Lennox Industries Inc.

Sean Nicholas Lopes

Palanivel Subramaniam

A method includes entering a blower monitoring mode for a blower of a heating, ventilation, and air conditioning (HVAC) system. A torque applied to a blower wheel of the blower is determined based on an electrical current and an electrical voltage provided to a motor of the blower. In response to determining that the torque is greater than or equal to a torque threshold, a speed of the blower wheel is determined based on the electrical current and the electrical voltage provided to the motor. In response to determining that the speed is less than a speed threshold, a time that passed since both the torque reached the torque threshold and the speed was identified as being less than the speed threshold is determined. In response to determining that the time is greater than or equal to the time threshold, the method determines that the blower wheel is loose.

Growing community of inventors

Dallas, TX, United States of America

Sean Nicholas Lopes