Trane SWT1271 Limit Switch and electric heating systems that

and electric heating systems that do not require fan control from the thermostat

extending the service life of the entire drive assembly

and resistive heating applications

While it fits many universal Danfoss valve bodies

Trane SWT1271 Limit Switch and electric heating systems thatThe Trane SWT1271 is a critical furnace high limit switch designed for HVAC system diagnostics and thermal protection. As a standard OEM replacement part, this auto reset limit switch prevents the heat exchanger from reaching a hazardous open temperature of 180F, cutting off power to the gas valve until the unit cools to its 150F reset point. For technicians troubleshooting furnace short cycling or 4 flash error codes on a Trane or American Standard