Worcester Bosch Greenstar R29 40 HE Fault codes & diagnostics

Your boiler has shut down because it is getting too hot and cannot circulate the heat through your radiators effectively.

Your boiler is struggling to detect the flame needed to heat your home, so it has safely shut itself down to prevent any gas build-up.

Your boiler is failing to light the flame, which means your heating and hot water have stopped working.

Your boiler's electronic control system responsible for safely lighting the gas flame has developed a fault and cannot start the heating process.

Your boiler has stopped working because an internal safety fuse has tripped to protect its electrical system from an unexpected power surge or short circuit.

Your boiler has detected an issue with the sensor used to monitor the temperature of the water leaving your boiler, meaning it cannot accurately control its own heating process.

Your boiler is struggling to accurately measure the temperature of the water it is heating, which means you will likely have no hot water until it is fixed.

Your boiler's internal electronic controls have lost their connection, preventing the heating and hot water from operating correctly.

Your boiler's computer is failing to communicate with its internal control panel, meaning the system cannot safely operate.

Your boiler has lost its connection to an internal system component, meaning it cannot properly communicate with its own controls to function.

Your boiler is struggling because the internal air circulation fan is not spinning fast enough to allow the boiler to fire up safely.

Your boiler's fan is stuck running continuously, which wastes energy and prevents the boiler from starting correctly.

Your boiler has detected that the internal exhaust fan is spinning faster than it should, causing the system to stop working to keep your home safe.

Your boiler has lost the connection to a sensor that measures the temperature of the water returning from your heating system, so it has safely paused operation.

Your boiler is failing to start because it is not receiving a signal from your thermostat or internal control link to turn on the heating.

Your boiler's internal thermometer is not sending a signal, so the system is shutting down to prevent overheating because it doesn't know how hot the water is.

Your boiler has detected that it is getting too hot and has automatically shut itself down to prevent any damage or safety issues.

Your boiler is trying to start but the flame is failing to light or stay on, so it has shut down as a safety precaution.

Your boiler's computer system has encountered a critical internal error and can no longer safely control your heating or hot water.

Your boiler is struggling to complete its initial safety check, causing it to repeatedly cycle and restart rather than firing up properly.

Your boiler has detected an internal computer error that is preventing it from starting up correctly.

Your boiler has stopped working for safety reasons and needs to be manually reset to clear the internal lock-out.