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vibration-free connection to the motor shaft
Natural Gas Optimization: Specifically calibrated for natural gas flow rates to stabilize the pilot flame across varying pressure levels
this indicates a restricted vent pipe
or a multimeter reading showing an open circuit (infinite resistance) across the connector pins
Lennox 81W03 Control Board Els PW 17895 vibration-free connection to the motorThe Lennox 81W03 Control Board is the direct OEM replacement for the Lennox 17W70, 17W7001, and 81W0301 ignition control boards. As the central logic for your furnace, this integrated furnace control manages critical sequences, including hot surface ignition, flame sensing, and blower motor timing. It is engineered specifically for use in high efficiency units such as the Lennox G40, G43, and ML180 ML193 series. When performing a field replacement,
