Jim S Grand Rapids , MI January 10, 2021 Appliance: LG Washer WT1101CW Lg Washer Wt1101cw: Error code eo. How to replace Washer Main Control Board. Verified the pump was operational, no blockage in drain. Read several other peoples posts with sand problem, determined cause was faulty main control board. Once removed I could smell a burnt smell on it though nothing looked burnt. Replaced it with new board and now washer works as it should. Do-It-Yourself Rating: Repair Time Estimate: 30-60 minutes