19 fault codes with plain-English explanations, severity ratings, DIY guidance, and repair cost estimates.
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Your boiler is currently running its internal water pump to clear out any leftover heat, which is a normal part of its cooling process.
Your boiler is operating normally and has successfully reached the desired temperature you set.
Your boiler is currently performing an internal electronic check to ensure all systems are safe to start up.
Your boiler has tried to light itself four times but failed to create a flame, causing the system to shut down for safety.
Your boiler has failed to light after several tries, often because the drainage pipe for waste water is blocked or there is a problem with the gas supply.
Your boiler is failing to sense a flame, meaning it cannot stay on safely to provide heating or hot water.
Your boiler has been forced to stop working because the internal fan is not spinning at the correct speed to safely clear waste gases.
Your boiler's internal temperature sensor has stopped sending the correct signal, which means the system cannot heat your water or radiators safely.
Your boiler has detected a problem with one of its internal temperature sensors, which means it cannot safely measure the heat of the water and has stopped working as a precaution.
Your boiler has stopped working because one of its internal heat sensors is reporting a fault or has a broken connection.
Your boiler has stopped working because one of its internal temperature sensors is providing an incorrect reading or has a faulty connection.
Your boiler has stopped working because one of its internal temperature sensors is providing an incorrect reading or has a faulty connection.
Your boiler has detected a fault with its temperature sensor, which prevents it from monitoring the water temperature correctly and usually results in the system shutting down for safety.
Your boiler has stopped working because a temperature sensor responsible for monitoring the internal water system has detected a fault or a broken connection.
Your boiler has stopped working because one of its internal temperature sensors has failed or has a loose connection.
Your boiler has detected a problem with one of its internal temperature sensors, meaning it cannot accurately monitor the water temperature and has stopped working for safety.
Your boiler has stopped working because one of its internal temperature sensors is providing an incorrect reading or has a faulty connection.
Your boiler's internal electronic control board has suffered a critical electrical failure and can no longer safely operate the gas supply.
Your boiler is struggling to detect the temperature of your hot water supply, which means it will likely stop providing hot water until the faulty sensor is fixed.
BoilerFaultCodes