Which component is typically responsible for fan motor operation in a gas furnace setup?

In a gas furnace setup, the control board plays a crucial role in regulating the operation of various components, including the fan motor. The control board acts as the brain of the furnace, managing signals from sensors and making decisions based on this data. When the furnace needs to operate the fan, whether for circulating warm air or for cooling during the off cycle, the control board sends the appropriate signals to activate the fan motor.

The control board processes inputs from thermostat settings, safety switches, and other sensors to determine when the fan should run. This centralized control allows for efficient operation, ensuring that the fan motor only runs when necessary, which helps to maintain temperature control and energy efficiency within the system. Understanding the function of the control board is essential for diagnosing issues with fan operation, making it a key component in gas furnace systems.