18 fault codes with plain-English explanations, severity ratings, DIY guidance, and repair cost estimates.
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Your boiler has tried to start up several times but has failed to detect a flame, so it has safely shut down to stop any unburned gas from building up.
Your boiler has stopped working because it is failing to ignite and cannot detect a flame, meaning you currently have no heating or hot water.
Your boiler has temporarily shut down because the internal water temperature has climbed dangerously high.
Your boiler has lost the ability to measure the temperature of the water flowing through the heating system due to a sensor or wiring issue.
Your boiler is having trouble measuring the temperature of your hot water, which usually means a sensor needs checking or replacing.
Your boiler's temperature sensor for the hot water storage tank has developed a fault, meaning the system cannot safely monitor or heat your hot water.
Your boiler is struggling to detect the water level inside the system because the sensor that monitors it is disconnected or experiencing a communication error.
Your boiler has lost the signal from the sensor that monitors the temperature of the water circulating back from your radiators, so it has shut down to prevent overheating.
Your boiler's main internal computer and the front control display have lost their ability to talk to each other, preventing the system from operating.
Your boiler's computer is having trouble communicating with its internal parts, meaning the system has safely shut down to prevent incorrect operation.
Your boiler is struggling to turn off its internal flame correctly, which suggests a component meant to cut off the gas supply has failed.
Your boiler's electronic display panel is failing to communicate with the main computer, which prevents the boiler from operating correctly.
Your boiler has lost its connection to the sensor that monitors the temperature of the water circulating through your radiators.
Your boiler's computer components are not communicating correctly, meaning the system cannot run because it does not recognize its own internal hardware configuration.
Your boiler is struggling to move water through its system, which prevents it from heating up your home or water safely.
Your boiler has detected that hot water is not moving through your radiators properly, causing the system to get too hot inside and shut down as a precaution.
Your boiler has stopped working because it cannot correctly detect the temperature of the water flowing through it, likely due to a faulty sensor.
Your boiler has detected that a critical internal safety component has tripped, which means it has safely shut itself down to prevent potential overheating.
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BoilerFaultCodes