19 fault codes with plain-English explanations, severity ratings, DIY guidance, and repair cost estimates.
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Your boiler is currently trying to figure out if it needs to heat up your tap water and is momentarily stuck in its internal start-up process.
Your boiler is struggling to detect that you have turned on a hot tap and is failing to trigger the heating process to warm your water.
Your boiler is struggling to detect or maintain a flow of hot water, causing it to pause its startup sequence.
Your boiler is struggling to detect or heat the water for your taps and is essentially stuck in a loop while trying to start the process.
Your boiler has detected that the water pressure inside the system is too low to operate safely.
Your boiler is struggling to confirm that the internal components are starting up correctly to heat your water, preventing it from functioning properly.
Your boiler is working normally and is simply adjusting its internal power levels to keep your water at the temperature you requested.
Your boiler has failed to light the flame, which means it cannot produce hot water or heating.
Your boiler is struggling to start the process of heating your tap water because it isn't receiving the correct signal that you have turned a hot tap on.
Your boiler's temperature sensor has stopped sending a clear signal, so it has shut down to prevent overheating.
Your boiler's flue sensor is detecting a fault, meaning the system cannot accurately monitor the temperature of the exhaust gases, so it has safely shut down to prevent damage.
Your boiler is struggling to detect the temperature of the water it is trying to heat, so it has shut down to prevent overheating.
Your boiler has detected that it has become dangerously hot and has automatically shut itself down to prevent damage.
Your boiler has stopped working because the water pressure inside the system has dropped too low to operate safely.
Your boiler has detected that water is not flowing properly around your heating system, so it has safely shut down to prevent overheating.
Your boiler has detected that the gases being produced are becoming too hot, so it has safely shut itself down to prevent damage.
Your boiler has stopped working because it cannot detect a flame or is not receiving a consistent supply of gas.
Your boiler has stopped working because the fan that helps push out exhaust gases is not communicating correctly or has lost power.
Your boiler is struggling to get water moving around the system correctly before it attempts to fire up.
BoilerFaultCodes