Jeff P Austin , TX January 20, 2017 Er dh code Kept getting the ER DH code which has something to do with the defrost in the freezer. According to the downloaded service manual it was either a sensor or control PCB. I changed the sensor first since it was only $18. Two days later getting same code. Changed PCB and for a week have been error free. 1 People found this story helpful Do-It-Yourself Rating: Repair Time Estimate: Less than 15 minutes