What causes AC compressor knock?
What causes AC compressor knock? The most common causes of a loud knocking or banging noise are: A loose part in the AC compressor. In many cases this will require a compressor replacement; in others, the loose part simply needs to be tightened or replaced. An unbalanced blower. What happens when the Freon level in the air conditioner is too low? If the Freon levels are too low, the clutch will fail to engage which means there's not enough refrigerant for the compressor to pressurize. In other words, your air conditioning system has nothing to work with! Can a low...