Error code LOC
The LOC code merely means the control responded and locked the door. You'll find a tech sheet under the top panel of the machine to help guide you thru the diagnostic process, which is fairly involved.
LOC means it thinks the control panel is locked. This gives the ERR indication when you push the buttons. To unlock it you need to hold down the Options and Select buttons together until it reacts.
I know this may seem silly but - On the top right back corner of your washer hit it with medium force with your fist, this helps.
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