8 fault codes with plain-English explanations, severity ratings, DIY guidance, and repair cost estimates.
Replaced by: Promax SL
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Your boiler has detected that it is getting too hot and has automatically shut itself down to prevent damage or danger.
Your boiler is struggling to start up correctly because the internal mechanism that pushes air through the system is failing to engage.
Your boiler's fan is running as normal, but the system is failing to ignite the gas required to produce heat.
Your boiler is failing to ignite the main flame, which means you currently have no heating or hot water because the system cannot generate the heat needed.
Your boiler is failing to ignite because it cannot create the necessary spark to light the burner.
Your boiler has automatically shut itself down because it became too hot, acting as a safety measure to prevent damage.
Your boiler is failing to start because the small pilot flame that triggers the main burner cannot ignite.
Your boiler has detected a faulty component that usually helps cool the system down after it finishes running, meaning it may stop working to prevent overheating.
BoilerFaultCodes