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How to Use the Car Air Conditioner's Internal and External Circulation?

1 Answers

Foster

07/29/25 11:38am

Methods for using the car air conditioner's internal and external circulation: 1. Locate the internal/external circulation switch button on the car air conditioner's control panel; 2. Press the button to switch between internal and external circulation. If driving on congested urban roads, it is recommended to use internal circulation. For long-distance trips or highway driving, external circulation mode is advisable. When external circulation mode is activated, the blower will draw fresh air from outside into the car, which is beneficial for the health of the passengers. In internal circulation mode, the blower does not bring in fresh air from outside. If the air conditioner is set to heating, activating external circulation will cause some of the warm air inside the car to escape. If the air conditioner is set to cooling, turning on external circulation will slow down the cooling process.

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What are the symptoms of a faulty canister purge solenoid valve?

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