Why is the water in the tank not dissipated and using refrigerant?

When the temperature is too low, the water will freeze, which will seriously damage the water tank. In places with very poor water quality, it will also cause scale to the system and affect the cooling effect. Automatic mode The gear shifting speed can't keep up with the engine running speed at all; the actual displacement in manual mode is not strong enough for the engine. In M mode manual mode, you can press the /- button to manually increase or decrease gears.