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The YORK 3103747000 is an OEM electronic expansion valve (EXV) control board designed to manage refrigerant metering in HVAC systems that use electronic expansion valves. This board governs the initiation and shut-down of key system functions, coordinating valve operation to maintain precise refrigerant flow and system efficiency. At 4.65 inches long, 3.05 inches wide, and 1.5 inches tall, it is a compact, direct-replacement board suited for installation in tight equipment spaces. Licensed HVAC technicians are the primary installers of this component.
This control board is intended for use in HVAC systems equipped with electronic expansion valves. EXV control boards are typically found in split-system and packaged equipment where variable refrigerant metering is required for efficient capacity control. The board coordinates with system sensors and the main unit controller to modulate the expansion valve position in response to changing load conditions. Consult the unit wiring diagram and service manual to confirm board location and connector assignments before installation.
Designed as an OEM-style replacement for YORK HVAC equipment utilizing electronic expansion valve control boards. Consult the equipment service manual or YORK parts documentation to confirm fitment for the specific unit model and serial number.
Installation should be performed by a licensed HVAC technician. Disconnect all power to the unit at the disconnect switch and verify the circuit is de-energized with a multimeter before handling the control board. Follow the unit wiring diagram for all connector placements. Refrigerant handling during related service must comply with EPA Section 608 regulations.
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