Volvo V70 Air Con

Discussion in 'Volvo V70' started by caroline, Jun 18, 2007.

  1. caroline

    caroline Guest

    Why does my air con kick in when the car is locked and the keys out.
    Its started to happen when I have been in bed.
    caroline, Jun 18, 2007
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  2. caroline

    James Sweet Guest

    The air conditioning can't work unless the engine is running, the engine
    drives the compressor. Is it the cooling fan you hear running?
    James Sweet, Jun 18, 2007
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  3. caroline

    Allen Guest

    The blower runs for a period of time after the engine is shut off to dry out
    the condensation from the air-conditioner. This is to keep the car from
    smelling musty. Our S80 does it also, it is a normal event.

    Allen, Jun 19, 2007
  4. caroline

    Roger Mills Guest

    In an earlier contribution to this discussion,
    The aircon compressor *cannot* run when everything is turned off because it
    is engine driven.

    What you are hearing is an electric fan - probably the radiator fan which is
    driven by a thermostat and can run after the engine has stopped, and may not
    start immediately the engine is switch off - there may be a delay of a
    minute or two. [Not long enough to have gone to bed, I would have thought!]

    What is the time interval between stopping the car and hearing what you
    believe to be the aircon? Presumably it doesn't suddenly start a long time -
    like several hours - after the car was last used?
    Email address maintained for newsgroup use only, and not regularly
    monitored.. Messages sent to it may not be read for several weeks.
    Roger Mills, Jun 19, 2007
  5. caroline

    Roadie Guest

    Allen has it right. The air conditioning system extracts a lot of
    moisture from the incoming air and that moisture is just drained onto
    the ground as the car is operated. When the engine is shut off there
    is still a considerable amount of moisture retained in the AC system.
    Although much of it eventually drains out, some of it emains behind as
    a perfect environment for mildew to grow. The car computer is set to
    run the AC blower for about 5 minutes after the engine has been off
    for an hour to extract the remaining moisture.

    It works.
    Roadie, Jun 19, 2007
  6. caroline

    Nick Guest

    Damn clever, these Nips... damn clever, I say !

    Nick, Jun 19, 2007
  7. caroline

    c.fiedler Guest

    Well, since this is and since volvos are primarily
    made in Sweden, I fail to see what "Nips" have to do with the
    discussion. Apparently you're one of those who cross posts to numerous
    news groups in the hope that someone will care about your pitiful
    c.fiedler, Jun 19, 2007
  8. caroline

    Roadie Guest

    My my, you have managed post wrong information with a xenophobic slur
    in an incomplete sentence. Congratulations. Please don't try to top
    it with another performance..
    Roadie, Jun 19, 2007
  9. caroline

    caroline Guest

    I don't think my a/c is actually working correctly, not blowing cold all the
    If it is not and there is a build up of moisture would this cause the
    compressor to kick in.
    Is there a sensor that senses moisture so if I have excess moisture due to
    a problem with the a/c this is why the compressor is kicking in.
    caroline, Jun 20, 2007
  10. caroline

    Roadie Guest

    From the perspective of the driver the AC is temperature driven. Once
    you push the On button it attempts to reach the temperature set by
    you. The extraction of moisture from the air is a helpful result of
    passing warm damp air over much colder coils in the AC unit. If it
    doesn't blow cool air while stuck in heavy traffic but works ok while
    moving down the road, try pressing the recirculate button to bring
    more inside air through the AC. If it isn't cooling all the time it
    could be due to the unit being low on refrigerant.
    Roadie, Jun 20, 2007
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