Complete List of Fault Codes for Natural Gas Boiler Combustion Machines (Interpreting Common Fault Codes)

Natural gas boilers are a common heating equipment that can help people stay warm during winter. However, just like other equipment, natural gas boilers may also malfunction, which requires us to refer to the corresponding fault code for repair. The following is a complete list of fault codes for natural gas boiler combustion engines and their interpretation.

F0 Fault Code: Flame Loss

When the flame inside the natural gas boiler combustion engine is too low or disappears, the system will display an F0 fault code. This may be caused by insufficient natural gas transportation or the accumulation of dust, impurities, and other dirt. Cleaning the combustion engine and checking if the gas pipeline is blocked can usually solve this problem. If these measures are ineffective, it may be necessary to replace the combustion engine.

F1 fault code: ignition fault

When the natural gas boiler combustion engine is unable to ignite the flame, the system will display an F1 fault code. This is usually caused by a malfunction of the igniter or ignition electrode, and may also be due to blockage of the fan or ventilation duct. Cleaning ignition electrodes or replacing them, replacing non working parts, or clearing blockages are effective ways to solve this problem.

F2 fault code: Flame supply fault

When the natural gas boiler combustion engine cannot provide sufficient gas, the system will display an F2 fault code. This may be caused by blockage of gas pipes or dust and sediment. Cleaning the pipes and ensuring that they can flow freely may solve this problem. If the problem persists, pipeline replacement or major partial replacement may be necessary.

F3 fault code: Fan fault

When the fan of the natural gas boiler combustion machine cannot operate normally, the system will display an F3 fault code. Usually, this is caused by the motor not functioning properly. This may be caused by impurities, wear, or faulty fans. Replacing the fan can usually solve this problem.

F4 Fault Code: High Temperature Fault

When the temperature of the natural gas boiler combustion machine is too high, the system will display an F4 fault code. It may be caused by blockage in the combustion chamber, insufficient gas, ash accumulation in the heat exchanger, or malfunction. Replacing blocked parts or cleaning dust may solve the problem, but if the problem persists, it may be necessary to replace the heat exchanger or other faulty components.

F5 Fault Code: Sensor Fault

When the sensor of the natural gas boiler combustion machine malfunctions, the system will display an F5 fault code. This may be caused by sensor wear, damage, or loss of connection. Replacing sensors or reconnecting them is the solution to this problem.

In short, when we encounter a malfunction in the combustion engine of a natural gas boiler, we first need to check the fault code on the display screen. Then, referring to the fault codes and explanations provided in this article, the cause of the fault can be quickly determined and corresponding measures can be taken for maintenance.