Alpha E-Tec Plus NX Fault codes & diagnostics

Your boiler is trying to start up but cannot light the gas or detect a flame, causing the system to shut down for safety.

Your boiler has switched itself off for safety because it has become too hot inside, likely due to a circulation blockage or a pump failure.

Your boiler has shut down because the exhaust gases have become too hot, which is a safety measure to prevent damage to the flue and internal components.

Your boiler has lost its electrical connection to the gas supply valve, meaning it cannot light the flame to provide heating or hot water.

Your boiler has detected a problem with the internal sensor that monitors the temperature of the water heading to your radiators, preventing it from heating your home safely.

Your boiler has been manually reset too many times in a short period and has now locked itself out for safety.

Your boiler has detected that the water pressure in the central heating system is too low to run safely.

Your boiler's internal computer settings do not match the way the pipes and pumps are physically set up, meaning the system doesn't know how to move water correctly.

Your boiler has stopped working because the fan is not communicating correctly with the main control board, preventing the system from clearing waste gases safely.

Your boiler thinks it sees a flame even though it hasn't actually started the ignition process yet.

The boiler has detected that a temperature sensor is not reading correctly, which usually means the system cannot accurately monitor the water returning to the unit.

Your boiler is struggling to pump water around your heating system effectively, which means it has stopped working to prevent itself from overheating.

Your boiler has identified an issue with the sensor that monitors exhaust gases, and it has shut down for safety to prevent damage.

Your boiler has lost the digital connection between its main control board and its internal components, meaning it cannot talk to itself to safely start up.

Your boiler is struggling because it is not receiving the correct amount of electrical power from your home's mains supply.

Your boiler has attempted to light the gas flame but failed, meaning it has safely shut down to prevent gas from escaping.

Your boiler has stopped working because it cannot detect a flame, meaning it is currently unable to safely heat your home or provide hot water.

Your boiler has detected an issue with how it manages its internal gas supply and has safely shut down to prevent potential damage or unsafe operation.

Your boiler is struggling to circulate water properly, causing the system to overheat because the heat isn't being moved away from the unit fast enough.

Your boiler has detected that it is running too hot or that an external safety device has tripped, so it has automatically shut down to prevent damage.

Your boiler is struggling to detect the flow of water through the system, which means it cannot safely heat your water or radiators.

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 through your heating system, so it has safely shut down to prevent overheating.

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.