Alpha E-Tec Plus 33NX Fault codes & diagnostics

Your boiler has failed to light its flame when asked to provide heating or hot water, and has safely locked itself out to prevent any issues.

Your boiler has detected that it is getting too hot and has automatically switched itself off to prevent any damage.

Your boiler has lost its electrical connection to the gas valve, meaning it cannot safely let gas in to heat your home.

Your boiler has detected an issue with the temperature monitoring on its central heating system and shut down for safety.

Your boiler is not producing hot water because it is having trouble reading the temperature from its hot water sensor.

Your boiler has locked itself out because too many reset attempts were made in a short space of time.

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

Your boiler has detected an issue with its internal electrical connections and has safely locked itself out to prevent any potential risks.

Your boiler has detected an issue with the internal fan that safely expels exhaust gases, so it has temporarily stopped working to keep your home safe.

Your boiler is temporarily locked out because it is getting a false signal that a flame is present when the burner is actually off.

Your boiler's control panel or buttons are not responding properly, which temporarily stops the system from working correctly.

Your boiler is temporarily shutting down because it is getting too hot inside due to not having enough water flowing through it.

Your boiler has detected an issue with the sensor that monitors the temperature and safety of the exhaust gases leaving your flue.

Your boiler has lost connection with its wall thermostat or remote control, which usually stops your heating and hot water from working properly.

Your boiler has lost internal communication between its main control parts, meaning it cannot properly coordinate heating or hot water.

Your boiler has detected that the incoming electricity supply voltage is too low to operate safely and correctly.

Your boiler is trying to light up and start burning gas, but the flame keeps going out unexpectedly.

Your boiler has temporarily stopped working because it keeps losing its internal flame, which usually points to a gas supply issue or a dirty sensor.

Your boiler has temporarily locked out because a safety check detected that the gas valve stayed open longer than expected without successfully igniting.

Your boiler has temporarily stopped working because it detected that the water inside got too hot.

Your boiler has detected that the water returning to it is too hot, so it has safely shut itself down to prevent damage.

Your boiler has detected that the internal pump, which moves water around your heating system, is stuck or struggling to rotate.

Your boiler has detected air trapped inside the pump, which is preventing water from circulating correctly and causing the system to stop working.

Your boiler is struggling to accurately measure the temperature of the water circulating inside it, which has caused it to stop heating your home as a safety precaution.

Your boiler is struggling to accurately monitor the temperature of the water circulating through your heating system, so it has shut down as a precaution to prevent overheating.

Your boiler's computer system has detected multiple internal software errors and has locked itself down to prevent any damage.