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  1. #1
    Join Date
    Nov 2010
    Posts
    10

    Confused trane voyager locking out

    trane raucc60ee
    hi anyone have an idea why this trane locking out. it trips almost everyday or sometimes once a week. by the time i get the call, all the safety controls already closed. anyone has any idea? please help

  2. #2
    Join Date
    Feb 2008
    Location
    St. louis Mo
    Posts
    10
    .10 amp fuses across the the safteys. Have you taken pressure readings? Coil is clean?

  3. #3
    Join Date
    Jan 2007
    Location
    Pittsburgh
    Posts
    181
    I would start with basics.. Filters/belt/coils. What your pressures look like ? voltage/amps ? Is there corrosion on UCP board ?

  4. #4
    Join Date
    Dec 2009
    Location
    Southern US
    Posts
    504
    Circuit 1, circuit 2, Both???

    Narrows the possibilities!
    I'm good at making things cold...You can ask my first two wives!

  5. #5
    Join Date
    Nov 2010
    Posts
    10
    @BKS60-only the 2nd circuit trips. after i reset the system, pressures, amps, superheat and subcool is good. i'm in the process of putting a tattle tale on all the safeties. belts and filters are brand new.

  6. #6
    Join Date
    Nov 2010
    Posts
    10
    @coolerguy, their is no ucp board on this system, only relays, and timer motors for circuit 1 and 2.

  7. #7
    Join Date
    Dec 2009
    Location
    Southern US
    Posts
    504
    Quote Originally Posted by Brokanic View Post
    @BKS60-only the 2nd circuit trips. after i reset the system, pressures, amps, superheat and subcool is good. i'm in the process of putting a tattle tale on all the safeties. belts and filters are brand new.
    Make its a lot less to consider. I would obviously stay on the 2ns circuit only. You may try checking all fans for contactors, shafts and amps. Also I would check the lockout relay. i have found that the relays are failing and also the pins on the subbases are not making good contact. The N/O contacts on the back of the compressor circuit breakers have also been known to fail intermittently.

    Just a few starting points!
    I'm good at making things cold...You can ask my first two wives!

  8. #8
    Join Date
    Aug 2008
    Location
    Austin, TX
    Posts
    28
    is there any active alarms before you reset the unit?

  9. #9
    Join Date
    Dec 2009
    Location
    Southern US
    Posts
    504
    I believe that unit will just open the lockout relay. There is not a control display to monitor alarms.
    I'm good at making things cold...You can ask my first two wives!

  10. #10
    Sounds like you need to start using some taddle tales to isolate your problem.

  11. #11
    Join Date
    Nov 2010
    Posts
    10
    @BKS60, yes i have bypass the n/o contacts for the breaker of that compressor. and i swap all the relays from the 1st circuit but it still trips. i will try to spin the shaft on each cond fan manually, i only took amps and was under the rated load.

  12. #12
    Join Date
    Aug 2011
    Location
    Los Angeles, CA
    Posts
    34
    Is there a freeze stat on the unit? I have had a few Tranes act this way.

  13. #13
    Join Date
    Nov 2006
    Location
    Southeastern Pa
    Posts
    19,558
    Go to the terminal board and make sure that every screw is tight. Every one. No wire on it? Tighten it anyway. Some of those are safety connections and jumper strips.

    I had a problem unit a couple of years ago, and darned if I didn't find a screw backed out about 3/4 turn.

    After that, no problem.
    [Avatar photo from a Florida training accident. Everyone walked away.]
    2 Tim 3:16-17

    RSES CMS, HVAC Electrical Specialist

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