Passat B5 warm air is turned on, and it will cool after blowing for a minute or two. What is the reason? A friend knows.

Passat B5 warm air is turned on, and it will cool after blowing for a minute or two. The reason is that there is something wrong with the cold-hot conversion motor.

When the air conditioner of Passat B5 is on, two winds will be blown into the car by the air conditioner, one is warm air from the warm air box, and the other is cold air from the air conditioner. After the two winds are mixed, they will be adjusted to the appropriate temperature according to the set temperature value. When there is a problem with the cold-heat conversion motor, if the cold air is out of control and enters too much, the warm air will not be hot.

Solution:

1. Replace the cold and hot air conversion motor, and pay special attention to its damper. It is necessary to lift the instrument when replacing it. Improper operation will lead to many problems, so be careful when replacing it.

2. When turning on the warm air, turn the temperature to the highest. Press the ECON button, the air conditioner will not cool, and the mixed cold air is natural wind, which can keep the heat of the air conditioner and the temperature inside the car will be higher.

Extended data:

Fault causes of Passat B5 cold-heat conversion motor:

1, heater block or actuator problem. The principle of automobile warm air is to blow the heat of the warm air small water tank into the cab through the blower. If the air volume is insufficient or the distribution of cold and hot air is not good, the heat of the small water tank of the warm air cannot be dissipated, which will cause the temperature of the warm air not to rise.

2. The air door inside the air duct can't be switched in place, resulting in that the hot air can't be completely opened and the external circulation can't be closed.

3. The control mechanism of the heater is damaged. If the two inlet pipes of the warm air water tank are overheated, there is something wrong with the control mechanism of the warm air.

People's Network-Why is it so cold? In winter, the air conditioner and warm air are not hot as hell.

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