Trane SWT3967 Rollout Switch 320819-301 a fouled or oxidized sensor

a fouled or oxidized sensor is the primary cause of intermittent 3-second shutdowns

000+ cycle performance with non-corrosive air media

these switches are typically position-sensitive

This assembly is rated for working pressures up to 175 psi and fluid temperatures between 33°F and 180°F

What is the significance of the 25-inch lead

Trane SWT3967 Rollout Switch 320819-301 a fouled or oxidized sensorThe Trane SWT3967 Rollout Switch is a critical safety component designed for furnace, boiler, and air handler applications. As a veteran grade 190F flame rollout switch, this device monitors the combustion area for abnormal thermal conditions, such as a cracked heat exchanger or blocked flue, which cause flames to roll out and threaten unit integrity. Featuring a manual reset button, this SPST (Single Pole Single Throw) safety limit provides high