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The washer overflowing can only happen from 2 things, either the electronic water valve is stuck open, or the pressure switch isn't working properly (it has a different setting for rinse cycle which it defaults to). If you can shut the washer off and the water stops flowing, then your water valve is not sticking open and you need to replace the pressure switch if you blow through the hose and it's clear and doesn't have a hole in it. Below is a link to the pressure switch you'd need to order and replace for your model.
CLICK HERE for pressure switch
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