23 fault codes with plain-English explanations, severity ratings, DIY guidance, and repair cost estimates.
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Your boiler has detected that the temperature inside the exhaust flue is too high, so it has safely shut down to prevent damage or danger.
Your boiler has stopped working because the water pressure inside your heating system has dropped too low.
Your boiler has detected that the water pressure inside your heating system is currently set too high for it to operate safely.
Your boiler is struggling to detect the temperature of the water used for your taps and showers, so it has stopped providing hot water to prevent any potential damage.
Your boiler has detected an issue with the sensor that measures the temperature of the water used for your radiators, meaning it has safely shut itself down to prevent overheating.
Your boiler has detected an internal safety fault and has stopped operating to prevent further damage.
Your boiler has detected that it is dangerously overheating and has automatically shut itself down to prevent damage.
Your boiler is failing to detect a flame, which means it cannot safely light or stay running to provide you with heating or hot water.
Your boiler is struggling to move water through your heating system, which is preventing it from heating your home properly.
Your boiler's control system is struggling to read a secondary temperature sensor, which has caused it to stop working to ensure your safety.
Your boiler has detected that the gases produced during burning are not escaping properly, so it has safely shut down to prevent the build-up of dangerous fumes.
Your boiler has detected an issue with the sensor that monitors exhaust gases and has shut itself down to keep your home safe.
Your boiler has detected that the internal fan is not spinning as it should, so it has safely shut down to prevent unsafe operation.
Your boiler has detected that the water temperature in one of your heating circuits has become dangerously high and has automatically shut down to prevent damage.
Your boiler is having trouble reading the temperature for one of your heating zones, which may stop that specific area from warming up properly.
Your boiler has detected that the water temperature in one of your heating circuits has become dangerously high, so it has automatically shut down to prevent damage.
Your boiler is having trouble communicating with the secondary heating zone in your home, which means that specific area may not be receiving heat as expected.
Your boiler is struggling to read the temperature from the solar panel unit on your roof, which is preventing the solar-assisted heating system from operating correctly.
Your boiler is having trouble communicating with the solar water heating sensor, which may prevent it from using solar-heated water correctly.
Your boiler's temperature sensor responsible for reading your solar water heating system is not working correctly, which may prevent your solar panels from contributing to your hot water supply.
Your boiler has detected an issue with how the settings are configured for a solar heating add-on, preventing it from operating correctly.
Your boiler has detected an issue with how its internal settings are communicating, likely due to a configuration error or a faulty circuit board connection.
Your boiler's internal computer is struggling to communicate with its own internal components, meaning it has shut down as a safety precaution.
BoilerFaultCodes