BoilerFaultCodesYour boiler is failing to light the gas burner properly and has locked itself out for safety after several unsuccessful tries.
Book a Gas Safe engineer within 24–48 hours. Your boiler may be unsafe or could break down completely if left.
Technical description: Failure of flame after 5 attempts to ignite
What causes this fault?
This fault occurs when the boiler tries to light the gas burner five times but fails to detect a stable flame. The most common reasons are a build-up of carbon on the ignition probes, a lack of gas supply to the unit, or a internal electrical component failing to generate the necessary spark.
This fault often appears during the first cold snap of autumn when a boiler that has been idle all summer is suddenly forced to work harder, highlighting wear and tear on the electrodes.
DIY fix possible
Check if other gas appliances like your hob are working to ensure gas is reaching the propertyEnsure your gas pre-pay meter, if you have one, has creditPress the 'Reset' button on the boiler control panel for two seconds
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 E04 — no call-out fees, no surprises.
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Remeha Avanta 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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