AC panel question | FerrariChat

AC panel question

Discussion in '308/328' started by F456M, Feb 16, 2022.

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  1. F456M

    F456M F1 Rookie

    Jan 8, 2010
    3,696
    Oslo
    Full Name:
    Erik
    Hi guys.

    Just out of curiousness. What is the story behind this labeling of the AC panel? Seems like there is one setting for highway and one for driving in town! Never seen anything like it before. Is it one setting when you get more flow of air to the condenser (high way mode), and one for less when driving sliwly in the city? I mean when driving slow you need max cooling inside you car...


    Can you tell me why it is like this? Thanks!

    Erik
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  2. spirot

    spirot F1 World Champ

    Dec 12, 2005
    15,112
    Atlanta
    Full Name:
    Tom Spiro
    The AC units in the car are not strong. If you run the AC at Max in town you will ice up the condenser.. and notice water dripping from the passenger's side footwell.

    I'm not sure why the graphics, but yes the amount of air coming in does affect the cooling of the cabin... ceramic windshield and side window tint can help a lot with keeping temps tolerable. but sadly the 308 is not a great place to be when it's hot and humid out - even in a well-running stock system.

    Tommy Cosgrove will testify - r12 and running a stock well-maintained system is best - but even then it's not great..... the AC in my 308 would work about 5% of the time .... usually I just sweated... with the top off. if you use 134 - you need to change out almost the entire system to be compatible .. and then the performance is not as good... Highway running usually can keep you coolish... but that is about it.

    Many here have tried to improve the performance of the AC but it seems to be a tough and expensive job.
     
  3. thorn

    thorn F1 Rookie
    Silver Subscribed

    Aug 7, 2012
    3,324
    Tallahassee, FL
    The AC temp knob controls the AC pressure switch; in effect, changing the duty cycle of of compressor - ie, the pressure at which the compressor will engage/disengage. (If the compressor were to NEVER shut off, the system can freeze up).
     
    F456M likes this.

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