York Defrost Controls

Overview

The YORK 031-01975-000 is a defrost control board designed for heat pump systems. It manages the defrost cycle, signaling the system to temporarily reverse operation and clear ice buildup from the outdoor coil. Without reliable defrost control, a heat pump loses efficiency and risks compressor damage in cold-weather operation. This board is a direct OEM-style replacement intended for installation by licensed HVAC technicians during routine service or system repair. This defrost control board is suited for residential heat pump applications where outdoor coil icing is a recurring service issue in heating season. It fits into the control circuit of the outdoor unit and works with the system's existing defrost sensors and reversing valve. Technicians replacing a failed or suspect defrost board will find this a straightforward swap in compatible YORK outdoor units. Key Features Controls defrost cycle timing and initiation for heat pump outdoor units OEM replacement board manufactured in the USA TAA/BAA compliant for applicable procurement requirements Sold individually as a single-unit package Compatibility Designed as an OEM-style replacement defrost control board for YORK heat pump outdoor units. Consult the unit service manual or YORK parts documentation to confirm fitment for a specific model before ordering. Installation Notes Installation should be performed by a licensed HVAC technician. Disconnect and lock out all power to the outdoor unit before removing the existing…