you must replace your old 2-wire thermostat and potentially pull new thermostat wire to utilize this control board kit

Which actuators work with this valve body

or if contacts remain closed after the 24V signal is removed and the cool-down period has passed

leading to dangerous ignition sequences or system failure

though actual capacity varies based on the specific spring range and gas type used

Lennox Y9894 Control Board Refrigerant you must replace your oldThe 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