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If the pressure switch fails to stay closed despite a clear flue
As a veteran-grade HVAC blower housing
Nordyne 1006719R 208-230V 1/3HP 1050RPM Motor
Use all new components provided in the kit to ensure proper gas valve modulation and leak-free operation
or if you measure infinite resistance (OL) across the coil
Lennox 17F50 Header Box Kit 321702-401 If the pressure switch failsThe Lennox 17F50 Cold End Header Box Kit is a critical OEM replacement part designed for high efficiency 90% AFUE and above condensing gas furnaces. As a primary collector box assembly, this kit manages the corrosive condensate generated during the heat exchange process, preventing fluid backup that can lead to pressure switch trips and furnace lockout. This heavy duty header box kit (Lennox 619598 46) is engineered for a precise fit on EL296, ML195,