Description
The York S1-373-23870-001 Defrost Control Kit is a genuine OEM replacement component engineered specifically for compatible York heat pump systems. Designed to restore and maintain proper defrost cycle operation, this kit helps ensure your heat pump runs efficiently throughout the heating season — even in cold, frost-prone conditions.
Why Defrost Control Matters
In heat pump operation, frost and ice can accumulate on the outdoor coil during cold weather, reducing system efficiency and potentially causing equipment damage. The defrost control board monitors coil conditions and initiates timed or demand-based defrost cycles to keep the outdoor unit clear and operating at peak performance. A faulty defrost control can result in excessive ice buildup, reduced heating capacity, and increased energy consumption.
Product Highlights
- Genuine York OEM replacement defrost control kit
- Engineered for precise compatibility with select York heat pump models
- Restores proper defrost cycle initiation and termination
- Helps prevent ice accumulation on the outdoor coil
- Supports reliable heating performance in cold-weather conditions
- Direct drop-in replacement for simplified installation
Application
This defrost control kit is intended for use in York heat pump systems where the original defrost control has failed or is performing erratically. Always verify compatibility with your specific unit model number before installation. Refer to the equipment service manual for wiring diagrams and installation instructions.
Installation Notes
- Disconnect all power to the unit before beginning installation
- Match all wiring connections to the original control configuration
- Consult a qualified HVAC technician for proper diagnosis and installation









