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  1. #1
    Join Date
    Aug 2006
    Location
    Tennessee
    Posts
    462

    Carrier Chiller Service Bulletin?

    Hello All,


    There is one of our mech techs that is having some trouble with a Carrier Chiller Mod#19XR. It is throwing a M2 Contactor Failure and the technician believes that the aux contactor is not transferring the 5vdc properly. He remembers (vaguely) that there was a bulletin about the issue a while back but needs to provide that documentation for the engineers to approve repair. Throw/stops/coil have been checked. New Aux contacts have been installed. Any help will be greatly appreciated.

    TIA
    He who asks a question is a fool for five minutes. He who does not ask any questions is a fool forever.

  2. #2
    Join Date
    Feb 2012
    Location
    utah
    Posts
    106
    I did a quick search and did'nt find a service bulletin about it. you said that you changed the aux contacts and are still having the problem?

  3. #3
    Join Date
    Aug 2006
    Location
    Tennessee
    Posts
    462
    Yes, they have been changed. I believe the technician had incorrectly adjusted throw and he is presently getting them dialed in.
    He who asks a question is a fool for five minutes. He who does not ask any questions is a fool forever.

  4. #4
    Join Date
    Mar 2012
    Location
    montreal/canada
    Posts
    81
    What do u mean by M2 contacted failure, do I mean it is tripping the shunt breaker main disconnect

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