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114 DIA rod provides high sensitivity for accurate flame rectification measurements (microamps)
this indicates a restricted vent pipe
How often should the flame sensor be inspected
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 114 DIA rod provides highThe 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,
