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  1. #1

    Tech put in a generic motor in my Trane unit 2 years ago and now things are messed up

    I have a 9 year old Trane XE-1000. About 2 years ago, a tech came out to the house because the fan motor was shot. He replaced it with a generic brand (AO Smith) which was fine until recently. Now it sometimes works sometimes doesnt. I just realized the motor is apparently NOT a generic brand of the same motor but rather a different motor with different horsepower altogether and the capacitor for that motor was NOT replaced. So I have the wrong capacitor matched to the wrong motor. Here are my questions:

    1) Can I replace the existing generic motor (1/3 hp) with the matching capacitor and all will be fine (and $ cheaper)
    or
    2) Is there a place I CAN buy an exact generic fan motor (Matching the original Trane motor) with matching capacitor and not have to pay the substantially higher cost for a direct Trane replacement

    The only other capacitor on my unit is the Start capacitor. I dont know if that has a bearing on the equation as well...

    Any help here on the forum or pm is appreciated... I am not a tech guy so I dont know much about it..
    Last edited by beenthere; 10-07-2011 at 09:20 PM. Reason: money talk

  2. #2
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    assuming you're talking about the outdoor unit. If it worked OK for 2 years, something has recently changed. There are a number of things that can cause an outdoor fan motor in a heat pump to not run. I would have a tech look at it and go from there. Could it be the capacitor? Maybe. How do you know the motor that was installed is wrong?
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  3. #3
    Quote Originally Posted by gregp View Post
    assuming you're talking about the outdoor unit. If it worked OK for 2 years, something has recently changed. There are a number of things that can cause an outdoor fan motor in a heat pump to not run. I would have a tech look at it and go from there. Could it be the capacitor? Maybe. How do you know the motor that was installed is wrong?
    I did as you suggested. he said the fan capacitor and the start capacitor were both leaking. I went online to track those down and when I pulled up the same (existing) motor I have now, the generic one, the specs were all different for the motors (versus stock) and as such the capacitors as well. Bottom line is, I have a generic 1/3 horsepower unit from AO Smith matched with the original Trane capacitor which is 'supposed" to be matched with a 1/4 horse power motor which is what the original came with... Now, it all does still work, but has become random... It works now and may not in a few hours...then will again...

    So, since I need a new motor, matching run capacitor and perhaps a start capacitor. Just looking for the cheapest way to do it.. Generic motor with matching capacitor OR new Trane motor with matching capacitor which is 3x more expensive...

  4. #4
    Join Date
    Mar 2010
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    UT
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    If you call a good tech they should be able to give you the option of a OEM or a Generic and a matching Capacitor. If that is what the problem is.

  5. #5
    Quote Originally Posted by sjones View Post
    If you call a good tech they should be able to give you the option of a OEM or a Generic and a matching Capacitor. If that is what the problem is.
    Thats actually what I'm hoping to find here... The ideal scenario is for a knowledgeable person to come on here and give me a resource which I put in my model and get generic alternatives (with matching capacitor) information

    Frankly, I dont know that the generic model I have now isnt a good choice alternative. I just know the original capacitor wasnt changed when the generic motor was installed and that original capacitor does NOT match the specs called for by the generic motor...

  6. #6
    Heres the original Trane motor specs:
    MOT08914; MOTOR, 1/4 HP, 200-230/60/1, 825 RPM, CCW, 48 FRAME, FLA 1.9, LRA 3.65, TYPE PSC,

    Heres the specs for what I have now:
    AO Smith, Fan Motor, PSC, 1/3 HP, 825, 208-230v, 48

  7. #7
    Maybe they are close enough such that the same capacitor will work fine for both but I'm guessing not... hence the problems I have now...

  8. #8
    Join Date
    Jun 2006
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    Richmond, VA
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    2,696
    If you have to do the legwork and the original service company CANNOT prove these specs to you, then you have the wrong service company. Have you called them back to address these concerns?

    Call a good service company...look at the contractor locator....or ask family and friends who they recommend.....
    It's not the Brand with the fewest repairs-It's all in the install!!! Attention to detail and using the best materials!

  9. #9
    Quote Originally Posted by beshvac View Post
    If you have to do the legwork and the original service company CANNOT prove these specs to you, then you have the wrong service company. Have you called them back to address these concerns?

    Call a good service company...look at the contractor locator....or ask family and friends who they recommend.....
    All of this came to light since he was here. He gave me a report calling for new capacitors with the specifics but they were several hundred bucks. I dont know but I dont think he realized the motor was a generic one (mentioned above) which in and of itself, may have been the wrong one. He may well have assumed that although it was a generic motor, it was one which matched the original motor specs.... Either way, its another $ to have him come back out. I just need to know this - if I use the generic motor listed above - matched with the associated and correct capacitor - am I good to go?
    OR - is everything so inter-related that alternatives must match specs precisely instead of a spec range.... Replacing the motor and run capacitor is easy (and start capacitor as well if needed).. I just want to know if I'm doing the right thing or asking for trouble. The difference between me doing it or the HVAC guy is $ . As long as I get good advice on here for the proper equipment, then I can save some badly needed money....
    Last edited by beenthere; 10-07-2011 at 09:21 PM. Reason: prices

  10. #10
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    You have to watch posting prices here. It's against the rules. Substituting generic motors for OEM's is something that is best left for experts. I've heard the HP rating are not as important as the amp rating, all other things being equal like rpms & of course voltage. I was told manufactuers fudge around & play with HP ratings, but the amp ratings are something you can rely on. Find a reputable contractor, pay the extra money and let them figure it out AND BE RESPONSIBLE for. If you do it and screw it up, you have nobody but yourself to blame.
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  11. #11
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    Did the company offer to install the OE Trane component?
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  12. #12
    Quote Originally Posted by tipsrfine View Post
    You have to watch posting prices here. It's against the rules. Substituting generic motors for OEM's is something that is best left for experts. I've heard the HP rating are not as important as the amp rating, all other things being equal like rpms & of course voltage. I was told manufactuers fudge around & play with HP ratings, but the amp ratings are something you can rely on. Find a reputable contractor, pay the extra money and let them figure it out AND BE RESPONSIBLE for. If you do it and screw it up, you have nobody but yourself to blame.
    Thanks. I will post no pricing. The aim is really just to find out some information (i.e. can I use the above listed generic motor with its associated capacitor and be good to go...)

  13. #13
    Quote Originally Posted by timebuilder View Post
    Did the company offer to install the OE Trane component?
    yes but that was for the 2 capacitors. Given his cost, I could easily do it myself. Just need to identify the correct parts...

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