White-Rodgers 47D40-801 Heat Pump Defrost Demand Control Board, Replacement for Rheem TUV-APCO-DER2 Carrier: TP-CON-2/24/30 Mars: 17325 Mars:

Carrier: TP-CON-2/24/30 Mars: 17325 Mars: 91221 Mars: 91321 Supco: DP30242 Honeywell: DP2030A1003 Hartland Controls: HCCY2XQ02AA303 Cutler-Hammer: C25BNB230T Siemens: 45EG20AJ HD Supply: 252013

Overall Height:  14'' (35

An insulated

Fluke 117 - User's Manual

White-Rodgers 47D40-801 Heat Pump Defrost Demand Control Board, Replacement for Rheem TUV-APCO-DER2 Carrier: TP-CON-2/24/30 Mars: 17325 Mars:White 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