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-   -   What causes high pressure in ac system (https://www.askmehelpdesk.com/showthread.php?t=434493)

  • Jan 12, 2010, 09:53 AM
    bh7558
    What causes high pressure in ac system
    King Air 200 C12D Model / PT-6 / 41 Engines.
    A/C running, Pressure's Perfect @ 195 over 32. Oat is 95 degrees.
    The High pressures lines will burn you, they are around 190 degrees.

    WHAT IS THE PROBLEM!!
  • Jan 12, 2010, 10:00 AM
    wmproop
    Since you have decided that the pressure is perfect,, have you cleaned everything,, the out side coils, the evap coils, the filter?, the high pressure line shoul get pretty warm, what is the temp. of the air at supply vents?

    Where you live,, its 18 degrees where I live,, lol,, no need ac
  • Jan 12, 2010, 10:06 AM
    bh7558

    I have changed every thing including the condenser, I am in africa, it is 90 now, the high press lines are suposto bet warm, but you can not hold these lines they will burn you.
  • Jan 12, 2010, 11:54 AM
    wmproop
    What is the low pressure /bigger line doing? Is it cold? Is it sweating? What I the temp. of the supply air? After it goes over the evap. Coil
  • Jan 12, 2010, 12:02 PM
    hvac1000
    It is not condensing properly and the cause is partially noncondensibles in the system. You cannot cool with HOT GAS it has to be a liquid. You really need to obtain a manual for that exact unit and then jump it through the hoops.
  • Jan 12, 2010, 12:06 PM
    bh7558
    What causes high pressure in ac system
    King Air 200 C12D Model / PT-6 / 41 Engines.
    A/C running, Pressure's Perfect @ 195 over 32. Oat is 95 degrees.
    The High pressures lines will burn you, they are around 190 degrees.

    WHAT IS THE PROBLEM!!

    Post no elmail
  • Jan 12, 2010, 12:21 PM
    bh7558
    Look people, every thing is perfect except the high pressure being hot as hell, read the initial question, if you don't know then you don't know, no need to ask a lot of questions. I just want a answer
  • Jan 12, 2010, 12:23 PM
    bh7558

    Hey, heating and airconditioning expert,
    Your full of
  • Jan 12, 2010, 12:28 PM
    bh7558
    Yes, I have replaced every thing 2 times, 2 fwd evaps, 2 aft evafs, expansion valves 2 times, hot gas bypass valve, high and low press switches, receiverdryer 6 times, blowers, so don't give me any of this horse crap, its cooling about 45 degrees coming in the cabin, and its 95 outside. so don't talk with your head up your because your looking stupid
  • Jan 12, 2010, 12:51 PM
    hvac1000
    I just find it very funny that you stated you have replaced everything 2 times and you still cannot get it to work. LOL It seems that if you try to replace everything 3 times it still will not perform as you wish. You never mentioned your TD before. Let's see 95 out and 45 in wow that is a 50 degree TD. Now you really have to ask your self how stupid you feel now. O and by the way if you let it run the inside temperature will continue to drop till it hits the limitation of the control or the capacity of the unit if you are lucky. LOL I always find it amusing when a person such as yourself calls anyone stupid since an intelligent person would have already figure this out a long time ago before replacing everything twice. Must have been a real expensive experience. Now go to the bar and have an African beer and tell all your buddies what a great guy I am.

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