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Peterbilt 2019 389 ac in sleeper not working

Discussion in 'Peterbilt Forum' started by Stuntihn, May 6, 2023.

  1. May 6, 2023 #1
    Stuntihn

    Stuntihn Bobtail Member

    10
    4
    Apr 7, 2023
    0
    Hey my ac blows cold up front not hot in the back the knobs are lit up I tried to find the fuse box for the sleeper but didn’t see any back here any advice on what it could be or where the fuse box is for the sleeper hvac?
     
    Stuntihn, May 6, 2023
    Stuntihn, May 6, 2023
    #1
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  3. May 7, 2023 #2
    RockinChair

    RockinChair Road Train Member

    4,182
    9,342
    Feb 19, 2012
    CC, TX
    0
    The fuse box is under the bunk. If you stand outside and open the sleeper door it's just inside and to your left, against the front wall of the sidebox.

    If the sleeper is blowing hot then the problem is not in the fuse box. The blend door might not be working correctly or there may be a restriction in the refrigerant lines or the evaporator. Also, check to make sure the button with the snowflake on it is lit up green and the blend knob is turned all the way to the left.
     
    RockinChair, May 7, 2023
    RockinChair, May 7, 2023
    #2
  4. Jul 23, 2023 #4
    Stuntihn

    Stuntihn Bobtail Member

    10
    4
    Apr 7, 2023
    0
    where is the blend door for the sleeper located I think mine is just stuck on hot
     
    Stuntihn, Jul 23, 2023
    Stuntihn, Jul 23, 2023
    #4
  5. Jul 23, 2023 #4
    Stuntihn

    Stuntihn Bobtail Member

    10
    4
    Apr 7, 2023
    0
    I found the issue I lifted up the bunk and found the fuses and blend door for the sleeper and it was all good just a dirty cabin air filter as soon as I took it out it was blowing cold as new
     
    Stuntihn, Jul 23, 2023
    Stuntihn, Jul 23, 2023
    #4
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