46 fault codes with plain-English explanations, severity ratings, DIY guidance, and repair cost estimates.
Replaced by: ecoTEC Plus 832
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Your boiler has lost the signal from the sensor that monitors the water temperature, causing it to stop heating your home as a safety precaution.
Your boiler has lost its connection to a sensor that measures the water returning to the system, causing it to stop heating as a safety precaution.
Your boiler is struggling to detect the temperature of your hot water cylinder, meaning it may not heat your water up correctly.
Your boiler has stopped working because it is unable to accurately measure the temperature of the water inside the unit due to a faulty electrical sensor connection.
Your boiler is currently unable to read the temperature of the water coming back into the system, so it has turned itself off as a safety precaution.
Your boiler is struggling to accurately measure the temperature of the water inside your hot water cylinder because of a faulty connection or wiring issue.
Your boiler has detected an overheating issue and safely turned itself off to prevent damage to the system.
Your boiler has stopped working because the water pressure inside the system has dropped too low to operate safely.
Your boiler has switched itself off because the water it is heating is not flowing through your pipes fast enough, causing it to overheat in one specific area.
Your boiler has detected that the water inside is heating up far too quickly, so it has safely shut itself down to prevent damage.
Your boiler has automatically shut down because internal sensors detected that the waste gases are getting dangerously hot, which could indicate a serious ventilation or combustion issue.
Your boiler has detected an issue where it thinks a flame is present even when it should be turned off, so it has purposefully shut down to keep your home safe.
Your boiler is failing to start because it cannot light the gas flame needed to produce heat.
Your boiler has stopped because the flame inside has gone out and it is unable to restart itself.
Your boiler is unable to clear fumes properly because the internal fan is not spinning, so it has safely shut down to prevent any issues.
Your boiler is struggling to detect that the fan is pushing air through properly, so it has safely shut down to prevent it from operating incorrectly.
Your boiler is having trouble communicating with its external controls or sensors, which will prevent your heating and hot water from working properly.
Your boiler has detected an issue with the internal component that controls the gas supply, meaning it has safely shut itself down to prevent any risk.
Your boiler has detected a communication error with its internal gas control system and has shut down for your safety.
Your boiler's internal computer is experiencing a memory error, meaning it has lost its settings and cannot safely manage the heating process.
Your boiler's computer has detected an internal communication error or a faulty temperature sensor, causing it to shut down to prevent incorrect operation.
The main computer inside your boiler is overheating, causing the system to shut down to prevent damage to its internal electronics.
Your boiler has detected an issue with how the flame is being monitored, so it has shut down to keep your home safe.
Your boiler’s internal computer has lost its configuration settings, meaning it no longer recognises itself correctly.
Your boiler has stopped working because it is unable to accurately measure the temperature of the water being heated inside the system.
Your boiler is struggling to accurately measure the temperature of the water flowing through it, so it has stopped heating to prevent potential damage.
Your boiler is struggling to accurately detect the water pressure inside the system because the sensor is sending an incorrect or missing signal.
Your boiler's electronic sensor is receiving an incorrect reading, which is stopping it from safely operating and providing heating or hot water.
Your boiler is not detecting the necessary water movement to heat your home, which is likely caused by a blocked pump or a faulty pressure sensor.
Your boiler has detected an issue with an external accessory, such as the condensate drainage pump or the ventilation system, which is preventing it from running safely.
Your boiler is struggling to detect consistent water temperatures, meaning it cannot properly manage its internal heating cycle.
Your boiler is struggling because it detects an unusual temperature difference between the water leaving and returning to the unit, suggesting an issue with heat circulation or sensor accuracy.
Your boiler has detected that two of its water temperature sensors appear to be mixed up, preventing it from safely monitoring the heating system.
Your boiler is struggling to detect water moving through the system properly, which is preventing it from safely starting up.
Your boiler is currently running a brief, automated internal test to check its maximum heating capacity and is not showing a fault.
Your boiler is currently running a brief automatic testing sequence to verify its performance at low power, which is a normal part of its maintenance routine.
Your boiler is operating normally and is currently firing up to provide heat to your radiators.
Your boiler is currently heating up the water stored in your hot water cylinder, which is a normal part of its operation.
Your boiler has detected a blockage in its exhaust system or a problem with the device that drains away water, so it has stopped working to keep your home safe.
Your boiler has detected that water is not circulating properly through your radiators or pipes, and it has temporarily paused to prevent overheating.
Your boiler has temporarily stopped working because it has detected that the water pressure inside the system is too low.
Your boiler is currently taking a short break because it cannot detect enough water flowing through the system to heat it up safely.
Your boiler is currently performing a brief automatic safety test on its internal sensors and will resume normal operation once this check is complete.
Your boiler is currently running a quick self-check on its internal sensors and has temporarily paused heating to ensure everything is working correctly.
Your boiler is currently running an internal self-check to ensure its sensors are working correctly, so it has temporarily paused your heating.
Your boiler is currently running an automatic air-purging cycle to remove trapped air bubbles from the system, which is a normal part of its internal operation.
BoilerFaultCodes