maintaining optimal boiler water level stability

15" WC pressure switch

This kit is primarily the assembly and switch

For oil applications

How do I confirm if the transformer is faulty

York S1-024-35738-000 Door Switch 320734-701 maintaining optimal boiler water levelThe York S1 024 35738 000 Door Switch is a critical safety interlock component engineered for high performance service in York, Coleman, and Luxaire gas furnaces and air handlers. As a veteran technician, you understand that a faulty furnace door switch is a frequent failure point that prevents the integrated furnace control (IFC) from receiving line voltage. This OEM interlock switch is designed to break the electrical circuit to the blower motor and