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As a veteran-grade SPDT pressure switch
Set your multimeter to the Ohms (
specifically those utilizing the 331709-753 part number
preventing hazardous conditions caused by restricted venting or heat exchanger failure
Lennox Y9894 Control Board Els PW 17895 As a veteran-grade SPDT pressureThe Lennox Y9894 Control Board is a high performance integrated furnace control designed for precise ignition sequencing and fan motor regulation in Lennox G50 and G1 series gas furnaces. As a direct replacement ignition board, it consolidates multiple older revisions into a single, robust hardware platform. This 24V AC module manages the hot surface igniter (80V AC output), inducer motor, and blower operations with advanced logic to ensure efficient