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  1. #1

    Trane XL14i Compressor RPM low

    Have a Trane XL14i and the compressor fan RPM seems to be lower than normal. It is the single speed fan motor rated at 825 rpm. The unit is not cooling the house like it used to, runs most of the afternoon in the heat of south La, the tech is scheduled to look at it today, any reason for the lower rpm?

  2. #2
    Join Date
    Mar 2009
    Location
    Mount Holly, NC
    Posts
    3,023
    there are many reasons a motor will slow down. none are good. let us know what the tech found.
    it can overheat the system, I'd recommend shutting down the system while you wait for the tech.
    The TRUE highest cost system is the system not installed properly...
    The three big summer hearththrobs...
    Mel Gibson
    Dwane Johnson
    The A/C repairman

  3. #3
    Tech came out, motor amp draw was 1 amp, (rated at 1.4 amp max)
    The capacitor looked rusty and corroded so replaced that, but no change in rpm.
    Will be getting a motor and was thinking about getting the 1175 rpm motor, any issues with that?

  4. #4
    Join Date
    Dec 2010
    Location
    Down by the river
    Posts
    1,620
    Sure is, the unit was designed for a certain rpm motor for a reason.

  5. #5
    Join Date
    Jul 2006
    Location
    Virginia
    Posts
    4,614
    Trane xl14 heat pumps 2.5 ton and up have 2 speed 825 rpm condenser fan motor.the defrost control regulates the speed
    We really need change now

  6. #6
    Quote Originally Posted by Southern Mech View Post
    Sure is, the unit was designed for a certain rpm motor for a reason.
    Ok thanks, thought he said the replacement had more rpm.


    Quote Originally Posted by catmanacman View Post
    Trane xl14 heat pumps 2.5 ton and up have 2 speed 825 rpm condenser fan motor.the defrost control regulates the speed
    So might not be fan motor at all.

    We'll see what happens tomorrow when he comes back.

  7. #7
    Join Date
    Jul 2006
    Location
    Virginia
    Posts
    4,614
    The tech is wrong the replacement motor is exactly the same also the xl units have a 10 yr part warranty , what is the model and serial number of the unit only need the first 4 digits of the serial number have replaced several motors on the 14i
    We really need change now

  8. #8
    Ok, I'll make sure to get the correct motor.

    Model # 2TTX4048B1000AA
    Serial # 7384


    Quote Originally Posted by catmanacman View Post
    also the xl units have a 10 yr part warranty
    Good to know thanks.

  9. #9
    Join Date
    Jul 2006
    Location
    Virginia
    Posts
    4,614
    That is a straight cooling unit and the motor should be under warranty . If you have the part and labor warranty there will be no charge if you do not you will have to pay labor
    We really need change now

  10. #10
    Join Date
    Aug 2004
    Location
    North Richland Hills, Texas
    Posts
    14,914
    That unit uses a single speed 825rpm 1/6hp motor.

    The unit was made in 2007, so the motor is still covered by the 10 year parts warranty.
    If more government is the answer, then it's a really stupid question.

  11. #11
    Join Date
    Sep 2008
    Location
    Western PA
    Posts
    25,411
    Quote Originally Posted by Thud View Post
    Tech came out, motor amp draw was 1 amp, (rated at 1.4 amp max)
    The capacitor looked rusty and corroded so replaced that, but no change in rpm.
    Will be getting a motor and was thinking about getting the 1175 rpm motor, any issues with that?

    Potentially, yes.

    Increasing RPM increases airflow exponentially, therefore increasing the horsepower required to move that air.

    You cannot just change RPMs without taking all factors into consideration.

  12. #12
    To update this, the Tech submitted a warranty claim to Trane for a motor and they tell him that the claim is denied due to Hurrican Isaac. Said motor problem was caused by hurricane and power outages and they are not responsible. It was at lower rpm before and hurricane had nothing to do with it.

    What should I do now?

    Roughly how much should the motor be?

    Wondering if I should just pay for it myself.

  13. #13
    Join Date
    Dec 2005
    Posts
    1,908
    Quote Originally Posted by Thud View Post
    To update this, the Tech submitted a warranty claim to Trane for a motor and they tell him that the claim is denied due to Hurrican Isaac. Said motor problem was caused by hurricane and power outages and they are not responsible. It was at lower rpm before and hurricane had nothing to do with it.

    What should I do now?

    Roughly how much should the motor be?

    Wondering if I should just pay for it myself.
    Was your unit submerged in flood water ??? I don't have such impression from you.

    I am so certain trane company won't deny your warranty.

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