Do it yourself how to completely replace the Freedom spacecraft to prevent freezing.

Turn on the warm air when the air outlet is closed, and then remove the water pipe under the water tank. After the water is clean, put it on and pour the antifreeze into the antifreeze kettle until it is full. I saw the antifreeze dripping from the kettle, so I added it. Remember to turn on the warm air in the meantime until the antifreeze in the kettle does not fall off.