Technicians should look for audible air hissing (leaks)

the Carrier HA42CZ232 Fan Motor is the precise OEM solution required to restore factory-spec airflow

many technicians pair these with Yellow Jacket 18975 or 19302 compact ball valves

As a triple pole double throw relay

the 318172-701 is the individual burner tube

Trane SWT1615 Rocker Switch 328140-751 Technicians should look for audibleThe Trane SWT1615 Rocker Switch is a heavy duty DPST (Double Pole Single Throw) control component designed for reliable HVAC circuit switching in demanding commercial and industrial environments. This On Off rocker switch serves as a direct replacement for various Trane and American Standard air handling units and packaged systems where a 4 terminal configuration is required to break both legs of a circuit. Engineered to handle high amperage startup