Always verify your specific model number to ensure the terminal configuration matches your internal wiring

Smith ATI-540H (indoor) and ATO-540H (outdoor) configurations

Is the shaft rotation reversible

This OEM replacement part is built for direct compatibility with York rooftop units and residential furnaces

Common Questions: What causes a solenoid coil to burn out in HVACR systems

Lochinvar & A.O. Smith 100110984 Pilot Assembly 319825-402 Always verify your specific modelThe Lochinvar & A. O. Smith 100110984 Pilot Assembly is a high performance OEM replacement designed for natural gas heating systems, specifically optimized for commercial and residential water heaters and boilers. This natural gas pilot assembly features a precision engineered pilot burner and an integrated thermocouple to ensure consistent flame sensing and reliable ignition cycles. As a direct OEM replacement part, it is the updated successor to the