Air Conditioner Compressor Repair | Additional Testing. Both hermetic and semi-hermetic compressors are difficult to troubleshoot sometimes and many times the problem is external to the compressor or a result of poor installation skills by the installation technician if the compressor was recently replaced or it is a split system where the system was evacuated by an HVAC technician.
Air conditioner rattle that's caused by the compressor requires the most complex repair, because the compressor is the most vital component to the operation of your AC. The compressor contains many moving parts and it can wear out internally over time, causing a rattle that will manifest every time it clicks on.
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A buzzing noise from the compressor when the air-conditioning clutch is engaged can be a sign of an overcharged system. This buzzing sound can be caused by liquid refrigerant entering the compressor. This condition is most common after an air-conditioning service were too much Freon has been added.
Compressor Clutch: The compressor clutch is a high-wear item, and if it's worn out, it can create a rattle during operation. Some vehicles can have only the clutch replaced, but some require replacement of both the clutch and compressor. There are many other potential sources of the noise as well. When the AC turns on, it puts the entire ...
So the noise is only there when the A/C clutch is engaged? The A/C is working fine though? If it was low on lubricant, usually the AC compressor won't cycle properly - it will rapidly turn on and off, something like 10+ times a minute.
Noises from the clutch are difficult to recognize because the clutch is so close to the compressor. A loose bolt holding the clutch to the shaft will make a lot of noise. The difference, between suction pressure and discharge pressure, also plays an important part on sound level. A compressor with low suction pressure will be more noisy than ...
ukrkoz said: outside plate that fell off is friction clutch plate. when coil is activated, it works as a magnet, pulls pulley towards it, then it locks pulley, pulley engages a/c compressor. rivets you seeing are part of dampening mechanism, just like you have in clutch plate.