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Some times I've injected the refrigerant dye into a system and have come
back at a later date and scanned the system with the black light to find a
leak.
--
Moe Jones
HVAC Service Technician
Energy Equalizers Inc.
Houston, Texas
"Howard Beale" <usenet@grasslake.net> wrote in message
news:12ci7ime1qrsg50@corp.supernews.com...
> We installed a new forced-air furnace and A/C system in our house 6 years
> ago. The A/C system is Puron and until very late last summer the system
> worked great; on the last cooling day of the year (more humid than hot),
> the expansion coils iced up and the system would not cool.
>
> We had it recharged right before memorial day and I asked the service guy
> if loss of refrigerent was normal -- he said no, it's supposed to be a
> sealed system but tiny leaks seem to happen and that I shouldn't worry too
> much about it -- every 5-6 years needing a recharge is not bad considering
> the service life is probably around 20 years.
>
> The system worked well until the past couple of weeks when it seems to
> have trouble keeping up with very hot days (>90F) and two days ago when it
> iced up again, which leads me to believe the 5-6 year leak has become a 2
> month leak I need to have more permanently fixed.
>
> What's the industry best practice for solving these leaks? Is the supply
> line itself a culprit or is it typically just the solder joints at the
> expansion coil or the coil itself? Is it a soap-and-water mission over
> all the joints, or is there some high-tech tool to check for pressure
> losses?
>
> What I would like to avoid is a knee-jerk fix (like ripping apart sheet metal
> to replace the coil when it doesn't need it).
>
> The thing I am most worried about is a leak in the line itself, since most
> of it is soffited in an area of the basement that's been remodeled (a year
> after the install, so likely not a source of a puncture).
>
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Re: Best service strategy for leaking Puron A/C system?
