Sleeper AC fan control stopped working

Discussion in 'Heavy Duty Diesel Truck Mechanics Forum' started by CosaLima, May 20, 2023.

  1. CosaLima

    CosaLima Bobtail Member

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    May 20, 2023
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    I have a 2019 International LT625 with no idle AC/Heat. Out of nowhere my controls in the bunk for the fan stopped working. It’s not getting any power. LED lights that show fan speed started going out slowly and it just went out all the way. AC in the cab works perfectly fine and when I try to turn the sleeper fan on from the front/cab it shows that it’s turned on but sleeper is not getting any power on display. With truck off when I switch to AC no idle light on the switch turns on but fan controls do not. I checked all the fuses and can’t find any bad. Bought another fan control part, installed it, and nothing. Anyone has any ideas what this might be? Thank you in advance.
     
    Flat Earth Trucker Thanks this.
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  3. Flat Earth Trucker

    Flat Earth Trucker Road Train Member

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    Perhaps the fan itself died. No fan control is going to operate a fan that has failed.
     
    Rideandrepair Thanks this.
  4. CosaLima

    CosaLima Bobtail Member

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    May 20, 2023
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    Tested the fan/blower motor in the bunk and it works.
     
  5. Zethull

    Zethull Bobtail Member

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    May 26, 2023
    KY
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    direct wire it if it works the switch is bad
     
  6. CosaLima

    CosaLima Bobtail Member

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    May 20, 2023
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    I replaced the whole fan control unit but still didn’t work. What do you mean direct? I wish I knew how to do that. Blower motor works because I tested it. There is something else that got messed up. Like I said it went out slowly, led lights that indicate power of the fan started blinking and all of a sudden it went out.
     
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