What Causes Abnormal Noise in the Air Conditioning System?

1 Answers
DeMiles
07/30/25 6:46am
1. Compressor Belt Noise: The noise may be caused by a damaged tensioner pulley of the compressor belt or a malfunctioning compressor. This is relatively easy to identify. 2. Blower Fan Noise: This noise isn't just present when the air conditioning is on; it usually occurs when the external circulation is activated. It often indicates loose parts in the air conditioning system. 3. Faulty Temperature Control Switch or Air Recirculation Motor: This noise typically originates from the control panel area. 4. Buzzer Sound: This indicates a potential fault in the air conditioning system. 5. Refrigerant Flow Noise: This may occur if the air conditioning system is overcharged with refrigerant, preventing complete evaporation. Such noise can also be normal during startup. 6. Foreign Objects on Fan Blades or Evaporator: Items like cable ties stuck on the fan blades or evaporator can cause abnormal noise during operation. If possible, remove the objects yourself. Otherwise, seek professional assistance or contact the seller (if the unit is new).
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