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Bunk A/C

Discussion in 'Volvo Forum' started by American eagle, May 28, 2012.

Page 1 of 2
  1. May 28, 2012 #1
    American eagle

    American eagle Bobtail Member

    18
    2
    Sep 16, 2011
    Reno, Nevada
    0
    I have a problem with the bunk A/C. I am getting power to the bunk blower motor but it will not work. I replaced the blower but, still nothing. Anybody have any ideas?
     
    American eagle, May 28, 2012
    American eagle, May 28, 2012
    #1
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  3. May 28, 2012 #2
    truckmechanic

    truckmechanic Medium Load Member

    534
    140
    Jan 14, 2012
    Hi Desert Ca
    0
    Follow the harness from the blower motor the the resistor check for power there
     
    truckmechanic, May 28, 2012
    truckmechanic, May 28, 2012
    #2
  4. May 28, 2012 #3
    bender

    bender Road Train Member

    2,105
    1,360
    Jul 20, 2010
    Don't Kid Yourself
    0
    Check for ground to the blower motor.
     
    bender, May 28, 2012
    bender, May 28, 2012
    #3
  5. May 28, 2012 #4
    American eagle

    American eagle Bobtail Member

    18
    2
    Sep 16, 2011
    Reno, Nevada
    0
    The resistor is mounted on top of the blower motor. The wiring from the blower go to the control panel on the other side of the sleeper. There is no ground wire on the blower. It is bolted to a plastic mount.
     
    American eagle, May 28, 2012
    American eagle, May 28, 2012
    #4
  7. May 28, 2012 #5
    bender

    bender Road Train Member

    2,105
    1,360
    Jul 20, 2010
    Don't Kid Yourself
    0
    Then the blower motor harness must supply a ground wire to the motor, it has to have a ground to run.
     
    bender, May 28, 2012
    bender, May 28, 2012
    #5
  8. Aug 4, 2012 #6
    American eagle

    American eagle Bobtail Member

    18
    2
    Sep 16, 2011
    Reno, Nevada
    0
    I was finally able to check the current to the blower motor with a multimeter. I got a reading of 5.4 volts.I am getting power to the blower motor with a good ground. I even used a seperate ground wire from the ground wire to the chassis, with this, no reading on the meter. Still nothing.
     
    American eagle, Aug 4, 2012
    American eagle, Aug 4, 2012
    #6
  9. Aug 4, 2012 #7
    American eagle

    American eagle Bobtail Member

    18
    2
    Sep 16, 2011
    Reno, Nevada
    0
    P.S. would a bad low pressure switch in the bunk a/c system have anything to do with this. My a/c system is fully charged.
     
    American eagle, Aug 4, 2012
    American eagle, Aug 4, 2012
    #7
  10. Apr 6, 2013 #8
    poolertrucking

    poolertrucking Bobtail Member

    4
    0
    Mar 5, 2011
    Milo, Me
    0
    Had this problem turned out to be a break in wiring to the bunk blower... Fixed bad wire problem solved for a while... Bunk blower stopped working on the first two stages replaced the resistor for the blower problem resolved....
     
    poolertrucking, Apr 6, 2013
    poolertrucking, Apr 6, 2013
    #8
  11. Apr 6, 2013 #9
    nasriza

    nasriza Road Train Member

    2,398
    2,074
    Feb 1, 2013
    Chicago, IL
    0
    If this is a volvo truck ill tell u exactly whee you're issue is.
     
    nasriza, Apr 6, 2013
    nasriza, Apr 6, 2013
    #9
  12. Apr 8, 2013 #10
    05vnl670

    05vnl670 Light Load Member

    165
    60
    Feb 17, 2013
    0
    I have same problem mine rear blower fan not working any speed, its a 2005 vnl670.
     
    05vnl670, Apr 8, 2013
    05vnl670, Apr 8, 2013
    #10
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