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Mecky1

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

Oct 10, 2021 #1

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

mecky1, Oct 10, 2021

mecky1, Oct 10, 2021

#1
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Oct 10, 2021 #2

bad-luck Road Train Member

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mecky1 said: ↑

I have a 2009 carrier unit. This code keep coming up A18 and A56. Can someone help me
Click to expand...

Code 56 check airflow
Code 18 LOW REFRIGERANT PRESSURE

bad-luck, Oct 10, 2021

bad-luck, Oct 10, 2021

#2
Oct 10, 2021 #3

reeferwrencher Medium Load Member

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Aug 4, 2018

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mecky1 said: ↑

I have a 2009 carrier unit. This code keep coming up A18 and A56. Can someone help me
Click to expand...

Fan clutch might be bad.Go in back of trailer with unit running and check if any air blowing into the trailer

reeferwrencher, Oct 10, 2021

reeferwrencher, Oct 10, 2021

#3
Oct 29, 2021 #4

RockinChair Road Train Member

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

RockinChair, Oct 29, 2021

RockinChair, Oct 29, 2021

#4

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