This 110-230F Auto Limit Switch provides essential boiler high limit protection by monitoring internal temperatures and automatically breaking the electrical circuit if the system exceeds the calibrated threshold

Built with heavy-duty components to withstand high static pressure and corrosive flue gases

the LA660003 is specifically bored for 5/16" single flat shafts used in most residential inducer motors

the 903600 sensor is likely failng to send a microamp signal to the integrated furnace control

Solid-State Reliability: Optimized for industrial-grade performance with a vibration-resistant housing suited for high-torque HVAC environments

Trane BAYLPSS210B Conversion Kit 320788-704 This 110-230F Auto Limit SwitchAs a veteran tech, you know that field conversions require exact specs to ensure safety and combustion efficiency. The Trane BAYLPSS210B LP Conversion Kit is the specific OEM solution for transitioning natural gas furnaces to liquid propane (LP). Engineered for high efficiency 1 and 2 stage furnaces, this kit includes #56 propane orifices and the critical gas valve regulator spring required to calibrate manifold pressure. Using genuine Trane furnace