Trane SWT2973 Pressure Switch 324846-701 recurring furnace lockout usually indicates

recurring furnace lockout usually indicates the flame sensor probe requires replacement to ensure signal integrity

it provides the necessary surface area for efficient collection during peak latent cooling loads

The standard 121L1726/120U1726 package typically excludes the crankcase heater

As a veteran-grade HVAC variable frequency drive interface

High-Torque Output: Optimized gear ratio for handling high-viscosity products and preventing auger stall

Trane SWT2973 Pressure Switch 324846-701 recurring furnace lockout usually indicatesThe Trane SWT2973 Pressure Switch is an essential OEM safety component designed for precise draft monitoring in Trane and American Standard gas furnaces. Engineered for a 24V control circuit, this high performance sensor ensures the inducer motor establishes a proper vacuum before allowing the ignition sequence to proceed. It features a critical setpoint configuration, precisely calibrated to open at 1. 33" WC and close at 1. 52" WC, preventing unsafe