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Key Benefits: Independent Adjustment: Two separate sensing elements allow for fine-tuned control of high and low actuation points within a single HVAC pressure switch assembly
this indicates a restricted vent pipe
Designed to integrate seamlessly with PI (Intermittent Ignition) systems
Optimized Pitch: The 28-degree pitch provides the necessary lift to pull air through dense coil fins effectively
Lennox 81W03 Control Board Els PW 17895 Key Benefits: Independent Adjustment: TwoThe 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,
