Use a multimeter to check for 120VAC at the primary side and 24VAC at the secondary

Industry Standard Design: Robust J992 style assembly with a left-hand hood orientation for optimized airflow and flame stability

Is surface heat normal during operation

Most residential tanks are tested to 300 PSI but rated for 150 PSI operation

Trane SWT3623 Cut Out 322838-754 Use a multimeter to checkThe Trane SWT3623 Low Pressure Cut Out is a critical safety control designed specifically for high efficiency refrigeration and air conditioning circuits. This OEM Trane pressure switch functions as a fail safe, stopping the compressor when suction pressure drops below the 250 PSI open setpoint. By monitoring refrigerant levels, it prevents the compressor from operating in a vacuum or under lubricated conditions, which typically lead to motor burnout.