Air condition not working properly | FerrariChat

Air condition not working properly

Discussion in '456/550/575' started by DPA360, Apr 7, 2014.

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  1. DPA360

    DPA360 Karting

    Jul 16, 2007
    109
    #1 DPA360, Apr 7, 2014
    Hey guys haven't driven the 550 in months and took it out last week & noticed when I put the AC control knob to 0 on control it still blows a decent amount of air out of vents. When I push the stop button the air still continues to blow out. Don't understand it, when I switch it to 1/2/3 it blows even harder and harder. Any suggestions on what it can be? I checked fuse that was fine, I swapped relays still does the same thing. Any suggestion would help.
    Tia:)
     
  2. 550v12SABI

    550v12SABI Karting

    Mar 29, 2012
    243
    Long Island, N.Y US
    Full Name:
    Steve in NY
    #2 550v12SABI, Apr 7, 2014
    Mine is the same way and I have gotten used to it.
     
  3. DPA360

    DPA360 Karting

    Jul 16, 2007
    109
    #3 DPA360, Apr 7, 2014
    Is that normal? Feel like I'm going crazy trying to figure it out. I almost can't remember if car always did that and I don't remember or I'm just loosin it. Lol
     
  4. 308 GTB

    308 GTB F1 World Champ
    Rossa Subscribed

    Feb 7, 2002
    11,190
    New Jersey
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    Barry Wolinsky
    #4 308 GTB, Apr 7, 2014
    Are you moving when the fan speed selection knob is set to 0?
     
  5. DPA360

    DPA360 Karting

    Jul 16, 2007
    109
    #5 DPA360, Apr 7, 2014
    Both when moving and parked with engine running it blows on 0.
     
  6. 308 GTB

    308 GTB F1 World Champ
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    Feb 7, 2002
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    Barry Wolinsky
    #6 308 GTB, Apr 7, 2014
    Set both knobs to "aut" and press the STOP button so it illuminates (compressor off). What happens then?
     
  7. DPA360

    DPA360 Karting

    Jul 16, 2007
    109
    #7 DPA360, Apr 7, 2014
    I'll try that when I get back to garage but I'm pretty sure I've tried every scenario with that switch to get the blower to stop and nothing stops it but pulling 7.5 fuse out. In theory they should turn off once you put it to 0, right?
     
  8. 308 GTB

    308 GTB F1 World Champ
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    Feb 7, 2002
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    Barry Wolinsky
    #8 308 GTB, Apr 7, 2014
    Yes, setting the fan speed control knob to 0 should shut off the fan and let outside air in through the vents while the car is moving.

    But I always set both knobs to "aut," leave the STOP button unlit and set the temperature I want and let the HVAC unit do its thing utilizing the sensor on top of the dashboard. On very hot days when the unit has the AC activated, I depress and light the RECIRCULATION button.

    "Set it and forget it."
     
    F456M likes this.
  9. 00 550

    00 550 Formula Junior

    Oct 20, 2009
    412
    FL
    Full Name:
    That guy
    #9 00 550, Apr 7, 2014
    A/C is hopeless in my 550. 1,2,3 settings barely blow. 4 is way to hard. When all is off....major heat from vents as if its engine is blowing. It's laughable. Still love my car
     
    F456M and Tarek307 like this.
  10. 15765

    15765 Formula Junior

    May 14, 2012
    302
    Las Vegas NV
    Full Name:
    Chuck King
    #10 15765, Apr 7, 2014
    It doesn't get hot in Italy, Why would Ferrari worry about it. If you live elsewhere its your problem and allways has been. I haven't had a Ferrari with decent air conditioning yet after 40 years and seven Ferraris.

    Chuck
     
  11. tazandjan

    tazandjan Three Time F1 World Champ
    Lifetime Rossa Owner

    Jul 19, 2008
    38,082
    Clarksville, Tennessee
    Full Name:
    Terry H Phillips
    #11 tazandjan, Apr 7, 2014
    Dave- Affirmative, if you want everything off in a 550, both switches in Auto and then push the off button and it will shut off the compressor, incoming air, and the fans. Otherwise the fans will run at whatever speed is set on the dial and you will still get air distributed according to the other switch setting.

    I am with you, Auto and Auto and set the temperature. On a 575M, the compressor cannot be shut off and runs whenever the outside temp is above 59 F.
     
  12. DPA360

    DPA360 Karting

    Jul 16, 2007
    109
    #12 DPA360, Apr 8, 2014
    Sounds good I will give that a shot tomorrow and see if that turns it off, I'm pretty sure I already did but will double ck and report back w findings. Tnxs again you guys are the best!
     
  13. maranello72

    maranello72 Formula Junior

    Jul 4, 2009
    348
    Munich, Germany
    Full Name:
    Stefano
    #13 maranello72, Apr 8, 2014
    There were 38 degrees celsius in Modena last year towards the end of July.
    The AC compressor on my 550 died and I drove 500km without it, when I arrived at destination (workshop) I could barely step out of the car!
    The heat wave lasted for four weeks or so....

    Stefano

    PS: my AC system is otherwise very efficient!
     
    F456M likes this.
  14. 15765

    15765 Formula Junior

    May 14, 2012
    302
    Las Vegas NV
    Full Name:
    Chuck King
    #14 15765, Apr 8, 2014
    Stefano:

    38 degrees celsius? We have that here in May, and 43 degrees celsius thru August. My 2008 Corvette Convertible keeps the inside of the car below 26 Deg celsius on the hotest days of the year and the Engine Temp never goes over 104 Deg. celsius even in City traffic, the red line for engine temp is 121 Deg. celsius. My 2000 Maranello won't keep the car comfortable inside with the outside temp above 35 Deg.

    Chuck
     
    F456M likes this.
  15. tazandjan

    tazandjan Three Time F1 World Champ
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    Jul 19, 2008
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    Clarksville, Tennessee
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    Terry H Phillips
    #15 tazandjan, Apr 8, 2014
    Chuck- A new dryer and change of refrigerant may help you. Ferrari recommends every 2 years for that service, but hardly anybody does it. My 575M has basically the same AC (same compressor at least) as your 550 and keeps her cool at 100+ F (38+C).
     
  16. 308 GTB

    308 GTB F1 World Champ
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    Barry Wolinsky
    #16 308 GTB, Apr 8, 2014
    That happens occasionally in my 944 turbo because the resistor block for the blower fan is right under the cowling by the windshield and exposed to the elements. I have to periodically clean off the corrosion on the resistor pack contacts with Würth Contact OL.



    All the time or intermittently?
     
  17. bundas

    bundas F1 Veteran
    Owner

    Dec 31, 2005
    7,090
    lexington ky usa
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    mitchell barnes
    #17 bundas, Apr 8, 2014
    shop with SD tool had to reset the computer
     
  18. DPA360

    DPA360 Karting

    Jul 16, 2007
    109
    #18 DPA360, Apr 9, 2014
    Update: tried putting both knobs to aut and pressed stop button in, air continued to blow out. When I depressed the stop button w both on aut air blew out extremely hard as if it was on 4 on control knob. I'm stuck:(
     
  19. maranello72

    maranello72 Formula Junior

    Jul 4, 2009
    348
    Munich, Germany
    Full Name:
    Stefano
    #19 maranello72, Apr 9, 2014
    OK Chuck, that's really hot! What water temperature are you getting with the 550 in slow traffic on those hottest days??
     
  20. bay

    bay Formula 3

    Mar 13, 2011
    1,224
    Belgium
    Full Name:
    Bernard
    #20 bay, Apr 9, 2014
  21. DPA360

    DPA360 Karting

    Jul 16, 2007
    109
    #21 DPA360, Apr 9, 2014
    I think you maybe right. It's an $850 part at Ricambi would hate to buy and it be something else. Going to try n locate a loaner one or try n figure out a way to test mine before purchasing one.
     
  22. bay

    bay Formula 3

    Mar 13, 2011
    1,224
    Belgium
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    Bernard
    #22 bay, Apr 10, 2014
  23. DPA360

    DPA360 Karting

    Jul 16, 2007
    109
    #23 DPA360, Apr 13, 2014
  24. bay

    bay Formula 3

    Mar 13, 2011
    1,224
    Belgium
    Full Name:
    Bernard
    #24 bay, Apr 14, 2014
    No problem , with Eurospares ;)
     
  25. henri66

    henri66 Karting

    Oct 10, 2006
    109
    Previously Maranello
    #25 henri66, Jun 22, 2014
    Hi guys (salut Bernard),

    Sounds like i have the SAME problem on my 456 MGT. Wanted to know if you tried that fix and if it has worked or not?
     
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