Mecky1

Discussion in 'Refrigerated Trucking Forum' started by mecky1, Oct 10, 2021.

  1. mecky1

    mecky1 Bobtail Member

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    Oct 10, 2021
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    I have a 2009 carrier unit. This code keep coming up A18 and A56. Can someone help me
     
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  3. bad-luck

    bad-luck Road Train Member

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    Nov 16, 2013
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    Code 56 check airflow
    Code 18 LOW REFRIGERANT PRESSURE
     
  4. reeferwrencher

    reeferwrencher Medium Load Member

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    Aug 4, 2018
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    Fan clutch might be bad.Go in back of trailer with unit running and check if any air blowing into the trailer
     
  5. RockinChair

    RockinChair Road Train Member

    Lower refrigerant pressure and low airflow? I suspect your coils may be icing up.
     
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