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a specific regulator spring kit must be used
3mm) spade terminals for a secure fit in the electrical housing
If the coil is burnt out
Precise Fan Cycling: Maintains stable head pressure to prevent evaporator icing and ensure consistent expansion valve performance
Lennox 17F50 Header Box Kit 320074-702 a specific regulator spring kitThe 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,
