BoilerFaultCodesYour boiler has tried to light but failed to start, which means you currently have no heating or hot water.
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's control system attempts to start the burner but fails to detect a stable flame after several attempts. The most common reasons include a lack of gas reaching the unit, a dirty ignition probe that cannot create a spark, or a component failure that prevents the gas valve from opening.
In extremely cold weather, this error can be triggered by a frozen gas meter regulator or ice blocking the external flue terminal, both of which prevent the boiler from lighting safely.
DIY fix possible
Check that your gas supply is turned on at the meterIf you have a prepaid meter, ensure you have credit availablePress the Reset button on the control panel to see if the boiler 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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Vokera Pinnacle 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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