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The air conditioner cannot be started normally when it is operated in cooling mode at minus 20 degrees Celsius. However, when operating in heating mode, most air conditioners can be started, but some air conditioners can be started but will have protective shutdowns. Only air conditioners specially designed for low temperatures can work properly.
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The outdoor temperature is too low to start the air conditioner, because the outside machine itself is in a state of ice, the air conditioner opens the heating machine to blow the cold air, and the air conditioner will freeze indefinitely