Paul S Cumming , GA July 06, 2021 Appliance: General Electric Dishwasher GDT695SSJ0SS Ge Dishwasher Gdt695ssj0ss: Beeps three times with error code 815 when in diagnostic mode all lights flash with door open or closed. How to replace Dishwasher Main Control Board. Replaced the control board and unit works fine now. Hardest part was getting the cables plugged back into the control board. Overall it was an easy fix. Do-It-Yourself Rating: Repair Time Estimate: 15-30 minutes