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What is the situation when the car air conditioner is turned on but the fan does not rotate?

1 Answers

LaPaige

08/27/25 3:56am

The main reasons for the fan not rotating when the air conditioner is turned on are a faulty relay, the water temperature not reaching the required level, or a problem with the thermostat switch. Below are the specific details: 1. Relay malfunction: If the water temperature meets the requirements but the car radiator fan still does not work, it could be due to a problem with the fan's relay. If the relay is faulty, the car's radiator fan will not operate. 2. Whether the water temperature has reached the required level: Most modern car radiator fans operate using an electronic temperature control system. Therefore, the fan will only start rotating normally when the water temperature inside your car reaches the specified level. 3. Thermostat switch issue: If the above two aspects are not problematic, then it is necessary to check the thermostat switch. Sometimes, this component can also develop faults, which can affect the operation of the car radiator fan. Hence, it is important to inspect this as well.

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