360 - Air conditioner on my 360 Modena | FerrariChat
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360 Air conditioner on my 360 Modena

Discussion in '360/430' started by Madmag, Oct 6, 2024.

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  1. Madmag

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    Oscar franjul
    #1 Madmag, Oct 6, 2024
    Hi , I wanna know if some one have the same problem. The air conditioner of the car start some time and some times no when he wants some one says to me that is the blower box in the dash . Some body can help me? Thanx
     
  2. Qavion

    Qavion F1 World Champ
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    #2 Qavion, Oct 6, 2024
    Is the blower fan not working? Or is the blower fan working, but the airconditioning not cooling?
     
  3. Madmag

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    #3 Madmag, Oct 6, 2024
    Is cooking fine when it’s start work for minutes and turn off .
     
  4. Qavion

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    #4 Qavion, Oct 6, 2024
    I'm having trouble understanding what you are saying, but if you only have a blower fan issue....

    The blower fan is powered by the same fuse as the HVAC ECU, so if the rest of the HVAC system is operating normally, then the problem could be the fan itself or the fan speed controller on the right hand side of the airconditioning unit (in the passenger footwell).

    The fan speed controller is circled in RED

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    To help with diagnosis, you could short out this plug.
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    This procedure bypasses the fan speed control unit (giving maximum fan speed at all times)

    If the fan operates for more than a few minutes, you have a fan speed controller issue or some other problem. If the fan speed controller is broken, you may have problems finding a new one. Sometimes they can be repaired/improved.
     
  5. Madmag

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    #5 Madmag, Oct 6, 2024

    I will check tomorrow that’s the electro blower regulator.
     
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  6. Madmag

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    #6 Madmag, Oct 8, 2024
    When I disconnect this plug the air turn off
     
  7. vrsurgeon

    vrsurgeon F1 World Champ
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    #7 vrsurgeon, Oct 8, 2024
    I'll bet the AC control unit (black box on the driver footwell) is toast. Mine did a similar thing.
     
  8. Madmag

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    #8 Madmag, Oct 8, 2024
    This box?
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  9. vrsurgeon

    vrsurgeon F1 World Champ
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    #9 vrsurgeon, Oct 8, 2024
  10. Madmag

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    #10 Madmag, Oct 8, 2024

    But if this box doesn’t work the blower can’t turn on or not ?
     
  11. Qavion

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    #11 Qavion, Oct 8, 2024
    Last edited: Oct 8, 2024
    When you disconnect the plug (only), the blower fan should turn off. However, if you short (jumper) the electrical pins (as shown in my last message), the fan should go to maximum speed.

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    With the blue and black wires shorted, leave the fan running to see if it fails (after a few minutes).

    NB: Short the wires on the wiring harness, not the wires on the fan controller.

    If the fan stops running after a few minutes with the jumper fitted, the blower fan is faulty. If it stops running with the jumper fitted, the ECU and fan controller should be ok.
     

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