BoilerFaultCodesYour boiler has tried to light several times but cannot establish 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: More than 5 start attempts without any flame formation.
What causes this fault?
This fault occurs when the boiler's control system attempts to ignite the burner five times but fail to detect a stable flame. The problem is usually caused by a lack of gas supply, a worn-out ignition spark electrode, or a blockage in the flue system preventing the gas from burning safely.
This fault is more common during extreme cold snaps, as external gas meters or regulators can freeze, restricting the gas flow required for ignition.
DIY fix possible
Check that your gas emergency control valve is open and you have credit on your gas meter.Check if other gas appliances in your home, such as a hob, are working correctly.Press the 'Reset' button on the boiler control panel for two seconds to see if it restarts.
Find a Gas Safe engineer
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A boiler cover plan would cover faults like e4 — no call-out fees, no surprises.
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Remeha Avanta 18V 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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