BoilerFaultCodesYour boiler is not firing up properly, which means it cannot light the gas to provide heat 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 tries to light the gas but fails to detect a flame after several attempts. The most common reasons include a worn-out ignition spark, a faulty gas valve that isn't letting fuel through, or an issue with the electrical circuit board that controls the starting sequence.
DIY fix possible
Check if your gas supply is active by testing another gas appliance like a hob.Ensure your credit is topped up if you have a pre-payment gas meter.Press and hold the 'R' or 'Reset' button for at least 2 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 E4 — no call-out fees, no surprises.
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Baxi GA Range 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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