Hello, do you have a model number please?
have you tried unplugging the unit for more than 5 minutes, and see if the unit would reset by itself?
Model no. - KG36P320GB/11
Thanks for the switch off for 5 minutes, this appears to have worked!
Hello, Glad the reset procedure works. The 5U code could have been to tell you that the door was open for quite a long time and when you un plugged it, it reset the error code. Glad I was able to help. You are very much welcome. Thank you for using this service.