Lambert Lx 24 Fi Manual English Link

Heating Circuit Sensor Fault. The internal temperature sensor is sending an incorrect signal.

Ignition Failure. This usually means the gas supply is interrupted or the ignition electrode is dirty. Check that your gas meter is on and hit "Reset." Lambert Lx 24 Fi Manual English

The boiler requires a specific water pressure to operate. Check the digital display or the analog gauge. It should sit between 1.0 and 1.5 bar when cold. If it falls below 0.5 bar, locate the filling loop (usually a black plastic handle underneath the boiler) and turn it slowly until the pressure reaches the 1.2 bar mark. 2. Summer vs. Winter Mode Heating Circuit Sensor Fault

If the boiler stops working, the display will usually flash an alphanumeric code. Here are the most common codes found in the Lambert Lx manual: This usually means the gas supply is interrupted

Low Water Pressure. The system pressure has dropped too low. Refill using the filling loop as described above.

The Lx 24 Fi model is a "room sealed" (Fi) fan-assisted boiler, meaning it draws combustion air from outside and exhausts gases through a coaxial chimney system, making it safe for modern indoor installation. Key Technical Specifications