Welcome to Justanswer … my name is Kevin and I will help you today!
DE is door lock error, which indicates door is not closed or locked.
Try cleaning the door lock and then try again.
If still it wont work, try closing the door bit harder than usual.
If problem returns you will have to replace the door lock mechanism.
Please IGNORE the PHONE CALL request.
That is auto generated and not sent by me.
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