Nordyne 632547R Pressure Switch 318423-701 The York S1-031-03004-000 Defrost Control

The York S1-031-03004-000 Defrost Control Board is a critical OEM replacement component engineered for precision management of defrost cycles in residential and commercial heat pump systems

Known for its reliability in R-410A systems

Industrial Build Quality: Encapsulated coil and reinforced contact points designed to withstand the vibration of cabinet-mounted environments

It is specifically designed for LP (Liquid Propane) gas systems

The Watts 0559104 (Model LF1170-M2-UT) is a high-performance 3/4 inch thermostatic mixing valve designed for master mixing applications in potable water and radiant heating systems

Nordyne 632547R Pressure Switch 318423-701 The York S1-031-03004-000 Defrost ControlThe Nordyne 632547R Pressure Switch is a critical OEM furnace safety control engineered to monitor proper inducer motor draft and venting conditions in high efficiency heating systems. This SPST (Single Pole, Single Throw) switch is factory calibrated to a precise 0. 90" WC (Water Column) set point, ensuring the combustion process only initiates when safe airflow thresholds are met. As a genuine Nordyne replacement part, it eliminates the calibration