Installing the 510-811-644 replacement kit restores the proper millivolt signal to the gas valve

Enhanced Signal Integrity: Designed to deliver consistent microamp feedback even in high-static environments

reducing diagnostic time and potential board shorts

ensuring that the flue gases are properly venting before the ignition sequence initiates

and "L" Series float and thermostatic steam traps

York S1-025-38907-000 TXV Freon Installing the 510-811-644 replacement kitThe York S1 025 38907 000 is an OEM engineered 2 ton R 22 expansion valve designed for precise refrigerant metering in York, Luxaire, and Coleman residential evaporator coils. As a veteran grade HVAC thermostatic expansion valve, this component utilizes a 3 8" x 3 8" physical connection size to ensure seamless integration into existing liquid line configurations without the need for additional adapters. The integral 30 inch capillary tube provides the