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  1. #1
    Join Date
    May 2010
    Posts
    12

    Help with R22 central air

    I went to help a friend today with a 2.5 ton Heir condenser. He tried to charge it, but had problems. I put my guages on it,turned it on and the High side spiked to 500 psi! It dropped alittle but still stayed above 350 psi while running. The suction side was 120 psi. I shut it down quickly. I have never seen pressures this high on a R22 system, not sure what could cause this. The compressor was also making sort of a "whining" sound..Any suggestions,remedies, would be great.

  2. #2
    Join Date
    Dec 2002
    Location
    Arizona
    Posts
    4,411
    Sounds like its under charged! NOOOOO just kidding, please call someone that knows what there doing before someone gets hurt or does damage to your system.
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  3. #3
    Join Date
    Apr 2011
    Location
    West of DFW
    Posts
    240
    Why was the original condenser replaced. Was it replaced?

  4. #4
    Join Date
    Jun 2006
    Location
    SW MO.
    Posts
    5,212
    Get pro membership to get answers.
    Discipline your child so that other parents don't have to.

    We're awl pawthetic and kweepy and can't get giwrls. That's why we fight wobots.

  5. #5
    Join Date
    Jan 2009
    Location
    Fairfield county Connecticuit
    Posts
    778
    What he charge it with r410A EZ answer go pro

  6. #6
    Join Date
    May 2010
    Posts
    12
    It is original, about 10 years old. I was going to reclaim tomarrow and charge it from scratch. I have never seen pressures that high in a R22 system, I was wondering if anyone else had.

  7. #7
    Join Date
    Jan 2009
    Location
    Fairfield county Connecticuit
    Posts
    778
    Dude if you don't know what is wrong right now with the info you gave us very simple you don't know what your doing you should call somebody who does you can hurt yourself or the unit

  8. #8
    Join Date
    Jun 2006
    Location
    SW MO.
    Posts
    5,212
    I had a unit that had been off for more than a day, put my gauges on without it running and both sides read over 400psi. Old R22 unit. Bent my low side manifold. Wasn't over charged. Wasn't even running. Go fig.
    Discipline your child so that other parents don't have to.

    We're awl pawthetic and kweepy and can't get giwrls. That's why we fight wobots.

  9. #9
    Join Date
    Mar 2005
    Location
    Houston, Texas
    Posts
    11,873
    Quote Originally Posted by cr2banger View Post
    It is original, about 10 years old. I was going to reclaim tomarrow and charge it from scratch. I have never seen pressures that high in a R22 system, I was wondering if anyone else had.
    Why not try pumping it down before doing that?

  10. #10
    Join Date
    Jan 2009
    Location
    Fairfield county Connecticuit
    Posts
    778
    Quote Originally Posted by chaard View Post
    I had a unit that had been off for more than a day, put my gauges on without it running and both sides read over 400psi. Old R22 unit. Bent my low side manifold. Wasn't over charged. Wasn't even running. Go fig.
    Nitro in it

  11. #11
    Join Date
    Jul 2008
    Location
    Denver, CO
    Posts
    4,229
    You need a recovery unit and vacuum pump to fix this problem.

  12. #12
    Join Date
    Jan 2009
    Location
    Fairfield county Connecticuit
    Posts
    778
    I think just a recovery cylinder

  13. #13
    Join Date
    May 2010
    Posts
    12
    I do not know everything there is to know..for sure. That is why I posted. The only information I gathered was running pressures. The superheat was virtually noexistant. I had 120psi suction. So it was a superheat of 15-20 in a very small sample space. The suction line never got cold to the touch.Once the compressor was making a terrible sound I pulled the disconect, with respect to the 350-500 psi high side pressures I saw. Seemed logical at the time. As I said, I have never in my 15 years in the field seen R22 pressures that high, It is not common. Maybe some one else has.

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