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My unit is a A6V10S2B and is making a very loud noise, had to shut it off

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Hello,

There are many reasons why an air condition produces noise. Sometimes loose hardware is the culprit. Air conditioner noise could be caused from the refrigerant tubing that has a bend in it that produces rattling because it's too close to other parts of the air conditioner.
You can correct this by carefully bending it back into it's original place. Take a look at the unit and see if there are any loose parts that could be banging around causing the noise. It may be the fan blades have gotten bent over time. To remedy this simply bend them back to their original position.
Is you portable air conditioner mounted properly in the window? While the unit is making noise and rattling carefully apply pressure to the window sash and listen for any changes in the sound. This can be remedied by inserting shims between the air conditioner frame and the sash. Another good idea is to check the screws on the front panel of your air conditioner. If loose they'll need to be tightened.
There may be more serious problems that would require a service technician such as compressor issues. Refrigerant floodback occurs when the liquid enters into the compressor crankcase. This noise would usually occur when the compressor starts up. Another issue could be oil leaks causing a low oil level in the compressor but it would probably be pretty rare.

Check the front cover to ensure it is snug and not loose. The front cover can be noisy if not put on correctly. If the prongs are broken and the front cover will not fit snugly one can use tape here as well to quite it down.
The air filter when dirty can cause a restriction in the system which can cause the unit to freeze. This in turn can cause melting water to hit the fan and become quite disturbing. Keep the filter changed on a regular basis to prevent this from happening. This can happen too if the drain is stopped up. The solution for this is to unstop the drain or drains in the air conditioner with a pipe cleaner.
Check the fan that is located inside the air unit. Make sure the fan turns freely without hitting the sides of the unit. Simply take the cover off and turn the fan by hand. The fan should spin freely and unobstructed.

Air conditioner fans seem to attract all kinds of debris and sometimes it is a mystery as to where it comes from. General maintenance of this item would be to check it once a year before start up. It is a good ideal to keep logs or checklists for mechanical items in ones home.

Take care.

Posted on Aug 23, 2010

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