BoilerFaultCodesYour boiler has tried to light several times but has been unable to produce a flame, meaning your heating and hot water will not work.
Book a Gas Safe engineer within 24–48 hours. Your boiler may be unsafe or could break down completely if left.
Technical description: Ignition failure
What causes this fault?
This fault occurs when the boiler fails to detect a steady flame after several attempts to ignite the gas. The most common reasons include a lack of gas supply to the unit, a worn-out ignition spark, or a build-up of carbon on the internal probes that monitor the combustion process.
This fault is more frequent during the first cold snap of autumn when internal components that have been idle over summer fail to operate correctly upon restart.
DIY fix possible
Check if other gas appliances, like a hob, are working to ensure gas is reaching the property.Verify that your gas prepayment meter has credit.Press and hold the reset button for five seconds to see if the system restarts.
Find a Gas Safe engineer
Search the official register for a qualified engineer in your area.
Gas Safe Register →Protect yourself from future repair bills
A boiler cover plan would cover faults like E01 — no call-out fees, no surprises.
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Potterton Envoy 30 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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