47-21517-12- OEM Upgraded Heat Pump Defrost Control Circuit Board & Sensor

47-21517-16 - OEM Upgraded Heat Pump Defrost Control Circuit Board & Sensor

47-21517-11 - OEM Upgraded Defrost Control Circuit Board & Sensor Fits RHEEM

47-21517-18 - OEM Upgraded Heat Pump Defrost Control Circuit Board & Sensor

47-21517-14 - OEM Upgraded Heat Pump Defrost Control Circuit Board & Sensor

Rheem Ruud 47-102684-83 Defrost Control Circuit Board

OEM Upgraded Ruud Heat Pump Defrost Control Circuit Board & Sensor 47-21517-88

47-102684-01 - OEM Upgraded Heat Pump Defrost Control Circuit Board & Sensor