What to Do When There is Abnormal Noise in the Car Air Conditioner?
1 Answers
Abnormal noise in the air conditioner can be caused by internal or external issues within the air conditioning system. Below are detailed explanations and solutions: 1. Internal Abnormal Noise in the Car Air Conditioner: Internal noise mainly comes from the dashboard area. Possible causes include: 1. A sound similar to running water from the glove compartment when the air conditioner is turned on. This is the normal operation of the air conditioner expansion valve. 2. Noise in the air conditioning ducts. This may be due to a long-unreplaced air filter or foreign objects like leaves in the ducts. Solution: Open the air filter cover under the glove compartment, cover it with a gauze bag, start the car, and turn the fan to the highest setting to blow out the foreign objects. Alternatively, a repair shop can use high-pressure air to remove them. 3. Air or moisture in the refrigerant of the air conditioner compressor, causing noise during evaporation and expansion. Solution: Replace the refrigerant. 2. External Abnormal Noise in the Car Air Conditioner: 1. When the compressor lacks lubricating oil or the oil is improperly used, severe noise may occur inside the compressor, potentially leading to wear or damage. Solution: Check if the clutch is slipping, inspect the drive belt, and ensure proper lubricating oil usage. 2. The compressor electromagnetic clutch is another common source of noise. The compressor frequently operates under high load, shifting from low to high speeds, placing high demands on the electromagnetic clutch. Additionally, its location near the ground exposes it to rain and dirt, which can damage the bearing inside, causing noise. Solution: Inspect the air conditioner belt for loose mounting screws, oil, or wear. If the electromagnetic clutch is faulty, replace it. 3. Check for engine oil leakage. Solution: Top up the engine oil.
