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What is the reason for no air in the 1-3 gears of the car blower switch?

1 Answers

JadeLynn

07/30/25 7:38am

The reasons for no air in the 1-3 gears of the car blower switch are as follows: 1. Evaporator box air leakage: If there is air leakage at the connection between the evaporator box shell and the air duct, the cold air originally released from the air conditioning outlet will continuously leak from the air leakage point, resulting in a reduced air volume from the air conditioning outlet. 2. Air filter: The air filter is located at the air intake of the blower. All cold or hot air blown out from the car air conditioner must pass through the air filter. However, the air filter is also prone to accumulating dirt. If the owner does not replace the air filter in time, a large amount of dust can easily adhere to the air filter, which will naturally reduce the airflow passing through the air filter. 3. Poor sealing of the air duct: The air conditioning outlet is connected to the blower via an additional air duct. If the sealing of the additional air duct deteriorates, air leakage will occur, leading to a reduced air volume from the air conditioning outlet.

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