The shut off valve is part of your house. The fridge doesn't have one, so it's entirely up to whoever designed your plumbing. Could be in the wall behind the fridge, in the floor under the fridge, in the utility room downstairs, under the kitchen sink, really anywhere. I spend a lot of time hunting for them on service calls myself. They are all different, sadly. Good Luck!
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The shut off valve is part of your house. The fridge doesn't have one, so it's entirely up to whoever designed your plumbing. Could be in the wall behind the fridge, in the floor under the fridge, in the utility room downstairs, under the kitchen sink, really anywhere. I spend a lot of time hunting for them on service calls myself. They are all different, sadly. Good Luck!