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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
    74,378
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    Overcharging can cause damage.

    But, we don't know if it was overcharged.
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    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
    3,018
    Post Likes
    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.

  6. #6
    Join Date
    Sep 2002
    Location
    I don't know
    Posts
    3,018
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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.

  7. #7
    Join Date
    Jan 2004
    Location
    PA
    Posts
    74,378
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    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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