What if the air conditioner of Mercedes-Benz S350 doesn't cool and blow hot air?

1, first check whether the air conditioner is in cooling mode, and if it is, check it down.

2. Confirm whether the air conditioner is a heating and cooling machine. If so, it depends on whether there is something wrong with the four-way valve and whether it is sucked under refrigeration.

3. If the air conditioner is a single cooler, it is impossible to produce hot air, and the worst thing is to blow out air at room temperature.

There is also a more dangerous situation, that is, the heating pipe in the heating and cooling machine is also working in the refrigeration state. If this happens, it should be eliminated as soon as possible, otherwise it will be very dangerous.