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HVAC controller won’t power up 2019 5700xe

Discussion in 'Western Star Forum' started by fortycalglock, Apr 26, 2022.

  1. Apr 26, 2022 #1
    fortycalglock

    fortycalglock Road Train Member

    6,160
    6,602
    Jun 25, 2011
    Tourist Town, FL
    0
    I have a 2019 5700xe without ATC. 12v at fuse, 2v at HVAC controller. Any ideas where to look or does a sensor have a reputation for this? Sleeper controller won’t power up either.
     
    fortycalglock, Apr 26, 2022
    fortycalglock, Apr 26, 2022
    #1
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  3. May 4, 2022 #2
    RocketyMan

    RocketyMan Medium Load Member

    549
    337
    Jun 5, 2015
    0
    Sounds like you need to check wiring. Post the unit's last 6 of vin, and I can show some wiring of what to check if you'd like.
     
    RocketyMan, May 4, 2022
    RocketyMan, May 4, 2022
    #2
  4. Jul 22, 2025 #3
    PowderPuff388

    PowderPuff388 Bobtail Member

    34
    1
    Oct 31, 2012
    Alberta
    0
    I'm having the same issue here in a 2019 5700xe! What was the problem?
     
    Last edited: Jul 22, 2025
    PowderPuff388, Jul 22, 2025
    PowderPuff388, Jul 22, 2025
    #3
  5. Jul 22, 2025 #4
    fortycalglock

    fortycalglock Road Train Member

    6,160
    6,602
    Jun 25, 2011
    Tourist Town, FL
    0
    It was the plug that plugs into the back of the fuse block. Terrible design.
     
    fortycalglock, Jul 22, 2025
    fortycalglock, Jul 22, 2025
    #4
  7. Jul 23, 2025 #5
    PowderPuff388

    PowderPuff388 Bobtail Member

    34
    1
    Oct 31, 2012
    Alberta
    0
    Thanks! So you only had 2 volts at the cab Module? My fan is the only thing that works, nothing else, bunk won't work either
     
    PowderPuff388, Jul 23, 2025
    PowderPuff388, Jul 23, 2025
    #5
  8. Jul 24, 2025 #6
    fortycalglock

    fortycalglock Road Train Member

    6,160
    6,602
    Jun 25, 2011
    Tourist Town, FL
    0
    Yes at the control panel, but fan didn't work.
     
    fortycalglock, Jul 24, 2025
    fortycalglock, Jul 24, 2025
    #6
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