6 fault codes with plain-English explanations, severity ratings, DIY guidance, and repair cost estimates.
Replaced by: Evomax
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Your boiler is failing to light the gas burner and has gone into a safety lockout mode to prevent unburned gas from building up.
Your boiler has failed to start because it cannot detect a flame, meaning you currently have no heating or hot water.
Your boiler has stopped itself for safety because it failed to light or stay running, and it needs to be manually reset.
Your boiler has lost all electrical power, meaning it cannot provide any heating or hot water until the power supply is restored.
Your boiler has become too hot and has automatically shut itself down to prevent damage.
Your boiler has switched itself off because the water inside became too hot, likely due to a circulation issue.
BoilerFaultCodes