or a failing blower motor before concluding the switch itself is defective

This 24V coil contactor serves as an essential switching mechanism

reducing the need to carry multiple single-voltage units on the truck

Whether you are performing routine maintenance or troubleshooting a "no heat" call

Trane SWT1612 Limit Switch or a failing blower motorThe Trane SWT1612 Limit Switch is a critical safety component designed for heavy duty thermal regulation in high efficiency furnace applications. This OEM Trane replacement part features a precise 160 190F temperature profile, engineered to open the electrical circuit at 190F to prevent heat exchanger damage and automatically reset (close) once the plenum temperature cools to 160F. Built with a 3 inch insert probe, this switch ensures accurate sensing