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This heat pump defrost board integrates seamlessly with existing wiring harnesses using standard 1/4-inch quick-connect terminals
Enhanced Connectivity: Specifically designed to support Carrier deluxe thermostats for reliable communication and system control
It features a straight-through body pattern with an adjustable servo regulator to maintain consistent manifold pressure
including Century JA2R247 and GE 5KSP11 series units
Resideo R8228B1012 Relay 321894-709 This heat pump defrost boardThe Resideo R8228B1012 Relay is a field proven heavy duty switching relay engineered to handle demanding electrical loads in refrigeration, air conditioning, and industrial heating applications. This 24Vac coil switching relay features a Single Pole Double Throw (SPDT) configuration, providing reliable logic for both normally open and normally closed circuits. It serves as the direct R8228B1012 HN61KA016 replacement, facilitating a seamless upgrade