Are you renting this house? Do you own it? What are the water conditions: hardness/iron? How old is it? What brand/model is it?
Simply unplug it and put it on by-pass. I might sanitize it before you shut it down and after you start it up again. Avoid freezing conditions. Remove from open weather conditions if outside.
There is a risk of ruining many utilities, appliances, fixtures and surfaces in the house. Is it worth it?
Most people who don't like softened water, don't understand it and mistakenly say things like: 'I can't wash the soap off', or ' I don't want to drink salt water'. etc. Most people who suffer through the first short period of time convert into believers to the benefit of both theirs and yours.