York Parts S1-33102957000 Heat Pump Defrost Control Board

Heat Pump Defrost Control Board for York Parts S1-33102957000 protects your heat pump’s defrost cycle and helps maintain efficient operation during cold weather. This replacement control board is designed as a direct, plug-in solution for heat pumps in the York/YZB family and is compatible with multiple YZB-specific part numbers, including YZB01811CA, YZB02411CA, YZB03011CA, and YZB03611CA. By precisely timing the defrost sequence, it prevents frost buildup, preserves airflow, and supports steady indoor comfort.

Designed for durability and stable performance under variable outdoor temperatures, this board supports efficient energy use and quicker defrost cycles.

• Direct replacement for York heat pumps in the YZB lineup
• Compatible with part numbers YZB01811CA, YZB02411CA, YZB03011CA, YZB03611CA
• Maintains reliable defrost timing to prevent ice and improve efficiency
• Built to withstand typical HVAC operating conditions for durable service

Ideal for technicians and homeowners seeking a dependable, long-lasting defrost control solution for York heat pumps.