James for Model Number LFXS30766S I have gotten error code r dH several times & have had frost buildup in the back of the fridge. I replaced the defrost sensor/fuse assembly in the fridge & checked that the heater is 110 ohms (within the 103 to 119 range as given in service manual). The frost returned after 2 months, causing the fridge and freezer to get warm - sensor, fuse, and heater resistances still seem fine. Fridge still gets cold after manually clearing the frost. I am starting to suspect something is wrong with the controller itself. Does that seem plausible?
Answer James, if the defrost heater, fuse, and sensor are testing properly, then based on the information provided the main control EBR78940615 would be the most likely failure. Read More... Answered by AppliancePartsPros.com | Wednesday, September 11, 2019