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Old 03-30-2015, 06:47 PM   #1
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my AC is making a loud noise

So my AC started out just making a noise when I turned it on at the beginning like the fan was hitting something. I tried to turn it on yesterday and now its loud all of the time with the same noise. Its to the point where I cannot run it because the others in the RV park will complain. I opened the AC and after getting chased around by a bee on my roof I realized that the blade isn't hotting anything. You will see a round cylinder in the pic where the sprocket goes into. It is coming from there somewhere but I cannot even figure out how to open it. Any ideas what this can be? I need to get it fixed asap as I am on the gulf coast of Texas and its hot. You can camp for free on the beach here and I plan on doing so in 2 weeks and prefer to fix this first.
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Old 03-30-2015, 11:21 PM   #2
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Uh oh. No replys means this will be difficult. Anyone?
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Old 03-31-2015, 07:23 AM   #3
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I don't have an answer.
Anyway to take a video?

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Old 03-31-2015, 07:46 AM   #4
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If you can't make a video maybe you can mark up the photo where the noise is coming from. I don't understand the "sprocket" part. I always thought a sprocket to be a toothed gear like on a bicycle.
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Old 03-31-2015, 08:08 AM   #5
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Well I see the first pic is the condenser fan then the motor the sealed side of the motor is the squirrel cage housing that fan. I had another air cond. where the squirrel cage fan had slid back against the housing causing a buzzing sound. Maybe that is your problem? You access the fan by removing the housing screws on the covered part and the fan has a set screw in it loosen it and slid the fan where it is not hitting and tighten it and it should be good to go.
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Old 03-31-2015, 08:19 AM   #6
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Quote:
Originally Posted by onetonford View Post
Well I see the first pic is the condenser fan then the motor the sealed side of the motor is the squirrel cage housing that fan. I had another air cond. where the squirrel cage fan had slid back against the housing causing a buzzing sound. Maybe that is your problem? You access the fan by removing the housing screws on the covered part and the fan has a set screw in it loosen it and slid the fan where it is not hitting and tighten it and it should be good to go.
This is what I'm thinking .
Blower motor either bad or fan blade has moved.

On a side note is that a blue medical rag in the one pic?

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Old 03-31-2015, 08:49 AM   #7
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So, that motor has two fans associated with it. The big propeller one is the compressor coil cooling fan. Inside the foiled enclosure is the interior blower that moves the camper cooled air.

Just because the propeller one is not hitting anything does not mean the inside one is free. There may be a wire or something hitting that fan. MAKE SURE that fan does not make noise when you turn it.

The bearings in the motor could also be bad. If your motor has an oil fitting; try lubing it with 3 in 1 oil to see if that quiets the motor. If not, (or there is no filler) then you may need to replace your motor.
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Old 03-31-2015, 08:54 AM   #8
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You description is not clear to me, but I think you are referring to the fan motor. Hold the shaft gently with a fliers then with the other hand, try moving the fans. The fan blade and squirrel cage should not move. They will sometimes work themselves loose and cause noise. Oiling the area you show, will most likely not help much as these motors usually have sealed bearings that do not need (or accept) oil. They need to be replaced if they fail.
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Old 03-31-2015, 09:17 AM   #9
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Wow great feedback back and so much appreciated! I will be taking a video today and posting it. I do have the ability. I didnt know it had 2 fans.
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Old 03-31-2015, 09:35 AM   #10
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Squirrel cage blower

You may have to remove the bottom of the A/C (where the filter is) and up inside is a squirrel cage blower. There may be something hitting the squirrel cage. Dirt dobber nest, wasp nest or your squirrel cage is bad. You will have to get access to it from the top also to see what is hitting. The squirrel cage can be accessed
through the top. It is located on the opposite end of the motor of the fan.

Good luck
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