or a complete lack of airflow while the control board calls for high-voltage output to the motor

Optimized 3000 RPM Operation: Provides the correct induction force required for mid-efficiency gas furnaces

always handle the ceramic base or use gloves

Field Adjustable: Features an external sensitivity screw to fine-tune flow switch actuation points based on specific application velocities

High Cycle Life: Forged brass body with chrome-plated stem and thermoplastic plug offers superior durability in fluid temperatures ranging from 32°F to 200°F

Trane SWT3971 Pressure Switch 323080-701 or a complete lack ofThe Trane SWT3971 Pressure Switch is an essential safety component engineered for induction monitoring in high efficiency Trane and American Standard furnaces. This SPST pressure switch (Single Pole Single Throw) is factory calibrated at a 1. 00" W. C. set point to ensure the inducer motor maintains the precise vacuum required for safe combustion and flue gas venting. As a 28VA pilot duty component, the SWT03971 effectively prevents the ignition cycle