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Thread: Air-con Issue

  1. #11
    Join Date
    May 2013
    Location
    Sydney
    Posts
    83
    Just a few points over charging is bad only because the condenser efficiency is designed to a exact charge, so on hot days there is to much vapor & it is unable to handle the change of state back to liquid, this is were the high pressure safety cuts out the compressor. On a cold day the system may work fine as the condenser is able to handle the change of state ie lower pressure with refrigerant in liquid form. Even with correct charge high pressure cut out can still happen on extreme hot weather days especially when car not moving relying on radiator fan. Car refrigerant charges are very small so it doesn't take much to over charge or much to leak so efficiency goes, all systems should be charged by refrigerant weight to system specification. Over the years compressor seals have improved but unfortunately for a rotating seal it leaks a very small amount of the product it is sealing to create the seal, this is why after a few years your car A/C can become less efficient & require the refrigerant charge serviced.
    Last edited by zRoYz; 12-01-2017 at 11:41 PM.

  2. #12
    Join Date
    Apr 2009
    Location
    Keiraville, NSW
    Posts
    909
    Servicing time or distance travelled. Above article makes a lot of sense.

  3. #13
    Join Date
    Feb 2011
    Location
    Newcastle
    Posts
    2,486
    The compressor is stuffed. Will do myself and get re-gassed at my sons work. Not paying $1200 + at Holden ...
    '06 VZ Senator 4A - 416
    '10 E3 Senator 6M - 26
    '06 VZ S2 R8 Maloo 4A - 31

  4. #14
    Join Date
    Nov 2016
    Location
    Springfield QLD
    Posts
    48
    Who diagnosed it? Holden or an Aircon specialist?

  5. #15
    Join Date
    Feb 2011
    Location
    Newcastle
    Posts
    2,486
    Holden. Condensor Fan inop - replaced Relay which got that working. Compressor wasn't pumping and through fault finding led to Compressor unit failed.

    All good now though ... nice and cool.
    '06 VZ Senator 4A - 416
    '10 E3 Senator 6M - 26
    '06 VZ S2 R8 Maloo 4A - 31







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