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6 yo lennox leaking freon

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6 yo lennox leaking freon Muffy Links 05-27-2007
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Posted by Muffy Links on May 27, 2007, 5:58 pm
Had a new lennox high eff ac installed 6 years ago. Had it serviced this
year to clean the A coil. Week later the unit is out of freon. Called
themback and said it was most likely the A coil leaking although he could
not find the leak. Finally got a hold of the orig installer (diff co) and
he came over and pump it up at n/c 9 pounds of freon and a day and half
later the compressor shuts off due to low pressure (out of freon again).
Both techs cannot find the leak.

Leaking that fast should'nt it be easy to find the leak? Far fetched ?, but
could it leak on the pipe run from the compressor to the a coil somewhere
due to a crazy vibration that wore a hole in the line?

2nd tech says he soaped the a coil and used his leak detector and could not
find it leaking on the a coil.

What should I ask the tech to do to find the leak? Whats the proper
procedure?

thanks.

Mango



Posted by on May 27, 2007, 6:15 pm
On Sun, 27 May 2007 16:58:00 -0500, "Muffy Links"

>Had a new lennox high eff ac installed 6 years ago. Had it serviced this
>year to clean the A coil. Week later the unit is out of freon. Called
>themback and said it was most likely the A coil leaking although he could
>not find the leak. Finally got a hold of the orig installer (diff co) and
>he came over and pump it up at n/c 9 pounds of freon and a day and half
>later the compressor shuts off due to low pressure (out of freon again).
>Both techs cannot find the leak.
>
>Leaking that fast should'nt it be easy to find the leak? Far fetched ?, but
>could it leak on the pipe run from the compressor to the a coil somewhere
>due to a crazy vibration that wore a hole in the line?
>
>2nd tech says he soaped the a coil and used his leak detector and could not
>find it leaking on the a coil.
>
>What should I ask the tech to do to find the leak? Whats the proper
>procedure?

        CAll his boss, ask for a COMPETENT tech this time. Specify
that it be a DIFFERENT guy. 9 lbs overnight is a HUGE leak.

>
>thanks.
>
>Mango
>

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Posted by Luca on May 27, 2007, 6:16 pm
Call a different company, 9 lbs in two days is a pretty good leak.
Could be leaking in the line set.


> Had a new lennox high eff ac installed 6 years ago. Had it serviced this
> year to clean the A coil. Week later the unit is out of freon. Called
> themback and said it was most likely the A coil leaking although he could
> not find the leak. Finally got a hold of the orig installer (diff co) and
> he came over and pump it up at n/c 9 pounds of freon and a day and half
> later the compressor shuts off due to low pressure (out of freon again).
> Both techs cannot find the leak.
>
> Leaking that fast should'nt it be easy to find the leak? Far fetched ?,
> but could it leak on the pipe run from the compressor to the a coil
> somewhere due to a crazy vibration that wore a hole in the line?
>
> 2nd tech says he soaped the a coil and used his leak detector and could
> not find it leaking on the a coil.
>
> What should I ask the tech to do to find the leak? Whats the proper
> procedure?
>
> thanks.
>
> Mango
>



Posted by Puddin' Man on May 27, 2007, 6:37 pm

>Had a new lennox high eff ac installed 6 years ago. Had it serviced this
>year to clean the A coil. Week later the unit is out of freon. Called
>themback and said it was most likely the A coil leaking although he could
>not find the leak. Finally got a hold of the orig installer (diff co) and
>he came over and pump it up at n/c 9 pounds of freon and a day and half
>later the compressor shuts off due to low pressure (out of freon again).
>Both techs cannot find the leak.
>
>Leaking that fast should'nt it be easy to find the leak? Far fetched ?, but
>could it leak on the pipe run from the compressor to the a coil somewhere
>due to a crazy vibration that wore a hole in the line?

They didn't check the hi-side line/connections for a leak?

>2nd tech says he soaped the a coil and used his leak detector and could not
>find it leaking on the a coil.

He did this right after adding 9 lbs?

>What should I ask the tech to do to find the leak? Whats the proper
>procedure?

I guess you could call back, ask for their most experienced
(certified) tech. Might wanna stop by the shop, talk to the
svc. mngr. firsthand, see if -he- looks competent.

They rarely check everywhere. I had a nasty leak back in '94,
nobody could find it. Finally a friend found the leak in
the condensing coil: my male dog had been sneaking around,
pissing on it (presumably) for about 10 years. Had to replace
the coil. I now have only female dawgs. :-)

Good Luck,
Puddin'

"Mit der Dummheit kaempfen Goetter selbst vergebens!"
-Friedrich Schiller

Posted by Muffy Links on May 27, 2007, 7:50 pm


> Had a new lennox high eff ac installed 6 years ago. Had it serviced this
> year to clean the A coil. Week later the unit is out of freon. Called
> themback and said it was most likely the A coil leaking although he could
> not find the leak. Finally got a hold of the orig installer (diff co) and
> he came over and pump it up at n/c 9 pounds of freon and a day and half
> later the compressor shuts off due to low pressure (out of freon again).
> Both techs cannot find the leak.
>
> Leaking that fast should'nt it be easy to find the leak? Far fetched ?,
> but could it leak on the pipe run from the compressor to the a coil
> somewhere due to a crazy vibration that wore a hole in the line?
>
> 2nd tech says he soaped the a coil and used his leak detector and could
> not find it leaking on the a coil.
>
> What should I ask the tech to do to find the leak? Whats the proper
> procedure?
>
> thanks.
>
> Mango

As a followup, I went down stairs and traced the line coming out of the
furnace back to the compressor and I notice some oily residue about two feet
in under a finished room. I also noticed that the clip holding the line to
the floor joists rusty. Would a leak of that size leave an oily residue?

thanks for everyone's help btw.
Muffy

>



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