what we miss is a universal control computer to control those washing machines. It is very often that part that breaks and that is "so expensive that you'd better replace the whole machine".
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We just had a ~8 year old washer start dying with an error code, with digging it turned out it was the hall effect sensor on the drum motor that needed replacing. Cost $12 and change and was over nighted from Amazon.
What would have been nice if we got a detailed diagnostic code and not just "FE" on the front panel.