6 fault codes with plain-English explanations, severity ratings, DIY guidance, and repair cost estimates.
Replaced by: Baxi Duo-tec Combi HE
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Your boiler has stopped working because it cannot stay lit, likely due to a blocked pipe that drains away water created during the heating process.
Your boiler has detected dangerously high temperatures and has automatically shut itself down to prevent damage or fire risk.
Your boiler is struggling to clear exhaust gases safely, so it has shut itself down to prevent any harmful fumes from entering your home.
Your boiler has stopped working because it has detected that the water pressure inside the system is too low or the water pump is struggling to circulate water properly.
Your boiler is struggling to detect the temperature of the water it is trying to heat, so it has shut down your hot water supply to prevent overheating.
Your boiler has stopped heating your radiators because it is receiving an incorrect or missing signal from the device that monitors water temperature.
BoilerFaultCodes