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The main board serves as the brain of your boiler or burner, controlling ignition, temperature regulation, safety functions, and overall operation. When this electronic component malfunctions, your heating system may fail to start, run inefficiently, or display error codes. Replacing the main board with a compatible unit can restore full functionality and extend the life of your equipment. This board is a critical spare part for technicians and homeowners alike, ensuring that all system commands are processed correctly for safe and efficient heating.