355 - The End? Evaporator Unit #63307220 | FerrariChat
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355 The End? Evaporator Unit #63307220

Discussion in '348/355' started by watkinsgt, Feb 9, 2022.

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  1. watkinsgt

    watkinsgt Karting

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    #1 watkinsgt, Feb 9, 2022
    I've owned my '99 355 Spyder from new and loved it dearly for all it's well known attributes. Yes it's been like exploring the jungle using your checkbook as a flashlight but problems have always found a solution - until now. The dealer says my 'evaporator unit and passenger compartment aeration' unit is shot (part #63307200) and it's not repairable and there aren't anymore anywhere new or used - period. Guys is this right? Am I at The End?
     
    INRange likes this.
  2. PaulK

    PaulK F1 Rookie
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    #2 PaulK, Feb 9, 2022
    Sounds like you need to find a used one. Have you tried ferrparts.com?
     
  3. EastMemphis

    EastMemphis Formula 3
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    #3 EastMemphis, Feb 9, 2022
    It may be time to find a good indie in your area and get a second opinion.
     
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  4. Targatime

    Targatime Formula 3

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    #4 Targatime, Feb 9, 2022
    Wonderfully put
     
  5. asgor

    asgor Formula Junior

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    #5 asgor, Feb 9, 2022
    I think you'll find this thread to be useful: https://www.ferrarichat.com/forum/threads/348-fan-power-supply-module.494608/
    ...especially the part that mentions how this same unit was used on the Alfa Romeo 155. Knowing this should open up a whole new window for you into used Alfa Romeo parts where you will hopefully find what you need.

    Lastly, the way I see it, ANYTHING can be fixed. Use the services a a specialized electrical shop or whatever, find what is broken and either fix it or replace the faulty component.
     
    jimmym likes this.
  6. Tridentecavallino

    Tridentecavallino Karting

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    #6 Tridentecavallino, Feb 9, 2022
    Are you sure about the part number? 63307200 refers the power transistor for the heater fan. The description "evaporator unit and passenger compartment aeration" is a bit confusing for 63307200.
     
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  7. Qavion

    Qavion F1 World Champ
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    #7 Qavion, Feb 9, 2022
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  8. Qavion

    Qavion F1 World Champ
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    #8 Qavion, Feb 9, 2022
    There will be certain parts of the evaporator unit/blower fan assembly which will not be repairable, but the blower fan regulator/resistor may be repairable (up to a point).

    https://www.ferrarichat.com/forum/posts/145915271/

    Miro was working on this issue
     
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  9. watkinsgt

    watkinsgt Karting

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    #9 watkinsgt, Feb 9, 2022
    Thanks for all the helpful replies and corrections. You're right - it's only the power transistor for the heater fan #63307200 that is shot. I will search the Alpha Romeo 155 interchangeable angle and try 'ferrparts', Many thanks.
     
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  10. Qavion

    Qavion F1 World Champ
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    #10 Qavion, Feb 9, 2022
  11. watkinsgt

    watkinsgt Karting

    Feb 4, 2008
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    #11 watkinsgt, Mar 12, 2022
    Happy ending. To recap: My 355 HVAC fan would not run. Dealer said 'Power Module part # 63307200' was shot. Part is NLA. I searched everywhere. No luck. No one in my town would attempt to fix it. Then stumbled across FRANCORCHAMPS OF AMERICA Ferrari repair in Costa Mesa CA. Called and spoke with Rod. He said he could fix it - that it would take two weeks and cost $1500. I said 'great' and had dealer send him the offending part. Two weeks later Francorchamps sent repaired part to dealer who installed it. Everything works. Hurrah! Bill was only $522 instead of $1500. Even better. Hit the wall? Give Rod a call. 949-631-6373.
     
    jimmym, willrace, Qavion and 2 others like this.
  12. WATSON

    WATSON Two Time F1 World Champ
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    #12 WATSON, Sep 7, 2022
    Is there a way to test the 63307200?

    My fans run only on low and I have no response from the HVAC panel for air diverter, recirc or AC engagement.

    I think the 63307200 is just for the fan speed....and it sure seems to run hot.
     
  13. Qavion

    Qavion F1 World Champ
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    #13 Qavion, Sep 7, 2022
    Miro has posted some instructions on this, but you'll need to fabricate some jumper wires, etc:

    https://www.ferrarichat.com/forum/posts/148645320/

    Given the number of different problems you mentioned in PM (such as AC/recirc flap/air direction flap/fan speeds/etc) , it may be a good idea just to send your ECU off to the specialists. You could do basic fuse or power checks at the ECU and control panel. There is a weird combination of fuses powering these items. According to the wiring diagrams, there is even an input from frunk fuse 12 to the ECU (Fuse 12 is only powered when the sidelights are on). That makes no sense at all.
     
  14. m.stojanovic

    m.stojanovic F1 Rookie
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    #14 m.stojanovic, Sep 8, 2022
    Yes, the fan speed controller (63307200) does get rather hot and this is why its fins are placed inside the air stream for cooling. If tested while detached from the heater box, it should be kept on for only a short period of time.

    Otherwise, if your blower fan is running at certain low speed, there is most likely no problem with the fan speed controller but it could be in the AC ECU.
     
  15. WATSON

    WATSON Two Time F1 World Champ
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    #15 WATSON, Sep 8, 2022
    The ECU has been repaired.

    I have a second HVAC control panel courtesy of Dave. It doesn't matter which panel I use.

    It's as if the whole HVAC system is not getting power.
     
  16. WATSON

    WATSON Two Time F1 World Champ
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    #16 WATSON, Sep 8, 2022
    Oddly, I do not have a pin #4. Just a hole.

    [​IMG]
     
  17. WATSON

    WATSON Two Time F1 World Champ
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    #17 WATSON, Sep 8, 2022
    Last edited: Sep 8, 2022
    What fuse operates the HVAC control panel? Footwell #24?

    BTW, I jumpered wire #2 and #3 and blower went to full speed.
     
  18. Qavion

    Qavion F1 World Champ
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    #18 Qavion, Sep 8, 2022
    Last edited: Sep 8, 2022
    On the 5.2 car, fuse 26.

    Fuse 24 powers the ECU…. and, according to the diagrams, fuse 12.
     
  19. WATSON

    WATSON Two Time F1 World Champ
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    #19 WATSON, Sep 8, 2022
    My manual says fuse 26 powers the windscreen wiper and brake lights
     
  20. Qavion

    Qavion F1 World Champ
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    #20 Qavion, Sep 8, 2022
    Wiring diagram here:

    https://www.dropbox.com/t/HYZQLMTCiHQbYpHv

    There are a few fuses with undocumented connections. e.g.
    OBD2 port, luggage compartment light, spider roof control (ignition power), etc...
     
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  21. WATSON

    WATSON Two Time F1 World Champ
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    #21 WATSON, Sep 8, 2022
    So in that diagram it lists fuse 26 as wipers and brake lights.

    Fuse 24 as Air Con system.
     
  22. Qavion

    Qavion F1 World Champ
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    #22 Qavion, Sep 8, 2022
    I think you've found your problem. Is it an OEM fan regulator?

    Image Unavailable, Please Login

    Follow the blue/black (LN) wire from pin 3 to splice 30046 and then to the fuse/relay panel.

    Are your brake lights working?
     
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  23. Qavion

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    #23 Qavion, Sep 8, 2022
  24. Qavion

    Qavion F1 World Champ
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    #24 Qavion, Sep 8, 2022
  25. m.stojanovic

    m.stojanovic F1 Rookie
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    #25 m.stojanovic, Sep 8, 2022
    Some controllers have the pin 4 and some don't. Even when present, this pin is not connected to anything inside the controller (just a "dummy").
     
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