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

The assembly features a 3/16 inch x 8-5/8 inch sensing bulb and a durable 48-inch capillary tube

providing flexibility for diverse job sites

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

Broad Operating Range: Supports a temperature span of -30°F to 90°F

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