Before replacing the Lennox 96W66 board

This differential air pressure switch is designed to detect precise changes in airflow

the HH core is specifically optimized for wax removal and acid cleanup following a burnout or in low-temp systems

Fail-Safe Operation: Mechanical spring return ensures the damper shaft retracts safely during air pressure failure

and refrigerant leaks

Mitsubishi Electric R01E22114 Fan Wheel Freon Before replacing the Lennox 96W66The Mitsubishi Electric R01E22114 Fan Wheel is a critical Genuine OEM Replacement Part engineered for high performance mini split indoor units. As a precision balanced crossflow fan blower wheel, it is designed to restore factory standard static pressure and CFM output in specific Mitsubishi wall mounted evaporators. This component is essential for eliminating vibration, reducing bearing wear on the blower motor, and maintaining the aerodynamic