17 fault codes with plain-English explanations, severity ratings, DIY guidance, and repair cost estimates.
Replaced by: Baxi Solo / Baxi Megaflo System
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Your boiler has stopped working because it cannot light the internal flame or keep it burning.
Your boiler has detected that it is overheating and has automatically switched itself off to prevent damage.
Your boiler has detected that water is not circulating properly, most likely because the system pressure has dropped too low to operate safely.
Your boiler has stopped working because it is unable to accurately measure the temperature of the water being sent to your radiators.
Your boiler is struggling to breathe because the pipe that vents exhaust gases outside is blocked or faulty, meaning it cannot operate safely.
Your boiler has tried to start but could not ignite the flame, so it has shut itself off for safety.
Your boiler is failing to light the internal flame, which means it cannot produce any heat or hot water and has shut down as a safety precaution.
Your boiler has detected that it is overheating and has automatically switched itself off to prevent damage.
Your boiler is struggling to clear exhaust gases properly, which has caused it to stop working to ensure your home stays safe.
Your boiler has switched itself off because it has detected an issue with the water flow through your heating system, likely due to low water pressure or a stuck pump.
Your boiler is struggling to accurately measure the temperature of the water being sent to your taps, which is preventing it from heating your water correctly.
Your boiler has stopped working because it can no longer accurately read the temperature of the water being used for your heating.
Your boiler has become dangerously over-pressurised, meaning there is too much water inside the system which could cause leaking or internal damage.
Your boiler has lost the water pressure it needs to circulate heat, likely due to a minor leak or the system needing a top-up.
Your boiler has stopped working because there is either not enough water inside the system or an internal part that moves the water around has stopped running.
Your boiler has detected that it is getting too hot and has automatically switched itself off to prevent any damage or safety issues.
Your boiler is struggling to read its own temperature, so it has turned itself off to avoid heating the water incorrectly.
BoilerFaultCodes