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  1. #1
    Join Date
    Jul 2011
    Posts
    7

    Confused Carrier Condensor Fan Motor blown

    I have a Carrier split system two units (have 2 thermostats). We are in fall and temperature in the late night and early morning falls to high 40's here in NC. My wife turned the ground floor thermostat from cool to heat at around 10 pm. Thermostat in the 2nd floor was still set to cool which was there since summer. In the morning at around 6 am I heard loud rattling noise coming out of the outside heating unit. I think I smelled a little bit of burning smell inside home which came out of the condensor unit. I cut the power off to the unit by pulling off the circuit connector outside the unit at around 12 noon. I have left the town for a month and only my wife and kids will be at home. Now, only AC is running. I have not yet scheduled for a winter tune up yet since the temp outside is not that cold. I will be back sometime in early Nov (about 4 weeks from now). I did not observe whether the condensor fan unit is running or not when I cut off the power to the unit. Here are the possible things that could have happened:
    1. Condenser fan motor blown (may need to replace fan blades too) and I was told by the technician last year that my far might break anytime.
    2. Capacitor may be blown.
    I would like to be personally present when I call the service technician that won't happen any time soon. Is it OK to keep the thermostat to cool or should I turn from Cool to fan only in both the thermostats (weather seems cool and we can manage without AC for the month of Oct we are in NC) until I fix the condenser in 3-4 weeks from now. Will this harm the system more by blowing the actual compressor. Should I have the technician come in right now and take care of the condenser.

  2. #2
    Join Date
    Jun 2011
    Location
    Houston area
    Posts
    1,493
    If you pulled the disconnect to the outdoor unit it won't matter one bit whether you leave the stat in cool or fan only mode. If it's a straight AC you can wait until the next time you need it. If it's a heat pump you might want to consider having it fixed now. The repair sounds simple enough.
    The picture in my avatar is of the Houston Ship Channel and was taken from my backyard. I like to sit outside and slap mosquitos while watching countless supertankers, barges and cargo ships of every shape and size carry all sorts of deadly toxins to and fro. It's really beautiful at times.....just don't eat the three eyed fish....

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  3. #3
    Join Date
    Oct 2010
    Location
    AZ
    Posts
    647
    It depends on what kind of unit you have. If it is on your roof, it probably has a single disconnect which will prevent the whole unit from operating. If you have a unit outside with a small copper pipe and a large copper pipe running somewhere else, you may be able to just shut off the outside (condenser) unit while still being able to run the inside fan.

    The fact that you smelled smoke inside makes me a little concerned about running the air handler (inside fan). If you have been running the fan with no problem or smoke smell, then you are probably ok to continue.

    What kind of unit do you have? Heat Pump? AC with gas heat? AC with electric heat (heat strips)? Heat pump with added electric heat?

  4. #4
    Join Date
    Dec 2002
    Location
    SouthEast NC ICW & Piedmont Foothills
    Posts
    7,635
    I'm a tad confused???


    1- are you planning to attempt to fix this yourself ( read the rules again)?

    2-you don't have confidence ( trust ) your servicing contractor??

    3- if you trust your service company, why did you wait??
    It`s better to be silent and thought the fool; than speak and remove all doubt.

  5. #5
    Join Date
    Mar 2005
    Location
    Suppy NC
    Posts
    4,516
    Edit

    It is comments like this that give out the wrong impression about hvac techs
    I also find it quite insulting and ofensive you come into our forum and put us down without any concideration of what we do.
    Even if a tech isnt the smartest tool in the shed most are honest and have been through a lot to have earned the name tech!!!!!!!!!!
    Last edited by Dad; 10-15-2011 at 10:49 AM. Reason: quote of uncalled for remarks

  6. #6
    Join Date
    Oct 2011
    Location
    New Hampshire
    Posts
    22
    You said outside heating unit, so I take it you must a heat pump. If you can go without heat then you should be fine until you get back since you killed the power to it.

  7. #7
    Join Date
    Jul 2011
    Posts
    7
    I do have Heat Pump. Thanks for the feedback. It looks like It is ok to get my condenser fan fixed when get back home sometime in Nov. The load noise coming out of the unit was similar to sound when blown magnetron of microwave. If anybody is familiar with this kind of sound? I don't know how to describe in better words or meaningful way. My only concern is I did not cut off the power immediately. The heat pump was running for nearly 6 hrs before pulled the connector off. Does you think that must have damaged something else. I could not smell any burning or burnt smell while I cutting off the power.
    How can I find out the model number of my Carrier Heat pump. Is that visible outside the unit or should I open up something to see the actual model. My unit is surrounded by plants It will be real hard for someone to get around the unit. I don't have the details or manual of what kind of heat pump I have Carrier 38CKC-024340 AC Unit Split system AC system (installed in 2002 - new home, 3000 sq ft) and a carrier gas pack 48GS.

    Guys here is the noise I am getting
    http://www.youtube.com/watch?v=9gfnmVB5q3c

  8. #8
    Join Date
    Jun 2011
    Location
    Houston area
    Posts
    1,493
    Quote Originally Posted by dijit View Post
    .......Cooked says go ahead, but what I am trying to find out is why does he smell smoke?? It can be from many things including the blower fan, in which case he should not run it.
    Quote Originally Posted by nowinus View Post
    ....I smelled a little bit of burning smell inside home which came out of the condensor unit. I cut the power off to the unit by pulling off the circuit connector outside the unit at around 12 noon....
    Well, ahem. I assumed it was a split system and the burning smell wafted in from the outside and then it would be okay to kill the power outside and run the indoor fan. If it's a packaged system then no, I wouldn't do that.

    nowinus, you can get the model number from the data plate on the outside of the unit. No need to open up the unit and please don't. Now that we know it's a heatpump just call somebody to fix it. It's usually not a big deal.
    The picture in my avatar is of the Houston Ship Channel and was taken from my backyard. I like to sit outside and slap mosquitos while watching countless supertankers, barges and cargo ships of every shape and size carry all sorts of deadly toxins to and fro. It's really beautiful at times.....just don't eat the three eyed fish....

    `. .` .>(((>

    `... `. .` .>(((>

    .` .>(((>

    LMAOSHMSFOAIDMT

  9. #9
    Join Date
    Oct 2010
    Location
    AZ
    Posts
    647
    Quote Originally Posted by Cooked View Post
    Well, ahem. I assumed it was a split system and the burning smell wafted in from the outside and then it would be okay to kill the power outside and run the indoor fan. If it's a packaged system then no, I wouldn't do that.

    nowinus, you can get the model number from the data plate on the outside of the unit. No need to open up the unit and please don't. Now that we know it's a heatpump just call somebody to fix it. It's usually not a big deal.
    didn't mean to be a jerk. just making sure assumptions aren't being made that may not be true.

  10. #10
    Join Date
    Nov 2006
    Location
    Southeastern Pa
    Posts
    19,506
    Let's assume that all this has to do with the unit you changed over to a "heat" setting.

    If it is a heat pump, you won't get the heat pump function OR the cooling with a bad outdoor fan. You might get the indoor fan to run. Maybe electric heat strips will come on with a call for heat, depending on how the system is wired. I can't tell from here.

    Since you have two units, is any of your info or question regarding the other unit?

    If not, and you are talking about the heat pump your wife turned to heat, call your service company and schedule a time when you can be there.

    TIP: don't stand next to the tech while he is working. It distracts him from focusing on his work, and on occasion, can compromise his safety for that reason.
    [Avatar photo from a Florida training accident. Everyone walked away.]
    2 Tim 3:16-17

    RSES CMS, HVAC Electrical Specialist

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  11. #11
    Join Date
    May 2004
    Posts
    12,266
    Tin is correct. There is no need to bash our industry.

    Tin, no need to quote when you find something offensive. Doubles the work of the Mods. Take it like this... if you were to quote a spammer for selling phones then that makes you an accomplice to spamming.... do you see my logic.

    Thx

  12. #12
    Join Date
    Mar 2005
    Location
    Suppy NC
    Posts
    4,516
    dad i do see your point
    sorry

  13. #13
    Join Date
    May 2004
    Posts
    12,266

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