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What Causes the Car Air Conditioner Fan to Stop Working?

1 Answers

DiCooper

07/28/25 4:46pm

There are several reasons why a car air conditioner fan may stop working, including a faulty fan relay, poor contact in the main control switch, damaged fan motor coils, or the engine coolant temperature not reaching the required level. It is best to promptly visit a repair shop for inspection to avoid affecting the normal use of the vehicle. Faulty Fan Relay: If the relay is faulty, the car's radiator fan will also fail to operate. Engine Coolant Temperature Not Reaching Required Level: If the coolant temperature is normal but the car's radiator fan still does not work, the issue might be with the fan relay. Poor Contact in Main Control Switch or Damaged Fan Motor Coils: Use a multimeter to measure the contact resistance of the main control switch. If the resistance is too high or zero, the switch should be repaired or replaced. Hazards of a Non-Functioning Car Air Conditioner Fan: A non-functioning car air conditioner fan can severely impact cooling performance and, in serious cases, damage the air conditioning system and compressor. If the air conditioner fan stops working, timely repairs are essential. The saying goes, "Three parts quality, seven parts installation." After leaving the factory, an air conditioner is considered a semi-finished product. Only after proper installation and debugging can it operate normally and be deemed a finished product. Therefore, to ensure convenient and smooth operation of the air conditioner, careful attention must be paid during installation.

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Is Steering Wheel Shifting Practical?

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