7 fault codes with plain-English explanations, severity ratings, DIY guidance, and repair cost estimates.
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Your boiler is struggling because the water is moving through it too quickly for it to heat up properly.
Your boiler has detected that the water inside is getting too hot and has shut itself down to prevent overheating.
Your boiler is struggling to heat the water to the correct temperature because there is an issue with how it manages its internal gas flow.
Your boiler is struggling to detect enough water flowing through it, which is preventing your hot water from working correctly.
Your boiler is struggling to process heat correctly, which is causing rattling or banging sounds and suggests internal components are dirty or clogged.
Your boiler is failing to ignite because the small pilot flame that starts the heating process is not staying lit or will not spark.
Your boiler is leaking potentially dangerous exhaust gases into your home rather than sending them safely outside.
BoilerFaultCodes