5 fault codes with plain-English explanations, severity ratings, DIY guidance, and repair cost estimates.
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Your boiler's internal sensor that detects water movement has developed an electrical fault, causing the system to stop working as a precaution.
Your boiler has safely shut down because it has detected a problem with the internal fan responsible for clearing harmful gases safely outside.
Your boiler has tried to start up several times but failed to light the flame, so it has safely shut itself down.
Your boiler has temporarily shut itself down because the internal temperature became too hot, usually due to a temporary blockage in water flow.
Your Potterton boiler has detected a faulty temperature sensor on the main water pipe, meaning it cannot accurately read how hot the water is.
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BoilerFaultCodes