A process for controlling a combustion air delivery system of an oil fryer, the process comprising: (i) activating the combustion air delivery system; (ii) determining if a current target RPM is able to activate an air pressure sensing switch of the combustion air delivery system; (iii) if the current target RPM is able to activate the air pressure sensing switch, then a heating controller uses the current target RPM for heating; and (iv) if the current target RPM is not able to activate the air pressure sensing switch due to fan filter clogging or any other reduction in air supply in the combustion air delivery system, then the process for controlling the combustion air deliver system will conduct an initial calibration sequence to determine a new higher target RPM which will increase the air supply in the combustion air deliver system.

Embodiments of the disclosure describe a method and a system for controlling an operation of an inducer motor of a furnace system. The method includes receiving an input comprising one or more of experimental data, field test data, and operational information associated with the furnace system along with associated environmental condition data. The method also include establishing a relationship associated with torque signals and motor speed of the inducer motor to a precise airflow rate based on the received input. The method further includes controlling the operation of the inducer motor based at least on the established relationship and a required mass flow rate of the air in the furnace system.