calls for heat but cannot confirm that a stable flame has been established. It is often caused by a lack of fuel reaching the burner, worn-out spark components that fail to ignite the gas, or a dirty sensor that cannot 'see' the flame even if it is present.
This issue is more frequent during the first cold snap of autumn, as internal components like gas valves can seize up after being idle throughout the summer.
DIY fix possible
Check that your gas emergency control valve is open and that other gas appliances in your home are working.If you have a prepaid gas meter, ensure it has sufficient credit.Press the reset button on the front of the boiler for five seconds to attempt a restart.
Find a Gas Safe engineer
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A boiler cover plan would cover faults like 3 — no call-out fees, no surprises.
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Potterton Envoy Plus 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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