Washer gives f11 error code

Here is what fixed mine. Remove the top cover by removing the three screws on the back of the machine at the top. Slide the cover to the rear and lift off. The mother board has 2 relays on it. They have white plastic covers. One is labeled K4 and K2. There are five legs on each relay soldering them to the circuit board. Remove the circuit board from the machine. It is the one you can see with the top off in the back of the machine. Unplug all the connectors. Unsolder the 2 omron relays. With a small screwdriver carefully remove the plastic cover on the K4 relay. look at the contact points on the normally open contacts and I will most likely they will look dull and burnt. They should be bright and shiny. You can clean contact points with contact cleaner and a eraser. If you take off the cover of the 2nd relay you will see the contact points are nice and bright and shiny. Swap the 2 relays and resolder them on the circuit board. While you have the board out, and rub it on the contact points where all the connectors slide onto the board. . reinstall the circuit board and replace the top cover. dozens of loads since I did this with no more problems. I expect another failure at some point when the points deteriorate on the swapped relay. At that point I will try and find replacements for both relays. The K2 relay apparently have less voltage going threw the contacts and does not fail.