Rheem Furnace Parts 47-21776-86 Heat Pump Defrost Control Board

Heat Pump Defrost Control Board is a crucial Rheem furnace part designed for efficient defrost cycling in heat pump systems. This 47-21776-86 replacement component is built to work with common Rheem furnace parts and includes the Defrost Control Board, Limit Switch/Defrost Sensor, Wiring Diagram, and Instruction Sheet for a straightforward installation.

Designed to deliver reliable defrost timing, this board helps prevent ice buildup, maintaining warmth and energy efficiency during cold weather. It is a versatile replacement part — used on heat pump applications — offering a durable solution for ongoing system performance.

• Includes Defrost Control Board, Limit Switch/Defrost Sensor, Wiring Diagram, and Instruction Sheet
• Compatible with Rheem heat pump systems and standard furnace setups
• Reliable defrost timing to prevent icing and improve efficiency
• Clear wiring diagram and step-by-step instructions for easy installation

Order this Rheem furnace part today to restore optimum heat pump function and extend system life.