Technicians should note that this integrated furnace control features a diagnostic LED for rapid troubleshooting of system faults

As a critical component for Reznor gas conversion and maintenance

If the motor is seized or pulling high amps

If the vacuum breaker is constantly weeping from the atmospheric vent or fails to close during pressurized flow

ensuring long-term seat tight integrity

Trane SWT2979 Pressure Switch 318973-401 Technicians should note that thisThe Trane SWT2979 Pressure Switch is a critical safety component designed for precise draft monitoring in high efficiency Trane and American Standard furnaces. As a OEM dual pressure switch, this part is the direct replacement for legacy part numbers BA20149 and C342634P62. This 2 stage air pressure switch features a dual diaphragm configuration engineered to sense specific vacuum thresholds: the high side is rated to open at 1. 93" W. C. and close at