2 fault codes with plain-English explanations, severity ratings, DIY guidance, and repair cost estimates.
This boiler uses indicator light combinations
Note which lights are on, off, or flashing and at what speed. Match the combination to the cards below. Do not reset until you have noted the pattern. How to read fault codes →
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Your boiler has stopped working because it cannot light its internal flame safely.
Your boiler has failed to light the flame after multiple attempts, so it has automatically shut off its gas supply as a safety precaution.
BoilerFaultCodes