Trane SWT1271 Limit Switch This replacement cartridge is a

This replacement cartridge is a critical service part for Type Q conventional port and Type BQ balanced port valve bodies

offering technicians a reliable point of isolation that resists vibration and thermal cycling

or the burner shutting off shortly after ignition

mixed gases

Trane SWT1271 Limit Switch This replacement cartridge is aThe 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