Description
The York S1-031-01976-000 Defrost Control Board is a genuine OEM replacement component engineered to restore and maintain precise defrost cycle operation in compatible York heat pump systems. Designed to meet original factory specifications, this board ensures your heat pump operates at peak efficiency by accurately sensing outdoor coil conditions and initiating defrost cycles only when needed — preventing ice buildup and protecting system performance even in the harshest winter conditions.
Key Features
- Genuine OEM York replacement defrost control board
- Engineered for direct, drop-in replacement in compatible York heat pump models
- Manages defrost cycle initiation and termination for optimal system efficiency
- Helps prevent coil icing and protects compressor integrity
- Built to original factory specifications for reliable, long-term performance
- Supports proper heat pump operation in cold-weather conditions
Why Choose an OEM Defrost Control Board?
Using a genuine York defrost control board ensures compatibility and reliability that aftermarket alternatives may not provide. The defrost control board is a critical component in any heat pump system — it monitors outdoor coil temperature and run time, then triggers the defrost cycle to clear ice accumulation. A faulty or incompatible board can lead to reduced heating capacity, compressor damage, and increased energy consumption. Replacing it with the correct OEM part restores factory-level performance and extends the life of your system.
Compatibility
- Designed for use in York heat pump systems requiring part number S1-031-01976-000
- Always verify compatibility with your unit’s model and serial number before installation
Installation Notes
- Installation should be performed by a qualified HVAC technician
- Disconnect power to the unit before servicing or replacing the control board
- Refer to the York service manual for wiring diagrams and installation instructions specific to your model









