BoilerFaultCodesYour boiler is struggling to light or cannot detect a flame while trying to provide central heating.
Book a Gas Safe engineer within 24–48 hours. Your boiler may be unsafe or could break down completely if left.
Technical description: Burner ignition and flame detection (CH).
What causes this fault?
This fault occurs when the boiler attempts to start the heating process but fails to create or maintain a steady flame. The most common reasons include a lack of gas reaching the burner, dirty components that cannot spark correctly, or a sensor that can no longer 'see' the flame even when it is lit.
This issue often surfaces during the first cold snap of autumn when the boiler is suddenly forced to work harder after sitting idle all summer.
DIY fix possible
Check that your gas pre-payment meter (if applicable) has credit.Verify that other gas appliances, such as a hob, are working correctly.Reset the boiler by following the instructions in your user manual.
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 3 — no call-out fees, no surprises.
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Ideal Response SE 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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