(2) troubleshootingIn the process o

(2) troubleshootingIn the process of time operation, the air conditioner of this car did not enter the closed state due to the upper damper, resulting in the introduction of high temperature air outside, which affected the cooling effect. The opening and closing action of this movable damper is controlled by vacuum suction package, which depends on the control of vacuum solenoid valve. In addition, there is also a one-way valve on the vacuum pipeline, as long as one of the above components fails to work normally, it may lead to the failure of normal operation of the damper to the closing action. In fault analysis and technical maintenance of comprehensive operation, if the amount of refrigerant is normal, air conditioner starts, whether high or low voltage are within the normal range, in other words, the refrigeration system is no exception, but couldn't provide normal refrigeration effect, so this kind of circumstance should be inside and outside air circulation system as the screen objects, see the presence of abnormal.Replace A new vacuum suction bag with normal functions and the same specifications. After starting the engine for A short period of time, press the A/C switch and select the REC switch. It is found that the movable damper is closed in operation due to the effect of the vacuum suction bag. In this stage, there is cool air in the driver's panel outlet of the target vehicle, which can effectively play the effect of refrigeration in practical operation, and the fault can be eliminated smoothly at this time.