22 fault codes with plain-English explanations, severity ratings, DIY guidance, and repair cost estimates.
Replaced by: Linea HE
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Your boiler has lost the signal from the sensor that monitors your hot water temperature, which will likely prevent the hot water from working correctly.
Your boiler has failed to light the gas burner, which means you will not have any heating or hot water at the moment.
Your boiler has sensed it is getting too hot, usually because the water inside isn't moving around the system correctly.
Your boiler is struggling to clear exhaust fumes safely, which has caused it to shut down for protection.
Your boiler has detected that the water pressure is too low or your water isn't moving through the system properly to operate safely.
Your boiler's internal computer has developed a fault and is unable to communicate correctly with the rest of the system.
Your boiler has failed to ignite or has lost its flame, and it needs to be manually reset to try and spark back into life.
Your boiler has lost its ability to measure the temperature of the water leaving the unit, usually due to a faulty internal sensor or a loose wire.
Your boiler's internal computer parts are having trouble communicating with each other, meaning the system cannot safely start up.
Your boiler has stopped working because it has detected a problem with the gas supply or the internal valve that controls the fuel flow.
Your boiler is failing to light the gas or cannot stay lit, meaning you currently have no heating or hot water.
Your boiler is struggling to push water around your heating system, so it has safely shut down to prevent damage.
Your boiler is struggling to manage the water pressure in the system, which can cause it to stop working safely to prevent internal leaks.
Your boiler has stopped working because it can no longer accurately measure the temperature of the water flowing through your heating system.
Your boiler is struggling to detect the temperature of your hot water, which means it has stopped providing hot water to your taps and shower.
Your boiler is having trouble controlling the flow of hot water through your radiators, which means it has stopped heating to prevent potential damage.
Your boiler is struggling to detect the flow of water returning from your radiators, which prevents it from heating your home properly.
Your boiler has detected that the water pressure inside the system is dangerously high, causing a pressure relief valve to activate to prevent damage.
Your boiler has sensed it is getting too hot and has automatically shut down to prevent damage or safety issues.
Your boiler has built up too much internal water pressure and is releasing it through a safety valve to prevent damage.
Your boiler has detected that the water pressure inside the system is too low and has switched itself off as a safety precaution.
Your boiler has detected that it is getting too cold and is running automatically for a short time to prevent the internal pipes from freezing.
BoilerFaultCodes