Question about Carrier 38CKC036 Air Conditioner

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A/C fan very loud

The A/C fan on my exterior unit didn't start up two summers back. I tried manually rotating it a bit, which fixed it, and it has worked fine for about 2 years. Recently, a visitor noted how loud our fan was outside. It is much louder than identical units nearby, though it still works and cools our house well. Is this likely to be a lubrication issue, or possibly a capacitor or motor issue?

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Sounds like a motor issue check for loose bolts on top of the unit i would get the unit cleaned and have the technician look at it

Posted on Aug 02, 2009

  • t1m130
    t1m130 Aug 02, 2009

    sounds like a motor issue check for loose bolts on top of the unit i would get the unit cleaned and have the technician look at it


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If the air coming from the condenser is not hot or warm you may be hearing the compressor trying to start but it will stop after only a few seconds as the overload opens and shuts it down. The compressor could be bad or there may be something keeping it from starting properly. This is not good and you should leave it off until someone can come out to look at it to prevent possible further damage. The other possibility is you are hearing one of the components inside the electrical compartment buzzing. This one is not so bad but can still cause more problems if not addressed soon. Can't really go into much more detail about this as it involves high-voltage parts and the rules forbid DIY instructions. Someone may read this post and think "that's what wrong with my system" and attempt to fix it themselves. Either way it is something that I would recommend having looked at soon unless the weather is mild enough for you to go without the A/C for a few days.

Posted on Jun 03, 2013

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