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  1. #1
    Join Date
    Aug 2009
    Posts
    4
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    How do you know if valves are leaking on compressor?

    I have an older Lennox 5 ton A/C. For the last few years, I've had to replace the refrigerant about 2-3 times per year-leak in coils. It has always worked. Most recently, it was replaced, but now the A/C only cools at night. Somebody explained to me that this is because the valves on the compressor are leaking and not allowing enough refrigerant to circulate-that instead its mostly staying w/n the compressor. Does this make sense? Also, I was told that even though its an older unit, the most likely cause is that too much refrigerant was put last time and caused a leak in the valves (or the seals?). Does that make sense??

  2. #2
    Join Date
    Jul 2009
    Location
    Houston,TX
    Posts
    25
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    Can't help you on checking the compressor. Are you sure the leak is in the coils? One time after I found a leak at the filter-drier connection the homeowner told me the last guy said the condenser coils had a leak a would need to replace entire unit. I think the money spent to add refrigerant 2-3 times a year for the last few years is money down the drain. Better to get the leak fixed even if it means buying a new unit.

  3. #3
    Join Date
    Jan 2004
    Location
    PA
    Posts
    69,589
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    Overcharging can cause damage.

    But, we don't know if it was overcharged.
    Contractor locator map

    How-to-apply-for-Professional

    How many times must one fix something before it is fixed?

  4. #4
    Join Date
    Sep 2008
    Location
    golden horseshoe
    Posts
    16
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    illegal top ups

  5. #5
    Join Date
    Sep 2002
    Location
    I don't know
    Posts
    2,927
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    Provided that nothing else is wrong with the system, high suction line and low liquid line pressure indicates that the compressor isn't functioning efficiently.
    I've discovered a natural law - everything gets progressively worse. Things only break down and become depleted. Life isn't worth living and everything is going to hell.

    Death is the messiah. Everything else is irrelevant and arbitrary.

  6. #6
    Join Date
    Sep 2002
    Location
    I don't know
    Posts
    2,927
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    Quote Originally Posted by James G View Post
    illegal top ups
    As far as I know it's legal (but not right) to top up small systems.
    I've discovered a natural law - everything gets progressively worse. Things only break down and become depleted. Life isn't worth living and everything is going to hell.

    Death is the messiah. Everything else is irrelevant and arbitrary.

  7. #7
    Join Date
    Jan 2004
    Location
    PA
    Posts
    69,589
    Post Likes
    Quote Originally Posted by James G View Post
    illegal top ups

    Whats an illegal top up?????
    Contractor locator map

    How-to-apply-for-Professional

    How many times must one fix something before it is fixed?

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