Worcester Bosch Greenstar i Fault codes & diagnostics

Your boiler's internal computer is not communicating correctly with the main control systems, meaning the boiler has safely shut down to prevent damage.

Your boiler's internal computer is reporting that a piece of hardware is using software that doesn't match the rest of the unit, preventing it from functioning.

Your boiler is failing to ignite the flame needed to produce heat or hot water because it isn't detecting a successful start-up.

Your boiler's computer is having trouble reading the electricity supply coming from your home, which is causing it to lock itself to prevent damage.

Your boiler's computer module does not match the internal controller, meaning the system cannot communicate properly to provide heating or hot water.

Your boiler is struggling to detect that the flame is lit, so it has safely shut itself down to prevent wasting gas.

Your boiler's water pump is struggling to circulate water, which means the system cannot effectively move heat to your radiators or taps.

Your boiler's internal components are having trouble communicating with the main control board, preventing the system from starting up.

Your boiler's internal electronic 'brain' is not communicating correctly with the main control unit, preventing the system from operating.

Your boiler has lost communication with its external heating controls or room thermostat, meaning it cannot receive signals to turn the heating on or off.

Your boiler's internal computer brain cannot find its identity chip, which prevents it from operating safely.

Your boiler's main electronic brain has encountered a serious internal error and can no longer safely operate your heating or hot water.

Your boiler has stopped working because the mechanical fan responsible for pushing out exhaust gases has unexpectedly stopped while the unit was running.

Your boiler has detected that its exhaust fan has been running non-stop for the last day, so it has locked itself to prevent potential overheating or damage.

Your boiler's computer system has encountered a critical communication error and can no longer safely operate the heating or hot water, requiring professional repair.

Your boiler's fan is spinning faster than it should, which is preventing the system from safely managing the air and gas flow needed for heating.

Your boiler has detected that the internal exhaust fan is spinning faster than it safely should, causing it to automatically shut down to prevent damage.

Your boiler is struggling to push air through its system properly, which has forced it to shut down to stay safe.

Your boiler is unable to start up because the internal component responsible for moving air through the system is failing to engage.

Your boiler has stopped working because the mechanical fan that pushes waste gases outside is not spinning as expected.

Your boiler's temperature sensor is struggling to communicate with the main control board, which is preventing your heating from operating correctly.

Your boiler has stopped working because the internal pump that removes waste water is not functioning, causing a safety shutdown to prevent a leak.

Your boiler is getting too hot too quickly because the water inside isn't circulating properly, causing the system to shut down to prevent damage.

Your boiler has stopped working because the internal pump responsible for removing waste water has failed or is disconnected.

Your boiler has stopped working because a sensor that measures the water temperature is sending a faulty reading, forcing the system to shut down for safety.

Your boiler has lost its connection to the heat sensor, meaning it cannot tell how hot the water is and has safely shut down to prevent overheating.

Your boiler has stopped working because a sensor that measures the water temperature is reporting an impossible reading, preventing the unit from heating safely.

Your boiler has lost its connection to the component that measures the temperature of the water, so it has safely shut itself down to prevent overheating.

Your boiler has sensed that the water inside is getting too hot and has shut itself down to prevent damage.

Your boiler has detected that the water inside has become dangerously hot and has shut itself down to prevent damage.

Your boiler has tried to light several times but cannot detect a flame, meaning it has locked itself out for safety.

Your boiler is trying to start but the flame is failing to establish or stay lit, so it has shut down for safety.

Your boiler is trying to start but the flame is failing to light or stay lit, so it has shut down to keep you safe.

Your boiler has stopped because it can no longer detect the flame used to heat your water.

Your boiler's main internal computer is failing to communicate properly, which has caused the system to shut down for safety.

Your boiler has detected an internal software or electronic communication error that prevents it from operating safely.

Your boiler is unable to safely control the gas flame, so it has shut itself down to prevent any risk of a gas leak.

Your boiler's main computer brain has detected an internal failure and can no longer safely operate, meaning your heating and hot water will not work.

Your boiler's internal computer is failing to communicate correctly, meaning the system cannot safely operate your heating or hot water.

Your boiler has detected an internal electronic failure within its main brain, preventing it from operating safely.

Your boiler's internal computer is malfunctioning, meaning the system has safely shut down because it cannot correctly manage its heating and hot water functions.

Your boiler's main electronic brain is failing to communicate correctly, which has caused the system to shut down for safety.

Your boiler's internal computer has encountered a critical error preventing it from operating safely.

Your boiler's internal computer is experiencing a data processing error that prevents it from operating correctly.

Your boiler's electronic brain has encountered a serious internal error and can no longer communicate with the rest of the unit, meaning it has shut down for safety.

Your boiler has detected a critical failure in its internal electronic brain, meaning it has safely shut itself down and cannot operate until the hardware is repaired.

Your boiler thinks a flame is still burning even after it has been told to turn off, which is a safety conflict that stops the system from running.

Your boiler has detected an unexpected signal that suggests it might not be safely detecting when the flame is actually on or off, so it has locked itself out to prevent a potential hazard.

Your boiler has lost power while it was already trying to fix a separate error, so it is stuck in a confused state.

Your boiler thinks it can still see a flame even though it has told the gas to turn off, which is causing it to shut down for safety.

Your boiler has lost its connection to the water pump that circulates heat around your home, meaning it cannot safely provide heating or hot water.

Your boiler's internal computer brain is having trouble communicating with its power supply, preventing the system from starting up.

Your boiler has likely overheated because the gases exiting the system are too hot, causing a safety sensor to automatically shut it down.

Your boiler has lost all power and the display is completely blank because of an internal electrical failure.

Your boiler is making a loud banging or vibrating sound when it first tries to light, which usually means the gas and air isn't igniting smoothly.

Your boiler is struggling to start up its internal computer system and may have a blown fuse or a faulty control circuit.

Your boiler is struggling to breathe or burn gas correctly, which is causing unusual sounds and preventing it from heating your home efficiently.

Your boiler has sensed that the water inside has become dangerously hot and has shut itself down as a safety precaution.

Your hot water tank has reached an unsafely high temperature, and the boiler has shut down to prevent damage or scalding.

Your boiler has lost the vital communication link with its external controls or safety thermostat, meaning it cannot receive the signal to turn on.