What is the function of an ignition board in a furnace?

The ignition board in a furnace plays a crucial role in the ignition process, serving specifically to initiate the spark for ignition. This component is essential for starting the combustion process by generating the necessary spark to ignite the gas that is fed into the burner.

When there is a call for heat, the ignition board receives signals from the thermostat and other safety devices. It then activates the ignition system, which can either be a hot surface igniter or a spark igniter, depending on the furnace design. The ignition board ensures that the gas flows appropriately and quickly generates a spark at the right moment, ensuring efficient and safe ignition.

Understanding the function of the ignition board highlights its importance in the overall operation of a gas furnace. Properly functioning ignition boards are crucial for safe furnace operation, as they help prevent gas build-up and potential hazardous situations that can arise from delayed ignition.