White-Rodgers 47D40-801 Heat Pump Defrost Demand Control Board, Replacement for Rheem WRSX Won’t Wander & Drills Faster

Won’t Wander & Drills Faster than the Competition

built-in magnetic mount and a large easy-to-read display

4 - 113 kg)

Fieldpiece SOX3 Combustion Checker with Auto Pump

Stainless steel retainer adds strength  and durability

White-Rodgers 47D40-801 Heat Pump Defrost Demand Control Board, Replacement for Rheem WRSX Won’t Wander & Drills FasterWhite Rodgers 47D40 801 Heat Pump Defrost Demand Control Board, Replacement for Rheem The 47D40 801 control is a microprocessor based demand defrost controller intended for Rheem heat pump systems. This controller uses basic differential temperature means to detect degradation of system performance due to ice build up on the outdoor coil. The controller uses self calibrating principles to calibrate to the heat pump system. The defrosting is performed