Vaillant Turbomax Plus Fault codes & diagnostics

Your boiler has stopped working because the water pressure inside the heating system has dropped too low.

Your boiler has stopped working because it can no longer accurately read the temperature of the water flowing through the heating system.

Your boiler has stopped working because it cannot accurately measure the temperature of the water returning to it, likely due to a loose wire or a faulty sensor.

Your boiler has detected an electrical fault with the sensor that measures the temperature of the water flowing to your radiators, meaning it has shut down as a precaution to prevent overheating.

Your boiler has detected an electrical fault with the sensor that monitors the temperature of the water returning from your radiators, meaning it has safely shut down to prevent potential overheating.

Your boiler has automatically turned itself off because it has become dangerously hot and needs to cool down to prevent internal damage.

Your boiler has detected that there is either not enough water inside the system or that the pump responsible for moving water around is not working properly.

Your boiler has detected that water is not circulating correctly, which has triggered a safety shut-down to prevent the system from overheating.

Your boiler has detected that it is not heating the water correctly because it is struggling to move it through the system properly.

Your boiler has detected an internal electrical problem preventing it from safely opening the gas supply, meaning it cannot ignite to produce heat or hot water.

Your boiler is failing to light the flame, which means it has safely shut itself down because it cannot start the heating process.

Your boiler is failing to light because it cannot get enough gas to produce a steady flame.

Your boiler has detected that the internal fan is not spinning at the correct speed to safely vent exhaust gases, so it has stopped working to prevent damage.

Your boiler has detected an issue with the air or exhaust flow needed to run safely and has shut down to protect itself.

Your boiler is struggling to clear exhaust fumes or draw in fresh air properly, so it has safely shut down to prevent unsafe operation.

Your boiler has lost its internal electronic memory regarding the type of gas being used, which prevents it from starting up safely.

Your boiler is having trouble communicating with its internal electrical wiring, which is preventing it from starting up reliably.

Your boiler has detected a problem with its internal wiring connections, meaning it cannot communicate correctly to operate safely.

Your boiler’s internal computer system has encountered a critical electronic error that is preventing it from safely operating.

Your boiler has detected an internal communication error and has safely shut itself down to prevent further damage.

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

Your boiler has detected an internal computer or sensor error, which has caused it to shut down for safety reasons.

Your boiler has detected that its internal control computer is overheating, which may be caused by an electrical wiring issue or a faulty component.

Your boiler's electronic control panel is struggling to communicate with the main system, preventing it from operating correctly.

Your boiler's internal computer has encountered a critical error processing information, preventing it from functioning safely.