23 fault codes with plain-English explanations, severity ratings, DIY guidance, and repair cost estimates.
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Your boiler is failing to light the internal flame, which means it cannot produce any heat or hot water.
Your boiler has detected that a flame is present even though it is not trying to heat your home or water, meaning it has shut down as a safety precaution.
Your boiler has detected that it is dangerously hot and has shut itself down to prevent any damage to the unit.
Your boiler has detected an issue with the internal ventilation system that pushes waste gases outside, so it has safely shut itself down to prevent operation.
Your boiler has detected an issue with the flame detection system, meaning it cannot reliably tell if the burner is lit, so it has safely shut itself down to prevent gas from escaping.
Your boiler is currently unable to talk to its internal gas control system, which means it cannot safely ignite or produce heat.
Your boiler's internal computer is experiencing a software glitch or communication error that is preventing it from operating correctly.
Your boiler's internal computer has encountered a glitch and can no longer safely manage the heating process.
Your boiler has failed to light the flame, so it has safely shut itself down to prevent a gas build-up.
Your boiler has stopped working because it cannot correctly track the temperature of the water moving through your heating system.
Your boiler has stopped working because it cannot correctly detect the temperature of the water being sent to your radiators, forcing it to shut down for safety.
Your boiler is experiencing electrical power issues because the electricity coming into your home is outside of the safe operating range for the unit's internal computer.
Your boiler has detected that the electricity supply from your home is not steady, which is preventing it from starting safely.
Your boiler's internal computer is experiencing a critical error and has stopped working to prevent further damage.
Your boiler has stopped working because the water pressure inside your heating system has dropped too low to operate safely.
Your boiler has lost communication with its outdoor temperature sensor, meaning it cannot automatically adjust your heating based on the weather.
Your boiler has detected that the water pressure inside your heating system is either too high or too low for it to operate safely.
Your boiler is struggling to accurately measure the water pressure inside the system, which is preventing it from heating your home safely.
Your boiler has lost the ability to accurately measure the temperature of the water returning to it, so it has shut down to prevent potential overheating.
Your boiler is struggling to accurately measure the temperature of the water returning to it, so it has stopped working to prevent potential overheating.
Your boiler has detected an issue with the sensor that monitors the temperature of the exhaust fumes, so it has safely shut down to prevent potential overheating.
Your boiler has detected an issue with the sensor that monitors the temperature of the gases leaving the flue, causing it to shut down for safety reasons.
Your boiler has lost its connection to the system that monitors water pressure, so it has safely shut down to prevent any damage.
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BoilerFaultCodes