If you are reading intermittent resistance or the unit fails to communicate with the coil assembly

Direct OEM Compatibility: Engineered specifically for Lochinvar KHN/WHN models ranging from 199

If you have 24V at the valve but no gas flow at the outlet

Most failures occur due to cracks from thermal cycling or chemical corrosion over time

Its open construction and compact

York S1-324-36073-549 Motor 320720-756 If you are reading intermittentThe York S1 324 36073 549 Motor is a precision engineered 1 2 HP ECM blower motor designed to meet the rigorous demands of modern HVAC systems. Operating on a versatile 120 240V single phase power supply, this programmable EON ECM motor utilizes advanced brushless DC technology to maintain constant airflow against varying static pressures. As a direct OEM York replacement part, it ensures seamless integration with existing control boards and blower