V70 Climate Control

Discussion in 'Volvo V70' started by Richard Cole, Apr 12, 2007.

  1. Richard Cole

    Richard Cole Guest

    Hi

    During the warm spell (in the UK) over Easter, my 1998 V70 climate control
    wasn't blowing refrigerated air, only (what felt like) outside air
    temperature, even after the car had been standing in the sun for quite a
    while.

    The AC was re-gassed (with Oil and Dye) last October.

    Where should I be looking for problems?

    Thanks

    Richard
    Web pages: http://www.caravanningnow.co.uk/ for caravanning,
    http://www.rcole.org/ for my personal web site and
    http://www.homeindorset.co.uk because I love the email address.
     
    Richard Cole, Apr 12, 2007
    #1
  2. Richard Cole

    Roadie Guest

    If it had to be regassed in October I would be looking for a leak
    around seals and connections. Since it was dyed I would let the shop
    do the looking.
     
    Roadie, Apr 13, 2007
    #2
  3. Richard Cole

    Richard Cole Guest

    Roadie,

    Thanks for replying. I went back to the AC people this afternoon and the
    Gas levels are fine and their is no sign of leaks.

    When they tested the compressor, they found that there was no electricity
    getting to it (they tested all of the fuses and the were ok), so my next
    stop is to get the OBD read to see if anything is recorded there, as they
    seem to think it is a control board (The temperature maintains itself well
    when the outside is cold, so that would rule out the temperature sensor).

    Thanks

    Richard
    Web pages: http://www.caravanningnow.co.uk/ for caravanning,
    http://www.rcole.org/ for my personal web site and
    http://www.homeindorset.co.uk because I love the email address.
     
    Richard Cole, Apr 13, 2007
    #3
  4. Richard Cole

    Roadie Guest

    Also check the AC on/off switch.
     
    Roadie, Apr 13, 2007
    #4
  5. Richard Cole

    Tim.. Guest


    Bear in mind that the a/c clutch is under control of the ECU, via the ECC.
    If for some reason parameters are not 'just-so' the ECU will not fire up the
    compressor no matter what the ECC is saying.

    Tim.
     
    Tim.., Apr 13, 2007
    #5
  6. Richard Cole

    Richard Cole Guest

    Tim.

    Thanks.

    There were 2 errors in the ECU, a Low Pressure warning from the A/C and a
    Knock detector error.

    When the Low Pressure error was forced clear, the A/C started within a few
    seconds. The Knock detector error would not clear, so that's another
    problem for another day.

    Thanks to Tim and Roadie for the advice.

    Richard
    Web pages: http://www.caravanningnow.co.uk/ for caravanning,
    http://www.rcole.org/ for my personal web site and
    http://www.homeindorset.co.uk because I love the email address.
     
    Richard Cole, Apr 19, 2007
    #6
  7. Richard Cole

    Roadie Guest

    Good detective work & glad you figured it out. I will file that away.
     
    Roadie, Apr 19, 2007
    #7
  8. Richard Cole

    Richard Cole Guest

    Not my work. The diagnostic tool my (non-Volvo) dealer had sorted it all
    out (once they looked under Engine Control Unit rather than AC Control).

    Thanks

    Richard
    Web pages: http://www.caravanningnow.co.uk/ for caravanning,
    http://www.rcole.org/ for my personal web site and
    http://www.homeindorset.co.uk because I love the email address.
     
    Richard Cole, Apr 20, 2007
    #8
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