I have an LG dishwasher LDF6810ST that keeps displaying the LE code. I have read many posts on here with similar problems but all seem to have had luck with either the wiring, sump assem., or main board. I have replaced the sump assembly and the main board and have the checked the wiring as well. The dishwasher will kick on for a few minutes before showing the LE error code. Any suggestions would be very helpful.