Freezer And Refrigerator Too Cold

Had a problem with my side by side Fridgidaire in that I was getting ice build up behind panel in freezer and it became noise maker when it got into the fan. Posted this and got a response which was a big help in that it led to a faulty timer. Since replacing the timer both the freezer and refrigerator have frozen to the point where the temp controls have no effect and everything is frozen solid. Any Suggestions?
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