normally closed (N/C) piloted diaphragm unit

provided the coil voltage and pole count match the original HVAC contactor specifications

Broad Compatibility: Genuine Lennox replacement part designed for a wide range of natural gas furnaces and boilers

Confirm the bore size matches your motor shaft and cross-reference the 106938 part number with the data plate on your unit heater cabinet

Soft Start Technology: Reduces peak amperage draw and minimizes duct noise during startup cycles

Heat Controller 17120300000527 Main Board 322057-301 normally closed (N/C) piloted diaphragmThe Heat Controller 17120300000527 Main Board is an essential OEM replacement component designed to manage the core operational logic of compatible HVAC systems. As a primary HVAC control board, this unit facilitates seamless communication between the thermostat inputs, compressor performance, and blower motor stages. For technicians troubleshooting a non responsive condenser or erratic fan cycling, installing a genuine 17120300000527 midea main