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  1. #1
    Join Date
    May 2017
    Location
    egypt
    Posts
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    CARRIER REEFER with LO MESSAGE IN SETPOINT AND ALARM 14



    Hey guys
    how are you
    this is my first time in this forum


    really i need fast response because i'm stuck

    my problem is i had a problem with one carrier reefer container then i want to make sure that controller card is ok.
    so i took a controller card from another reefer "which i have the problem right now".
    then when i fixed back the controller card which i took to its original place in the reefer.
    after switching on unit found that display is dim "no back light" also all led for "in range- sup- ret- cool-alarm- heat- defrost" are not working. and only on the display setpoint and supply temp numbers readings are shown.

    also found that letters "LO" is flickering on the setpoint place on the display. and alarm AL 14 is active.

    i checked power found that 451v is after the CB also on the "L1, L2, L3" for both PA & Pb contactors for the phase.

    after following the manual found that may be current sensor is defective; i changed with new one but still the same problem.
    also i checked all wirings found all in good order.


    no i have problem in this reefer unit it's not working.
    all i did that i took its controller card and put it in another reefer to check then after i put it back to its place this problem happened with me .



    please i need help to save this reefer container unit



  2. #2
    Join Date
    Sep 2017
    Location
    Philippines
    Age
    35
    Posts
    1
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    0

    Re: CARRIER REEFER with LO MESSAGE IN SETPOINT AND ALARM 14

    Got a same issue without any other alarm. Only LO. Supply voltage is normal. Showing also on cd display at 456v. Anyone? Thanks.

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