This fan pressure switch (often identified by Wilspec HC400-809-0031) provides precise electrical circuit activation based on system load

While functionally similar to other 240-degree switches

System Safety: Crucial for maintaining the air-fuel ratio by preventing unmetered air from entering the combustion chamber

Designed with internal check valves

Technicians should verify the pressure with a manometer and check for continuity across the terminals once the inducer reaches speed

York S1-032-00176-001 Drain Pan Els PW 17895 This fan pressure switch (oftenThe York S1 032 00176 001 Horizontal Condensate Drain Pan is a critical genuine OEM replacement part engineered for high capacity 4 and 5 ton York HVAC systems. This horizontal condensate drain pan is the direct replacement for S1 032 00176 000, featuring a precise fit for F4FP series fan coil units, including models F4FP045H06T2CH, F4FP048H06T2CH, and F4FP060H06T2CH. Constructed from galvanized steel to resist corrosion and structural fatigue, this