please let me know if and how you got this fixed. all i have been able to find is that "dH = "Defrost Cycle Malfunction"
DM, August 2007
Found it!!
Er / dH Failure of defrost mode: When defrost sensor doesn't reach 46f within 2 hours after starting defrost. Snapping of Defrost heater or Temperature fuse, pull out of connector.
D, August 2007
I have the same error on my refrigerator and am trying to figure it out. Have you been able to figure it out?