Description
The York S1-031-03884-000 2-Stage Circuit Board W/PWM Control is an electronic regulating board designed to control multi-stage operation and output modulation in HVAC systems. This printed circuit board takes low-voltage inputs via thermostats and sensors and pulse-width modulation is used to turn on and off stages of heating or cooling equipment in response to demand. It is installed in furnaces, air handlers or packaged units and it switches compressor and blower action between two different stages and controls fan speed or damper actuation where needed.
