Enhanced Capacity Control: Enables the compressor to unload two cylinders per bank for better efficiency under partial loads

or power supply problem

and the white wire is normally open

021" orifice and the sparking electrode for intermittent systems

Does this motor require a run capacitor for installation

Carrier HK02ZB042 Pressure Switch 328140-751 Enhanced Capacity Control: Enables theThe Carrier HK02ZB042 Pressure Switch is a critical OEM safety component designed for precise monitoring of combustion air and venting pressure within high efficiency Carrier, Bryant, and Payne furnaces. Factory calibrated to 42# Open and 57# Close, this low pressure switch ensures the inducer motor is moving sufficient air to clear combustion byproducts before allowing the ignition sequence to proceed. It features a 36" lead and a durable diaphragm